The Kynix Components

I. 74HC164 Introduction74HC164 adopts DIP-14, SO-14, SSOP-14  and TSSOP  -14 package pin configuration. It is complementary to MOS 8-bit serial input and parallel output unidirectional shift register, the logic symbol is shown in figure 1. The power supply voltage is 2～6V. In figure 1, A and B are the serial code input terminals; CLR  is the clear input terminal; CLK  is the clock pulse input terminal. With the arrival of the rising edge of the clock pulse, the state of phase A, phase B, and the subsequent phase shifts from QA to QH in turn.CatalogI. 74HC164 IntroductionII. 74HC164 Logic SymbolIII. Circuit DesignIV. How to Check and Repair the CircuitFAQOrdering & QuantityII. 74HC164 Logic SymbolFigure 1 74HC164 Logic SymbolIII. Circuit DesignFigure 2 is an instrument circuit composed of serial input and parallel output digital integrated circuits. T2-T5, C5, and resistance together form a turn signal flashing oscillation circuit. When the DR (connected to the turn switch) in J8 is disconnected, this circuit will not work and the turn signal will not flash; when DR is on, the oscillation circuit starts to work, the turn signal starts to flash.Figure 2 Meter circuit diagramDR is a three-position switch, one pole is connected to the left turn signal.  One pole is connected to the right turn signal, one pole is suspended in the air, and the other end of the pole hits the ground. The switch-off circuit is composed of Tl, DLRll, and R12. A switch-type Hall element is installed in the front and rear brakes of the electric bicycle. When the switch is switched, the Hall element outputs a low potential, that is, the BRK terminal in the plug J2 is grounded, Tl is turned on, and there is a voltage of nearly 5V on the collector of Tl. This voltage is sent to the controller through the BRK terminal in J2, and the power supply circuit of the motor is turned off. The motor stops working and acts as a brake. On the contrary, when the brake is not pinched, the Hall element outputs a high potential, Tl is cut off, and the motor runs normally. Because 74HC164 is an 8-bit serial input and a parallel output shift register.  it forms a movement mode and battery power display circuit with light-emitting diodes. 74HC164's output pin 13, pin 11, and D5-D7 form the side of the sports mode display circuit, and pins 6 and 10 and D8-D12 form the battery power display circuit. The display signal from the controller is sent to the serial input terminals 1 and 2 of the 74HC164  through the DATA terminal in the J2, and then shifted by the internal circuit, the driving signal is output from the relevant output terminal to light up the corresponding light-emitting diode,  so as to complete the control of the display circuit.IV. How to Check and Repair the CircuitThis circuit is relatively simple and easy to repair. The main basis for repairing is to judge the quality of 74HC164. First, check whether the +5V voltage is normal, and then check whether the voltage at pin ③ of the 74HC164's clock signal input is close to +5V. If it is lower than +5V, and after disconnecting R73, the CLK terminal voltage of J2 is normal, and the 74HC164 is damaged. If the voltage of the CLK  port is abnormal, the fault is in the controller. Next, measure whether the voltage of the serial input terminals ①and ② changes during the transition of the motion mode. If not, the fault is in the controller; if there is, the 74HC164 is damaged. From the actual repair situation, most of the 74HC164 failures are caused by damage to the internal circuit of the ⑩ pin (power supply terminal). In addition, when purchasing 74HC164.  You can first measure the resistance of the ⑩ pin. The resistance value should be about 4kD in the positive test and infinite in the reverse test.FAQHow does the 74HC164 transmit data in the microcontroller circuit?One pin of the single-chip microcomputer is like a faucet, and the data is sent one by one, that is, like the water from the faucet, dripping drop by drop. The 74H164 is like a small bowl receiving water. It is just full after receiving 8 drops of water. At this time, it is sent to the digital tube.The single-chip microcomputer must send an 8-bit (or more) data, if it is sent at the same time, it is a parallel transmission, if it is a bit by bit, it is a serial transmission. The data of the single-chip microcomputer is sent to the 74HC164 bit by bit, which is serial, and the 74HC164 sends the data to the digital tube at once, which is parallel. So 74HC164 plays a role from serial transmissionto paralleltransmission.What is the difference between 74HC164D and 74HC164N MCU?The D in 74HC164D represents a chip package. The N in 74HC164N means dual in-line plastic packaging.What is the difference between 74HC164 and 74LS164, can they be used together?74ls164 is a TTL circuit, the power supply voltage is 5V, the high-level output current Ioh is -0.4MA, and the low-level output current is 8MA.74HC164 is a CMOS circuit, the power supply voltage is 2V ~ 6V, the output drive current can reach plus or minus 20MA. If the power supply voltage you use is 5V and the output drive current is suitable for 74ls164, they can be used together.What devices can 74hc164 be replaced with?74HC164 is a CMOS device with a power supply voltage of 2V-6V. It can be directly replaced by 74HCT164, 40H164. If the power supply voltage is 5V and the output drive current is small, it can also be replaced by 74164, 74LS164, 74F164, 74ALS164.Which of 74LS164 and 74HC164 has higher driving capability?74LS164 is a TTL device with a high-level driving capability of about 0.4mA and a low-level driving capability of about 8mA. 74HC164 is a CMOS device, with high-level and low-level drive capability up to 20mA. The above data comes from DATASHEET. But generally speaking, the high-level output capability of many CMOS devices is weak, smaller than TTL, and the low-level drive capability is stronger.Can 74hc164n be used to drive the digital tube?Of course, you can use the 164 chip to drive the nixie tube, which is mostly used in situations where the IO port resources are tight and the display data refresh of the nixie tube is slow. When designing the circuit, multiple 164 chips are used in cascade, no matter how many digital tubes are driven, only 2 IO ports of the single-chip microcomputer are occupied. It can be said that it is the most IO port-saving driving method, and it is still driven statically, without strobe and brightness Low phenomenon.The disadvantage is that multiple 164s are used in cascade connection, which will cause the single-chip microcomputer to send a large amount of display data (1 byte per nixie tube) at one time when refreshing the display data. During this process, the nixie tube will be all on, although the data is sent The process duration is very short, but it still affects the display effect. It is recommended to turn off the digital tube when refreshing the data.

1N4002 is a rectifier diode.The 1N4002  is a diode in a family of diodes called 1N400x. It is a series of general-purpose diodes. The diodes in this series are widely used for rectification purposes in electronic appliances, but also for other applications such as voltage blocking, voltage boosting, etc.This post will introduce you to the basic information about 1N4002 Diode Pinout, Features, Equivalents, etc.Diode Tutorial & How to build an AC to DC Power SupplyContent1N4002 Pinout1N4002 Features1N4002 Equivalent1N4002 Advantage1N4002 Application1N4002 PackageComponent DatasheetFAQ1N4002 PinoutIn total, 1N4002  rectifier diode has 2 pins. However, you need to know the functions of each pin before it can work better for you.1N4002 is the owner of a cathode (-) and an anode  (+). In the schematic symbol, the tip of the triangle with the line at the top of the triangle is the cathode. The cathode is marked by a band on the body of a diode. It allows the current to flow through only one direction, which means that the current can flow from the anode to the cathode only, and never from the cathode to the anode  – it likes a one-way valve.Pin No.Pin NameDescription1AnodeCurrent always Enters through Anode2CathodeCurrent always Exits through Cathode1N4002 FeaturesAverage Fwd Current: 1000mANon-repetitive Max Fwd Current: 30AMax Power Dissipation is: 3WPackage Type: Available in DO-41 & SMD PackagesDiode Type: Silicon Rectifier General Usage DiodeMax Repetitive Reverse Voltage is: 100 VoltsMax Storage & Operating temperature Should Be: -55 to +175 CentigradeNote: You can find complete technical details in the data sheet at the end of this page.1N4002 Equivalent1N5408, 1N4733A, 1N5822, 1N4148 ,  Zener Diodes .1N4002 Advantage1N4002 Rectifier Diode1N4002 is a single diode of the diode series called 1N400x,  It's a series of general purpose diodes.  Diodes in this series are widely used in electronic appliances for rectification purposes as well as for other purposes such as voltage blocking, voltage boosting, etc.In addition, this series of diodes is also very popular among electronic engineers, electronic students, electronic workers, and electronic hobbyists. The 1A fwd current, low cost, small package, 3 Watt power dissipation, and other specification makes it ideal for use in a wide range of electronic applications.1N4002 ApplicationPrevent the problem of reversing polarityDevice of protectionHalf wave rectifiers and full wave rectifiersCurrent flow controllersPower management:Processing of the signal1N4002 PackageThat’s all for our introduction to 1N4002 Rectifier Diode. If you find this blog useful, please bookmark our website Apogeeweb, we will provide you with electronic component blogs, industry news, tools, etc. that you are interested in. Stay tuned for our next blog…Component Datasheet1N4002 DatasheetFAQCan I use 1N4002 instead of 1N4001?The difference between a 1N4001 and 1N4002 and 1N4003 and 1N4004 and so on up to 1N4007 is just the voltage rating; they are all 1 Amp rectifiers, starting with the 1N4001 with a 50 V PIV rating, then 100 V for the 1N4002, 200V for the 1N4003 and so any of the types. Can I use 1N4007 instead of 1N4001?Yes. The 1N4007 can withstand a higher reverse voltage(Vr), 1000V vs. 50V. The 1N4007 may even be a better choice, esp. What type of diodes is the 1N4002?General purpose How many pins does 1N4002 rectifier diode have?2 pins

Product OverviewThe SJA1105 is an IEEE 802.3-compliant 5-port automotive Ethernet switch. Each of the five ports can be individually configured to operate in MII, RMII, and RGMII modes. This arrangement provides the flexibility to connect a mix of switches, microprocessors, and PHY devices such as the TJA1100 BroadR-Reach PHY from NXP Semiconductors and other commercially available Fast Ethernet and Gigabit Ethernet PHYs. This blog will introduce SJA1105 systematically from its features, pinout to its specifications, applications, also including SJA1105 datasheet and so much more. Video: How Does Ethernet Work? The Ethernet Switch Explained CatalogProduct OverviewSJA1105 FeaturesSJA1105 PinoutSJA1105 ApplicationsSJA1105 Block DiagramTypical SJA1105 Application CircuitSJA1105 SpecificationSJA1105 ManufacturerSJA1105 User Manual and DatasheetUsing WarningsSJA1105 FAQ SJA1105 Features5-port store and forward architectureEach port individually configurable for MII and RMII operation at 10 Mbit/s or100 Mbit/s and RGMII operation at 10 Mbit/s, 100 Mbit/s or 1000 Mbit/sInterface-dependent selectable I/O supply voltages; 1.2 V core voltageSmall footprint: LFBGA159 (12 mm ´ 12 mm) packageAutomotive Grade 2 ambient operating temperature: 40 C to +105 CAutomotive product qualification in accordance with AEC-Q100 Ethernet switching and AVB featuresIEEE 802.3 compliant128 kB frame buffer1024 entry MAC address learning tableAddress learning space can be configured for static and learned addresses2 kB frame length handlingIEEE 802.1Q defined tag support4096 VLANsEgress tagging/untagging on a per-VLAN basis per portQoS handling based on IEEE 802.1QPer-port priority remapping and 8 configurable egress queues per portIngress rate-limiting on a per-port and per-priority basis for Unicast/Multicast andBroadcast trafficFrame replication and retagging of trafficFrame mirroring for enhanced diagnosticsHardware support for IEEE 802.1AS and IEEE 802.1Qav for AVB traffic supportIngress and egress timestamping per portTen IEEE 802.1Qav credit-based shapers available; shapers can be freely allocated toany priority queue on a per port basisSupport for AVB SR Class A, Class B and Class C trafficIEEE 1588v2 one-step sync forwarding in hardwareIEEE 802.1X support for setting port reachability and disabling address learningBroadcast storm protectionStatistics for dropped frames and buffer load TT and TSN features (SJA1105TEL only)IEEE 802.1Qbv time-aware trafficIEEE 802.1Qci per-stream policing (pre-standard)Support for ring-based redundancy (for time-triggered traffic only)1024 deterministic Ethernet flows with per-flow based:    -Time-triggered traffic transmission    -Ingress policing and reception window check    -Active and redundant routes    -Statistics Interface featuresMII/RMII interfaces supporting all standard Ethernet PHY technologies such as (but not limited to)  Fast Ethernet (IEEE 100BASE-TX), IEEE 100BASE-T1, and optical PHYsRGMII for interfacing with Gigabit Ethernet  (1000BASE-T) PHYs (Gigabit Ethernet)MAC and PHY modes for interfacing (MII/RMII/RGMII) directly with another switch or host processorProgrammable drive strength for all interfacesSPI at up to 25 MHz for host processor access Other features25 MHz system clock input from crystal oscillator or AC-coupled single-ended clock25 MHz reference clock outputDevice reset input from host processorIEEE 1149.1 compliant JTAG interface for TAP controller access and boundary scan SJA1105 PinoutThe following figure is the diagram of SJA1105 pinout. SJA1105 Pinout SJA1105 Pin Configuration SJA1105 ApplicationsSJA1105 can be used in various automotive scenarios such as gateway applications, body domain controllers or for interconnecting multiple ECUs in a daisy chain. Audio Video Bridging (AVB) support (Ref. 3) fully leverages infotainment and advanced driver assistance systems. SJA1105 Block DiagramThe following figure shows the block diagram of SJA1105. SJA1105 Block Diagram1 SJA1105 Block Diagram2 Typical SJA1105 Application CircuitThe SJA1105 features a programmable traffic interface. Each of the five ports can be individually configured for 10 Mbit/s or 100 Mbit/s MII/RMII/RGMII, or for 1 Gbit/s RGMII operation. A typical use case is illustrated in following figure. SJA1105 Application Circuit SJA1105 SpecificationManufacturer:NXP SemiconductorsOperating Temperature-Max:105 °COperating Temperature-Min:-40 °CSupply Voltage-Nom:1.2 VTelecom IC Type:TELECOM CIRCUITTemperature Grade:INDUSTRIAL SJA1105 ManufacturerNXP Semiconductors N.V. enables secure connections for a smarter world, advancing solutions that make lives easier, better and safer. As the world leader in secure connectivity solutions for embedded applications, NXP is driving innovation in the automotive, industrial & IoT, mobile and communication infrastructure markets. SJA1105 User Manual and DatasheetYou can download this datasheet for SJA1105–Datasheet from the link given below:SJA1105 User Manual&Datasheet Using WarningsNote: Please check their parameters and pin configuration before replacing them in your circuit. SJA1105 FAQIs the sja1105 switch a Linux driver?The 5 ports of the SJA1105 switch do not have a Linux kernel driver. As such, the PHY chip (BCM5464R) attached to the 4 externally connected ports of the LS1021ATSN board (ETH2, ETH3, ETH4, ETH5) is not controlled by the Linux kernel either. What kind of ports does the NXP sja1105 switch support?The NXP SJA1105 is a family of 6 devices: These are SPI-managed automotive switches, with all ports being gigabit capable, and supporting MII/RMII/RGMII and optionally SGMII on one port. Being automotive parts, their configuration interface is geared towards set-and-forget use, with minimal dynamic interaction at runtime. How many retagging entries does sja1105 switch 1 use?SJA1105 switch 1 consumes 1 retagging entry for each VLAN on each user port towards the CPU. It also consumes 1 retagging entry for each non-pvid VLAN that it is also interested in, which is configured on any port of any neighbor switch. How does the sja1105 emulate a PHY interface?The SJA1105 emulates a PHY interface fully and generates the /J/ and /K/ symbols prior to frame preambles, which the real PHY is not expected to understand. So the PHY simply encodes the extra symbols received from the SJA1105-as-PHY onto the 100Base-Tx wire. What is an Ethernet switch used for?An Ethernet switch creates networks and uses multiple ports to communicate between devices in the LAN. Ethernet switches differ from routers, which connect networks and use only a single LAN and WAN port. A full wired and wireless corporate infrastructure provides wired connectivity and Wi-Fi for wireless connectivity.

LM337 is an adjustable negative voltage regulator IC. This blog describes LM337 pinout, circuit, equivalent, features, where and how to use this ic and other important details.CatalogLM337 DescriptionLM337 PinoutLM337 FeaturesLM337 ParameterLM337 EquivalentLM337 CircuitWhere & How to use LM337How to safely long run LM337 in a circuitLM337 ApplicationLM337 PackageComponent DatasheetLM337 DescriptionLM337 is an adjustable 3-terminal negative-voltage regulator capable of supplying in excess of –1.5A over an output voltage range of –1.2V to –37V. It requires only two external resistors to set the output voltage and one output capacitor for frequency compensation. As a negative voltage regulator IC, LM337 is complementary to LM317 positive voltage regulator. LM337 have many built in features like overheat shutdown, overcurrent shutdown, short circuit protection etc. which makes the IC damage proof in many situations. The IC will dissipate heat during operation because all the voltage difference will convert to heat and a suitable heat sink is must to use with the IC.LM337 PinoutLM337 voltage regulatorLM337 voltage regulator pinout Pin NumberPin NameDescription1AdjustThis pins adjusts the output voltage2Input Voltage (Vin)The input voltage which has to be regulated is given to this pin3Output Voltage (Vout)The regulated output voltage set by the adjust pin can be obtained from this pinLM337 FeaturesAdjustable 3-terminal Negative voltage regulatorOutput voltage can be set to range from -1.25V to -37VMaximum Output current is -1.5ADifferential Input and Output Voltage is 40V(max), recommended 15VMaximum output current when voltage difference is 15V is -2.2AOperating junction temperature is 125°CAvailable in To-220, SOT223, TO263 PackageLM337 ParameterManufacturer:Texas InstrumentsSeries:-Packaging:TubePart Status:ActiveOutput Configuration:NegativeOutput Type:AdjustableNumber of Regulators:1Voltage - Input (Max):-40VVoltage - Output (Min/Fixed):-1.2VVoltage - Output (Max):-37VVoltage Dropout (Max):-Current - Output:1.5APSRR:77dB (120Hz)Control Features:-Protection Features:Over Temperature Short CircuitOperating Temperature:0°C ~ 125°CMounting Type:Through HolePackage / Case:TO-220-3Supplier Device Package:TO-220-3Base Part Number:LM337LM337 EquivalentLT137, PB137, LM317 (Positive Variable Voltage regulator), L7915CVLM337 CircuitThe schematic below shows an adjustable negative-voltage regulator circuit based on the LM337 IC. The circuit's input voltage ranges from -3V to 40V DC, and the output voltage ranges from -1.25V to -37V.LM337 adjustable negative voltage regulator circuitWhere & How to use LM337Depending on the user's needs, the LM337 can be used as an adjustable or fixed regulator. The output can be adjusted using a resistor divider network connected to the IC's adjustment pin.  In the resistor divider network, a variable resistor can also be used to easily adjust the output voltage to the desired level. This IC can also be used as a fixed output negative voltage regulator; simply replace the variable resistor with a fixed value resistor based on the output voltage. There are a lot of online calculators that can be used to calculate the resistor value of the desired output voltage. The ic can be used in a variety of power supply and battery charger applications. The input voltage must be 2V to 3V higher than the output voltage for this IC to produce a stable output voltage.How to safely long run LM337 in a circuitTo achieve long-term stable performance with the LM337, do not apply a load greater than 1.5A or a voltage higher than 37V. Input voltage should not exceed 40V. Use a suitable heat sink with the IC and operate it at temperatures above -40 degrees Celsius and below +125 degrees Celsius at all times. The storage temperature should be higher than -60 degrees Celsius and lower than +150 degrees Celsius.LM337 ApplicationUsed for Positive voltage regulationsVariable power supplyCurrent limiting circuitsReverse polarity circuitsCommonly used in Desktop PC, DVD and other consumer productsUsed in motor control circuitsLM337 PackageComponent DatasheetLM337 DatasheetFAQWhat is LM337?The LM337 is a negative adjustable voltage regulator which can output a range of voltages from -1.5V to -38V based on the resistors R1 and R2. The resistor R2 then is the chief resistor which allows for the swings in different voltage outputs.What is the range of the voltage level of the LM337 adjusted voltage regulator?The LM337 series are adjustable 3-terminal negative voltage regulators capable of supplying in excess -1.5 A over a -1.2 to -37 V output voltage range.What is IC 337?The LM237 and LM337 are adjustable 3-terminal negative-voltage regulators capable of supplying in excess of –1.5 A over an output voltage range of –1.2 V to –37 V. They require only two external resistors to set the output voltage and one output capacitor for frequency compensation.What is LM337 used for?The LM337 serves a wide variety of applications including local, on card regulation. This device can also be used to make a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the LM337 can be used as a precision current regulator.What are specifications of LM317 and LM337?The LM237 and LM337 are adjustable 3-terminal negative-voltage regulators capable of supplying in excess of –1.5 A over an output voltage range of –1.2 V to –37 V. They require only two external resistors to set the output voltage and one output capacitor for frequency compensation. 

Product OverviewThe LF356 devices are the first monolithic JFET input operational amplifiers to incorporate well-matched, high-voltage JFETs on the same chip with standard bipolar transistors (BI-FET Technology). These amplifiers feature low input bias and offset currents/low offset voltage and offset voltage drift, coupled with offset adjust, which does not degrade drift or common-mode rejection. The devices are also designed for high slew rate, wide bandwidth, extremely fast settling time, low voltage and current noise and a low 1/f noise corner. Video: ENTENDA O SLEW RATE: 741 VERSUS LF356N! CatalogProduct OverviewLF356N FeaturesLF356N ApplicationsLF356N PinoutLF356N ReplacementLF356N CAD ModelsLF356N Schematic DiagramsLF356N Circuit DiagramLF356N Block DiagramLF356N SpecificationLF356N vs LF356N/NOPBLF356N ManufacturerLF356N DatasheetUsing WarningsFAQ LF356N FeaturesReplace Expensive Hybrid and Module FET Op AmpsRugged JFETs Allow Blow-Out Free Handling Compared With MOSFET Input DevicesExcellent for Low Noise Applications Using Either High or Low Source ImpedanceVery Low 1/f CornerOffset Adjust Does Not Degrade Drift or Common-Mode Rejection as in Most Monolithic AmplifiersNew Output Stage Allows Use of Large Capacitive Loads (5,000 pF) Without Stability ProblemsInternal Compensation and Large Differential Input Voltage Capability LF356N ApplicationsPrecision High-Speed IntegratorsFast D/A and A/D ConvertersHigh Impedance BuffersWideband, Low Noise, Low Drit AmplifiersLogarithmic AmplifersPhotocell AmplifersSample and Hold Circuits LF356N PinoutThe following figure is the diagram of LF356N pinout. LF356N Pinout LF356N ReplacementLF356N/NOPB LF356N CAD ModelsFollowings are LF356N Symbol, Footprint, and 3D Model. LF356N Symbol LF356N Footprint LF356N 3D Model LF356N Schematic DiagramsThe architecture of LF356N is shown in the picture below. LF356N Schematic Diagrams LF356N Circuit DiagramFollowing is the circuit diagram of LF356N. LF356N Circuit Diagram LF356N Block DiagramThe following figure shows the block diagram of LF356N. LF356N Block Diagram LF356N SpecificationMaximum Dual Supply Voltage+/- 18 VPSRR - Power Supply Rejection Ratio80 dBIn - Input Noise Current Density0.01 pA/sqrt HzCMRR - Common Mode Rejection Ratio100 dBInput TypeRail-to-RailOperating Supply Current5 mAGBP - Gain Bandwidth Product5 MHzMaximum Operating Temperature+ 70 CNumber of Channels1 ChannelSupply Voltage - Max44 VMinimum Operating Temperature0 CVos - Input Offset Voltage2 mVProduct CategoryOperational Amplifiers - Op AmpsTechnologyBiFETShutdownNo ShutdownSR - Slew Rate12 V/usIb - Input Bias Current200 pASupply Voltage - Min10 VVcm - Common Mode Voltage10 V to 36 Ven - Input Voltage Noise Density12 nV/sqrt HzPackage / CasePDIP-8Mounting StyleThrough HoleProductOperational AmplifiersMinimum Dual Supply Voltage+/- 5 VOutput Current per Channel25 mA LF356N vs LF356N/NOPB  LF356NLF356N/NOPBPart Life Cycle CodeObsoleteTransferredPart Package CodeDIPDIPPackage DescriptionDIP, DIP8,.3DIP, DIP8,.3Pin Count88Reach Compliance Codenot_compliantcompliantECCN CodeEAR99EAR99HTS Code8542.33.00.018542.33.00.01Amplifier TypeOPERATIONAL AMPLIFIEROPERATIONAL AMPLIFIERArchitectureVOLTAGE-FEEDBACKVOLTAGE-FEEDBACKAverage Bias Current-Max (IIB)0.0002 µA0.0002 µABias Current-Max (IIB) @25C0.0002 µA0.0002 µACommon-mode Reject Ratio-Nom100 dB100 dBFrequency CompensationYESYESInput Offset Current-Max (IIO)0.002 µA0.002 µAInput Offset Voltage-Max13000 µA13000 µAJESD-30 CodeR-PDIP-T8R-PDIP-T8JESD-609 Codee0e3Length9.817 mm9.817 mmLow-BiasYESYESLow-OffsetNONOMoisture Sensitivity Level11Neg Supply Voltage Limit-Max-18 V-18 VNeg Supply Voltage-Nom (Vsup)-15 V-15 VNumber of Functions11Number of Terminals88Operating Temperature-Max70°C70°CPackage Body MaterialPLASTIC/EPOXYPLASTIC/EPOXYPackage CodeDIPDIPPackage Equivalence CodeDIP8,.3DIP8,.3Package ShapeRECTANGULARRECTANGULARPackage StyleIN-LINEIN-LINEPacking MethodRAILRAILPeak Reflow Temperature (Cel)NOT SPECIFIED260Power Supplies+-15 V+-15 VQualification StatusNot QualifiedNot QualifiedSeated Height-Max5.08 mm5.08 mmSlew Rate-Nom12 V/us12 V/usSupply Current-Max10 mA10 mASupply Voltage Limit-Max18 V18 VSupply Voltage-Nom (Vsup)15 V15 VSurface MountNONOTechnologyBIPOLARBIPOLARTerminal FinishTin/Lead (Sn/Pb)Matte Tin (Sn)Terminal FormTHROUGH-HOLETHROUGH-HOLETerminal Pitch2.54 mm2.54 mmTerminal PositionDUALDUALTime@Peak Reflow Temperature-Max (s)NOT SPECIFIED40Unity Gain BW-Nom5000 kHz5000 kHzVoltage Gain-Min1500015000Width7.62 mm7.62 mmBase Number Matches41Common-mode Reject Ratio-Min 80 dB LF356N ManufacturerTexas Instruments Incorporated (TI) is a global semiconductor design and manufacturing company that develops analog ICs and embedded processors. By employing the world's brightest minds, TI creates innovations that shape the future of technology. TI is helping more than 100,000 customers transform the future, today. LF356N DatasheetYou can download this datasheet for LF356N–Datasheet from the link given below: LF356N Datasheet Using WarningsNote: Please check their parameters and pin configuration before replacing them in your circuit. FAQWhat are the LF356 devices are designed for?High slew rate, wide bandwidth, extremely fast settling time, low voltage and current noise and a low 1/f noise corner. What are the features LF356 amplifiers? Low input bias and offset currents/low offset voltage and offset voltage drift, coupled with offset adjust.

DescriptionDS1302 is a low-power real-time clock chip with trickle current charging capability. It can time the year, month, day, week, hour, minute, and second.This Video Introduces DS1302 Arduino Realtime ClockCatalogDescriptionDS1302 PinoutDS1302 Documents and MediaDS1302 CAD ModelsDS1302 ParametersDS1302 FeaturesDS1302 AdvantageDS1302 ApplicationsDS1302 Typical Operating CircuitDS1302 Environmental and Export ClassificationsDS1302 Block DiagramHow to Use DS1302DS1302 RTC ModuleDS1302 Command ByteFAQOrdering & QuantityDS1302 PinoutThe figure below shows the pin arrangement of DS1302. Among them, Vcc2 is the main power supply, and VCC1 is the backup power supply. The continuous operation of the clock can be maintained even when the main power is off. DS1302 is powered by the larger of Vcc1 or Vcc2. When Vcc2 is greater than Vcc1+0.2V, Vcc2 supplies power to DS1302. When Vcc2 is less than Vcc1, DS1302 is powered by Vcc1. X1 and X2 are the oscillation sources and an external 32.768kHz crystal oscillator. RST is the reset/chip select line. All data transfers are started by driving the RST input to high. RST input has two functions: First, RST turns on the control logic, allowing the address/command sequence to be sent to the shift register; second, RST provides a method to terminate single-byte or multi-byte data transmission. When RST is high, all data transfers are initialized, allowing operations on DS1302. If RST is set to a low level during the transfer, the data transfer will be terminated and the I/O pin will become high impedance. During power-on operation, RST must remain low before Vcc>2.0V. Only when SCLK is low, can RST be set high. I/O is a serial data input and output terminal (two-way), which will be described in detail later. SCLK is the clock input terminal.Pin NumberPin NameDescription1VCC2Primary Power-Supply Pin in Dual Supply Configuration. VCC1 is connected to abackup source to maintain the time and date in the absence of primary power. TheDS1302 operates from the larger of VCC1 or VCC2. When VCC2 is greater than VCC1 +0.2V, VCC2 powers the DS1302. When VCC2 is less than VCC1, VCC1 powers theDS1302.2X1Connections for Standard 32.768kHz Quartz Crystal. The internal oscillator isdesigned for operation with a crystal having a specified load capacitance of 6pF.For more information on crystal selection and crystal layout considerations, refer toApplication Note 58: Crystal Considerations for Dallas Real-Time Clocks. TheDS1302 can also be driven by an external 32.768kHz oscillator. In thisconfiguration, the X1 pin is connected to the external oscillator signal and the X2 pinis floated.3X24GNDGround5CEInput. CE signal must be asserted high during a read or a write. This pin has aninternal 40kΩ (typ) pulldown resistor to ground. Note: Previous data sheet revisionsreferred to CE as RST. The functionality of the pin has not changed.6I/OInput/Push-Pull Output. The I/O pin is the bidirectional data pin for the 3-wireinterface. This pin has an internal 40kΩ (typ) pulldown resistor to ground.7SCLKInput. SCLK is used to synchronize data movement on the serial interface. This pinhas an internal 40kΩ (typ) pulldown resistor to ground.8VCC1Low-Power Operation in Single Supply and Battery-Operated Systems and LowPower Battery Backup. In systems using the trickle charger, the rechargeableenergy source is connected to this pin. UL recognized to ensure against reversecharging current when used with a lithium battery.DS1302 Documents and MediaDatasheetsDS1302Other Related DocumentsTips for Writing Bulletproof Real-Time Clock Control CodeMfg Application NotesEstimating Super Capacitor Backup Time on Trickle-Charger Real-Time ClocksSelecting a Backup Source for Real-Time ClocksOscillator Design Considerations for Low-Current ApplicationsState Machine Logic in Binary-Coded Decimal (BCD)-Formatted Real-Time ClocksEnvironmental InformationHalogen CertificateRed Phosphorous CertificateMaterial Declaration DS1302PCN Obsolescence/ EOLMult Dev OBS 15/Jul/2015HTML DatasheetDS1302EDA / CAD ModelsDS1302 by SnapEDADS1302 by Ultra LibrarianDS1302 CAD ModelsDS1302 SymbolDS1302 FootprintDS1302 ParametersBase Product NumberDS1302Battery Backup SwitchingBackup SwitchingCategoryIntegrated Circuits (ICs)Clock/Timing - Real Time ClocksCurrent - Timekeeping (Max)0.3µA ~ 1µA @ 2V ~ 5VDate FormatYY-MM-DD-ddFeaturesLeap Year, NVSRAM, Trickle-ChargerFunctionCalendar, Clock, NV Timekeeping RAM, Trickle ChargerInterface3-Wire SerialManufacturerMaxim IntegratedMaximum Operating Temperature+ 70°CMinimum Operating Temperature0°CMounting StyleThrough HoleOperating Temperature0°C ~ 70°CPackageTubePackage / Case8-DIP (0.300", 7.62mm)           PackagingTubePart StatusObsoleteProduct CategoryReal Time ClockRoHSNRTC Bus InterfaceSerialRTC Memory Size31 BSubcategoryClock & Timer ICsSupplier Device Package8-PDIPSupply Voltage - Max5.5 VSupply Voltage - Min2 VTime FormatHH:MM:SS (12/24 hr)TypeClock/CalendarVoltage - Supply, Battery2V ~ 5.5V DS1302 FeaturesCompletely Manages All Timekeeping Functionso Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 2100o 31 x 8 Battery-Backed General-Purpose RAMSimple Serial Port Interfaces to Most Microcontrollerso Simple 3-Wire Interfaceo TTL-Compatible (VCC = 5V)o Single-Byte or Multiple-Byte (Burst Mode) Data Transfer for Read or Write of Clock or RAM Data Low Power Operation Extends Battery Backup Run Timeo 2.0V to 5.5V Full Operationo Uses Less Than 300nA at 2.0V8-Pin DIP and 8-Pin SO Minimizes Required SpaceOptional Industrial Temperature Range: -40°C to +85°C Supports Operation in a Wide Range of ApplicationsUnderwriters Laboratories® (UL) RecognizedDS1302 AdvantageThe DS1302 trickle-charge timekeeping chip contains a real-time clock/calendar and 31 bytes of static RAM. It communicates with a microprocessor via a simple serial interface. The real-time clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with an AM/PM indicator. Interfacing the DS1302 with a microprocessor is simplified by using synchronous serial communication. Only three wires are required to communicate with the clock/RAM: CE, I/O (data line), and SCLK (serial clock). Data can be transferred to and from the clock/RAM 1 byte at a time or in a burst of up to 31 bytes. The DS1302 is designed to operate on very low power and retain data and clock information on less than 1µW. The DS1302 is the successor to the DS1202. In addition to the basic timekeeping functions of the DS1202, the DS1302 has the additional features of dual power pins for primary and backup power supplies, programmable trickle charger for VCC1, and seven additional bytes of scratchpad memory.DS1302 ApplicationsThe applications of DS1302 include incorporated digital clocks/ timers of various modules in our real lives.Other equivalents ICs of RTC are: DS1307, DS3231, DS3232DS1302 Typical Operating CircuitDS1302 Environmental and Export ClassificationsAttributeDescriptionRoHS StatusRoHS non-compliantMoisture Sensitivity Level (MSL)1 (Unlimited)How to Use DS1302A typical operating circuit for DS1302 is given below. DS1302 have two power input, one is from cell and other is from controller. A crystal oscillator of 32.768 kHz is used to generate required frequency. For interfacing Data line, Reset Pin and Serial-clock pins of DS1302 are connected with the micro-controller.DS1302 Block DiagramDS1302 RTC ModuleDS1302 is a tickle-charge timekeeping chip which contains a real-time clock/calendar and 31 bytes of static RAM. DS1302 uses serial communication to interact with microcontrollers. Also, it automatically adjust the date for the month with fewer days. Clock operates in 24hr or 12hr format with an AM/PM indicator.DS1302 chip is also commonly used as DS1302 RTC module which comes with a 32 kHz crystal and on-board battery backup all in a small SIP module that is compatible with a breadboard. DS1302 module are used by makers with Arduino, Raspberry Pi and other Micro-controllers.A DS1302 RTC module pinout is shown in below image.DS1302 Command ByteA command byte initiates each data transfer. The MSB (bit 7) must be a logic 1. If it is 0, writes to the DS1302 will be disabled. Bit 6 specifies clock/calendar data if logic 0 or RAM data if logic 1. Bits 1 to 5 specify the designated registers to be input or output, and the LSB (bit 0) specifies a write operation (input) if logic 0 or read operation (output) if logic 1. The command byte is always input starting with the LSB (bit 0).DS1302 RegisterDS1302 has 12 registers, of which 7 registers are related to calendar and clock. The stored data bits are in the form of BCD codes. The calendar, time registers and their control words are shown in Table 1.In addition, DS1302 also has year register, control register, charging register, clock burst register, and RAM-related registers. The clock burst register can read and write the contents of all registers except the charging register in sequence at one time. The DS1302 and RAM-related registers are divided into two categories: One is a single RAM unit, with 31 in total. Each unit is configured as an 8-bit byte, and its command control word is C0H～FDH. Among them, odd numbers are read operations, and even numbers are write operations; the other type is RAM registers in burst mode. In this mode, all 31 bytes of RAM can be read and written at once, and the command control words are FEH (write) and FFH (read).FAQHow DS1302 work?The DS1302 trickle-charge timekeeping chip contains a real-time clock/calendar and 31 bytes of static RAM. It communicates with a microprocessor via a simple serial interface. The real-time clock/calendar provides seconds, minutes, hours, day, date, month, and year information.What is DS3231 RTC module?DS3231 Module is a Bread Board friendly extremely precise I²C real time clock Module. This module made using DS3231 RTC and AT24C32 EEPROM integrated with temperature compensated crystal oscillator. AT24C32 provides 32,768 bits of serial EEPROM organized as 4096 words of 8 bits each.What is DS1302?DS1302 is a tickle-charge timekeeping chip which contains a real-time clock/calendar and 31 bytes of static RAM. DS1302 uses serial communication to interact with microcontrollers. Also, it automatically adjust the date for the month with fewer days.What does an RTC do?A real-time clock (RTC) is a computer clock (most often in the form of an integrated circuit) that keeps track of the current time. Although the term often refers to the devices in personal computers, servers and embedded systems, RTCs are present in almost any electronic device which needs to keep accurate time.How do you use RTC?Wiring It Up.5V is used to power to the RTC chip when you want to query it for the time. If there is no 5V signal, the chip goes to sleep using the coin cell for backup.Connect GND to common power/data ground.Connect the SCL pin to the I2C clock SCL pin on your Arduino. ...Connect the SDA pin to the I2C data SDA pin on your Arduino.