Datasheet4U Logo Datasheet4U.com

LMC6953 - PCI Local Bus Power Supervisor

Description

The LMC6953 is a voltage supervisory chip designed to meet PCI (Peripheral Component Interconnect) Specifications Revision 2.1.

It monitors 5V and 3.3V power supplies.

In cases of power-up, power-down, brown-out, power failure and manual reset interrupt, the LMC6953 provides an active low reset.

Features

  • n Compliant to PCI specifications revision 2.1. n Under and over voltage detectors for 5V and 3.3V n Power failure detection (5V falling under 3.3V by 300 mV max) n Manual reset input pin n Guaranteed RESET assertion at VDD = 1.5V n Integrated reset delay circuitry n Open drain output n Adjustable reset delay n Response time for over and under voltage detection: 490 ns Max n Power failure response time: 90 ns Max n Requires minimal external components.

📥 Download Datasheet

Datasheet preview – LMC6953

📁 Similar Datasheet

  • LMC6953 - PCI Local Bus Power Supervisor (Texas Instruments)
  • LMC6001 - Ultra-Low Input Current Amplifier (Texas Instruments)
  • LMC6022 - Low Power CMOS Dual Operational Amplifier (Texas Instruments)
  • LMC6024 - Low Power CMOS Quad Operational Amplifier (Texas Instruments)
  • LMC6032 - CMOS Dual Operational Amplifier (Texas Instruments)
  • LMC6034 - CMOS Quad Operational Amplifier (Texas Instruments)
  • LMC6035 - CMOS Operational Amplifier (Texas Instruments)
  • LMC6035-Q1 - CMOS Operational Amplifier (Texas Instruments)
  • LMC6036 - CMOS Operational Amplifier (Texas Instruments)
  • LMC6041 - CMOS Single Micropower Operational Amplifier (Texas Instruments)
Other Datasheets by National Semiconductor
  • LMC6001 - Ultra Ultra-Low Input-Current Amplifier
  • LMC6008 - 8 Channel Buffer
  • LMC6009 - 9 Channel Buffer Amplifier
  • LMC6022 - Low Power CMOS Dual Operational Amplifier
  • LMC6024 - Low Power CMOS Quad Operational Amplifier
  • LMC6032 - CMOS Dual Operational Amplifier
  • LMC6034 - CMOS Quad Operational Amplifier
  • LMC6035 - Low Power 2.7V Single Supply CMOS Operational Amplifiers

Full PDF Text Transcription

Click to expand full text
LMC6953 PCI Local Bus Power Supervisor April 1998 LMC6953 PCI Local Bus Power Supervisor General Description The LMC6953 is a voltage supervisory chip designed to meet PCI (Peripheral Component Interconnect) Specifications Revision 2.1. It monitors 5V and 3.3V power supplies. In cases of power-up, power-down, brown-out, power failure and manual reset interrupt, the LMC6953 provides an active low reset. RESET holds low for 100 ms after both 5V and 3.3V powers recover, or after manual reset signal returns to high state. The external capacitor on pin 8 adjusts the reset delay. This part is ideal on PCI motherboards or add-in cards to ensure the integrity of the entire system when there is a fault condition. The active low reset sets the microprocessor or local device in a known state.
Published: |