Images are for reference only See Product Specifications
Kynix Part #: KY32-FM811RUX
Manufacturer Part#:


Product Category: IC Chips
Manufacturer: FAIRCHILD
  datasheetFM811RUX Datasheet
Package: SOT143
Quantity: 9540 PCS
Lead Free Status / RoHS Status: Lead free / RoHS Compliant
Moisture Sensitivity Level(MSL): 3(168 Hours)
Real Time Availability
Stock:9,540 Can Ship Immediately
Enter Quantity:
Buy Buy
1+: $0.00000
10+: $0.00000
100+: $0.00000
500+: $0.00000
1000+: $0.00000
Warm Tips:Please fill out the below form and we will contact you as soon as possible.
*Buy Quantity:   Target Price: (USD)
*Contact Name:   Company Name:
Phone: (Including the Country Code)
SpecificationsPackage PaymentShippingAfter-sales Guarantee
Manufacturer: FAIRCHILD
Product Category: IC Chips
Features, Applications

Features, Applications


Feature Precision Voltage Monitor for or 5V Power Supplies 6μA Supply Current 140ms Minimum Reset Pulse Width RESET Remains Valid with VCC as Low as 1.4V Active Low Manual Reset Input No External Components 4-Pin SOT-143 Package


The is a low cost microprocessor supervisory circuit that asserts a reset if the power supply drops below a designated threshold or the manual reset pin is forced low. Several different reset thresholds are available to accommodate systems operating or 5V.


Critical Microprocessor Power Monitoring Portable Equipment Intelligent Instruments Computers & Printers Controllers

The FM811 has an active low RESET output, while the FM812 offers an active high RESET output. The reset output is guaranteed to remain asserted for a minimum of 140ms after VCC has risen above the designated reset threshold. The FM811/FM812 is available 4-pin SOT-143.

Typical Applications

PRELIMINARY INFORMATION describes products that are in the design stage. Specifications may change in any manner whatever without notice. Contact Fairchild Semiconductor for current information.

Pin Number Pin Name GND RESET FM812 1 N/A Ground Pin RESET goes low if VCC falls below the reset threshold and remains asserted for one reset time-out period (140ms min.) after VCC exceeds the reset threshold. RESET goes high if VCC falls below the reset threshold and remains asserted for one reset time-out period (140ms min.) after VCC exceeds the reset threshold. Manual reset input. Shorting this pin to GND forces a reset. The reset will remain asserted as long MR is held low and for one reset time-out period (140ms min.) after MR goes high. This input cannot be driven by a CMOS or TTL logic. Push-button switch is recommended to be used with this pin. Float if unused. Power supply input, or 5V Description

Parameter Terminal Voltage Input Current Output Current Rate of Rise Operating Temperature Range Storage Temperature Range Lead Temperature Range Power Dissipation (TA = +70°C) Symbol VCC MR VCC, MR RESET, RESET VCC TA Ratings -0.3 to (VCC 300 320 Units V mA V/μs °C mW

Stresses above those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent device failure. Functionality at or above these limits is not implied. Exposure to absolute maximum ratings for extended periods may affect device reliability. Operating ranges define those limits between which the functionality of the device is guaranteed.

VCC = 5V for FM81_L/M/J, VCC = 3.3V for FM81_S/T, VCC = 3V for TA = Operating Temperature Range, unless otherwise noted. Parameter Operating Voltage Range Supply Current, ICC Reset Voltage Threshold, VTH Conditions FM811L/M/J, FM812L/M/J VCC FM811R, FM812R Min. 1.4 1.6 Typ. Max. Units μA V

Reset Time-out Period, tR RESET Output Voltage, VOH ISOURCE 800μA, FM811L/M/J ISOURCE 500μA, FM811R/S/T RESET Output Voltage, VOL VCC= VTH Min., ISINK 3.2mA, FM811L/M/J VCC= VTH Min., ISINK 1.2mA, FM811R/S/T VCC > 1.4V, ISINK = 50μA, TA= to 70°C VCC > 1.6V, ISINK = 50μA, TA= 0.8 x VCC RESET Output Voltage, VOH 1.8V < VCC < VTH Min., ISOURCE = 150μA RESET Output Voltage, VOL ISINK 3.2mA, FM810L/M/J ISINK 10 MR Minimum Pulse Width MR to Reset Delay MR Input Threshold, VIH VCC > VTH Max., 0.7 x VCC MR Input Threshold, VIL VCC > VTH Max., FM81_R/S/T MR Pull-Up Resistance 10 MR Glitch Immunity 

Search Part number : "FM811" Included word is 2
Part Number Manufacturer Package Quantity Description
FM811TUX SOT143 7550
  • FM811SUX
  • FM811TUX
FM811RUX Related keyword.
  • FM811RUX Price
  • FM811RUX Distributor
  • FM811RUX Manufacturer
  • FM811RUX Technical Data
  • FM811RUX PDF
  • FM811RUX Datasheet
  • FM811RUX Picture
  • FM811RUX Image
  • FM811RUX Part
  • FM811RUX Stock
  • FM811RUX Inventory
  • FM811RUX Rfq
  • Buy FM811RUX
  • FM811RUX Inquiry
  • FM811RUX Online Order


Latest Products

DH82C224 S R13E  Intel

DH82C224 S R13EIC Chips, ,Chipsets C224 Chipset Server FCBGA-708

Learn More

DH82C224 S R17A  Intel

DH82C224 S R17AIC Chips, ,Chipsets C224 Chipset Server FCBGA-708

Learn More

DH82Q85 S R174  Intel

DH82Q85 S R174IC Chips, ,Chipsets Q85 Chipset Desktop FCBGA-708

Learn More

DH82Q87 S R19E  Intel

DH82Q87 S R19EIC Chips, ,Chipsets Q87 Chipset Desktop FCBGA-708

Learn More

BD82QS67 S LHAG  Intel

BD82QS67 S LHAGIC Chips, ,Chipsets QS67 Express Chipset Mobile FCBGA-1071

Learn More

How to buy
Payment Terms
By PayPal
By Credit Card
By Wire Transfer
By Western Union
After-sales Service
Quality Control
Return & Replacement
About us
Company Profile
Our History
Corporate Culture
Contact us
Join us
© 2008-2016 all rights reserved.