TL7702B, TL7705B, TL7733B

SUPPLY-VOLTAGE SUPERVISORS

SLVS037M – SEPTEMBER 1989 – REVISED MAY 2003

1

POST OFFICE BOX 655303

Voltage Drop

Reference

32 1 20 19

910 11 12 13

4

5

6

7

8

18

17

16

15

14

NC

SENSE

NC

RESET

NC

NC

RESIN

NC

CT

NC

TL7705BM ...FK PACKAGE

(TOP VIEW)

1

2

3

4

8

7

6

5

REF

RESIN

CT

GND

SENSE

RESET

RESET

TL77xxBC ...D OR P PACKAGE

TL7705BM . . . JG PACKAGE

TL7705BQ ...D PACKAGE

(TOP VIEW)

1

2

3

4

5

10

9

8

7

6

NC

REF

RESIN

CT

GND

NC

SENSE

RESET

RESET

TL7705BM ...U PACKAGE

(TOP VIEW)

NC – No internal connection

NC – No internal connection

description/ordering information

The TL7702B, TL7705B, and TL7733B are integrated-circuit supply-voltage supervisors designed 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

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, outputs RESET and

RESET go active. To ensure that a complete reset occurs, the reset outputs remain active for a time delay after

the voltage at the SENSE input exceeds the positive-going threshold value. The time delay is determined by

An external capacitor (typically 0.1

µF) must be connected to REF to reduce the influence of fast transients in

the supply voltage.

The TL7702BC, TL7705BC, and TL7733BC are characterized for operation from 0

°C to 70°C. The TL7702BI,

TL7705BI, and TL7733BI are characterized for operation from –40

°C to 85°C. The TL7705BQ is characterized

for operation from –40

°C to 125°C. The TL7705BM is characterized for operation from –55°C to 125°C.

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.

The TL7705BM is obsolete

and no longer is supplied.

Copyright

 2003, 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.

On products compliant to MIL-PRF-38535, all parameters are tested

unless otherwise noted. On all other products, production

processing does not necessarily include testing of all parameters.