MAS9138N
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Manufacturer Part#:

MAS9138N

Product Category: IC Chips
Manufacturer: MAS
Description:
  datasheetMAS9138N Datasheet
Package: DIP
Quantity: 73 PCS
Lead Free Status / RoHS Status: Lead free / RoHS Compliant
Moisture Sensitivity Level(MSL): 3(168 Hours)
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Manufacturer: MAS
Product Category: IC Chips
Features, Applications

Features, Applications


Pin compatible with MAS7838 Interfaces a duplex asynchronous to synchronous channel Modem speeds 14.4k, 19.2k and 38.4k bps with a single 4.9152 MHz crystal


DESCRIPTION

is a single chip duplex asynchronous to synchronous converter. It converts asynchronous start stop characters to synchronous format, with stop bit deletion when required as defined in the CCITT recommendation V.14. On the receiver channel MAS9138 converts the incoming synchronous data to asynchronous start stop character format with stop bit insertion when required as defined in the CCITT recommendation V.14. MAS9138 implements the data modes for the synchronous interface as specified in the V.14. MAS9138 can be configured to operate at any frequency to 38.4 kbits/s within these modes. The device contains a bit generator and frequency selection logic to allow easy operation at other data rates. With just one crystal the device can adapt to ten (10) different bit rates it is ideally suited to be used with the most common modem systems ranging from to V.34.


FEATURES

Implements CCITT recommendation V.14 Bypass operation Character length from to 11 bits including start stop and parity bits CMOS and LS-TTL compatible interface Low power consumption (typically 10 mW) No additional circuitry needed to perform conversion Single +3.3...+5V supply o Operating temperature C 16-pin PDIP and SO package


APPLICATION

Data communication systems Adapts asynchronous terminals to synchronous modems Full or half card PC modems using UART as a data source Simplifying data multiplexing systems


Top marking: YYWW = Year Week, XXXXX.X = Lot Number,

Pin name TSL TMG I/O I Function Timing select. 0 selects external sampling timing 16 x TXC from pin 2, TMG. 1 selects internal sampling timing. Timing. Square wave timing signal 16 x TXC (TSL 128 x TXCmax (TSL = 1). Max = 10 Mhz when VDD = 5v and 5MHz when VDD = 3.3v. Oscillator. Output for crystal. If used, the crystal is connected between pins 2 and 3. Transmitter timing (MAS9138 only). Synchronous square wave timing for transmitter. The transmitted data output, TDO is synchronized to the rising edge of TXC. The duty cycle of TXC has 50% 5%. Character length. The total character length including one start bit, one stop bit and possible parity bit is selected with the CL1 and CL2 signals. Extended signalling rate. The tolerance of the synchronous bit rate can be: XESR = 1 (basic signalling rate) TXC -2.5%...+1.0% XESR = 0 (extended signalling rate) TXC -2.5%...2.3% Ground


Pin name TDI TDO XASY Pin no. PDIP O I Transmitter data input. 1 = mark or stop bit. 0 = space, start or break signal. Transmitter data output. Output data is synchronized to the synchronous timing signal TXC (pin 1 = mark. 0 = space. Asynchronous mode. XASY = 0 Asynchronous transmission, XASY = 1 Synchronous transmission. In synchronous transmission the converter is totally bypassed in both directions: TDI = TDO, RDI = RDO Higher speed signalling timing. XHST = 1 normal synchronous to asynchronous conversion (CCITT V.14). XHST = 0 asynchronous to synchronous conversion with higher speed synchronous timing (TXC, RXC). TXC and RXC timing must be 1-2% higher than the normal bit rate in order to allow some overspeed in the asynchronous data. On the receiver side the RX buffer is deleted and the synchronous data RDI is directly connected to the asynchronous output RDO. Receiver data output. RDO is the received data converted back to asynchrnous mode. 1 = mark or stop bit, 0 = space, start or break signal Receiver data input. 1 = mark, 0 = space. The received data must be synchronized to the receiver timing RXC from the synchronous channel (pin 15). Receiver timing (MAS9138 only). Receiver square wave timing from the synchronous channel. The received data RDI must be synchronized to the rising edge of RXC. Power supply I/O Function


Parameter Supply Voltage Supply current Operating Temperature Symbol VDD IDD Ta VDD = 5V Conditions Min 2 -40 Typ to 5.0 Max 5 +85 Unit V mA

Search Part number : "MAS91" Included word is 15
Part Number Manufacturer Package Quantity Description
MAS9168A4GA06-T MAS TSOT23-5 570
MAS9124AST4-T MAS SOT23-5 4113
MAS9124A1ST06 MAS SOT23-5 96360
MAS9161B3GB06-T MAS TSOT23-5 50360
MAS9124A2GA06 ST SOT-153 8860
MAS9124AST4-T-1.8V MCA SOT23-5 2834
MAS9161B3GC06 MAS SOT23-5 7060
MAS9124A2GB06 MAS SOT23-5 14160
MAS9124AST6-T GP/MIC SOT23-5 4080
MAS9164AGB4-T MAS TSOT23-5 28360
MAS9124A2GB06-T MAS TSOT23-5 18106
MAS9124AST8-T MAS SOT23-5 5023
MAS9165ASGB06-T MAS TSOT23-5 689
MAS9124A2GC06 MAS SOT-153 50831
MAS9125B MAS SSOP16 78
MAS9138N RELATED PRODUCT PICTURE
left
  • MAS9168A4GA06-T
  • MAS9124AST4-T
  • MAS9124A1ST06
  • MAS9161B3GB06-T
  • MAS9124A2GA06
  • MAS9124AST4-T-1.8V
  • MAS9161B3GC06
  • MAS9124A2GB06
  • MAS9124AST6-T
  • MAS9164AGB4-T
  • MAS9124A2GB06-T
  • MAS9124AST8-T
  • MAS9165ASGB06-T
  • MAS9124A2GC06
  • MAS9125B
right
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