TL7759

SUPPLY-VOLTAGE SUPERVISORS

SLVS042D – JANUARY 1991 – REVISED JULY 1999

1

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

D Power-On Reset Generator

D Automatic Reset Generation After Voltage

Drop

D Precision Input Threshold

Voltage . . . 4.55 V

±120 mV

D Low Standby Current ...20 µA

D Reset Outputs Defined When VCC

Exceeds 1 V

D True and Complementary Reset Outputs

D Wide Supply-Voltage Range ...1 V to 7 V

description

The TL7759 is a supply-voltage supervisor designed for use as a reset controller in microcomputer and

microprocessor systems. The supervisor monitors the supply voltage for undervoltage conditions. During power

up, when the supply voltage, VCC, attains a value approaching 1 V, the RESET and RESET outputs become

active (high and low, respectively) to prevent undefined operation. If the supply voltage drops below the input

threshold voltage level (VIT– ), the reset outputs go to the reset active state until the supply voltage has returned

to its nominal value (see timing diagram).

The TL7759C is characterized for operation from 0

°C to 70°C.

AVAILABLE OPTIONS

PACKAGED DEVICES

TA

SMALL

OUTLINE

(D)

PLASTIC

DIP

(P)

SHRINK

SMALL

OUTLINE

(PW)

CHIP

FORM

(Y)

0

°C to 70°C

TL7759CD

TL7759CP

TL7759CPW

TL7759Y

The D and PW packages are available taped and reeled. Add the suffix R to

the device type (e.g., TL7759CDR). Chip forms are tested at 25

°C.

functional block diagram

GND

RESET

RESET

VCC

–

+

5

7

8

4

Reference

Voltage

Copyright

© 1999, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

1

2

3

4

8

7

6

5

NC

NC

NC

GND

RESET

RESET

NC

VCC

D, P, OR PW PACKAGE

(TOP VIEW)

NC – No internal connection

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.