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Product details

Parameters

Number of supplies monitored 1 Threshold voltage 1 (Typ) (V) 4.55 Features Active-low enable, Manual reset, Wide input voltage, Dual output Reset threshold accuracy (%) 2 Output driver type/reset output Active-high, Active-low, Open-drain Time delay (ms) Programmable Rating Catalog Watchdog timer WDI (sec) None Operating temperature range (C) -40 to 85, 0 to 70 open-in-new Find other Supervisor & reset ICs

Package | Pins | Size

PDIP (P) 8 93 mm² 9.81 x 9.43 SOIC (D) 8 19 mm² 3.91 x 4.9 SOP (PS) 8 48 mm² 6.2 x 7.8 open-in-new Find other Supervisor & reset ICs

Features

  • Power-On Reset Generator
  • Automatic Reset Generation After Voltage Drop
  • Wide Supply-Voltage Range
  • Precision Voltage Sensor
  • Temperature-Compensated Voltage Reference
  • Externally Adjustable Pulse Duration
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Description

The TL77xxA family of integrated-circuit supply-voltage supervisors is designed specifically for use as reset controllers in microcomputer and microprocessor systems. The supply-voltage supervisor monitors the supply for undervoltage conditions at the SENSE input. During power up, the RESET output becomes active (low) when VCC attains a value approaching 3.6 V. At this point (assuming that SENSE is above VIT+), the delay timer function activates a time delay, after which outputs RESET and RESET go inactive (high and low, respectively). When an undervoltage condition occurs during normal operation, RESET and RESET go active.

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Technical documentation

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Type Title Date
* Datasheet TL77xxA Supply-Voltage Supervisors datasheet (Rev. K) Sep. 29, 2016
White papers Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019
Technical articles Don’t underestimate the power of an LDO Oct. 19, 2013
Technical articles How to optimize your DSP power budget Oct. 03, 2013
Technical articles "X" Marks the spot - 7 Treasures in a pirate engineer's treasure chest Sep. 19, 2013
Technical articles Power Tips: How to be discrete Sep. 17, 2013
Application notes Supply Voltage Supervisor TL77xx Series Jan. 01, 1997

Design & development

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CAD/CAE symbols

Package Pins Download
PDIP (P) 8 View options
SO (PS) 8 View options
SOIC (D) 8 View options

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