Texas Instruments 5962-8868505PA, 5962-8868505HA, 5962-88685052A, 5962-8868504HA, 5962-88685042A Datasheet

TL7702B, TL7705B

SUPPLY-VOLTAGE SUPERVISORS

SLVS037H – SEPTEMBER 1989 – REVISED JULY 1999

1

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D

Power-On Reset Generator

D

Automatic Reset Generation After
Voltage Drop

D

RESET Output Defined From VCC ≥ 1 V

D

Precision V oltage Sensor

D

T emperature-Compensated Voltage
Reference

D

True and Complement Reset Outputs

D

Externally Adjustable Pulse Duration

description

The TL7702B and TL7705B 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 (low) when

V

CC

attains a value approaching 1 V. As V

CC

approaches 3 V (assuming that SENSE is above
VT+), 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 the value of the external capacitor
C

T

: td ≈ 2.6 × 104 × CT, where CT is in farads (F)

and td is in seconds (s).
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 and TL7705BC are characterized for operation from 0°C to 70°C. The TL7702BI and TL7705BI
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.

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.

3212019

910111213

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)

NC

REF

NC

RESET

NC

V

NC

NC

GND

NC

CC

1
2
3
4

8
7
6
5

REF

RESIN

CT

GND

V

CC

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
V

CC

SENSE
RESET
RESET

TL7705BM ...U PACKAGE

(TOP VIEW)

•

NC – No internal connection

NC – No internal connection

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.

TL7702B, TL7705B
SUPPLY-VOLTAGE SUPER VISORS

SLVS037H – SEPTEMBER 1989 – REVISED JULY 1999

2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

AVAILABLE OPTIONS

PACKAGED DEVICES

T

A

SMALL

OUTLINE

(D)

CHIP

CARRIER

(FK)

CERAMIC

DIP

(JG)

PLASTIC

DIP

(P)

CERAMIC

FLATPACK

(U)

CHIP FORM

(Y)

°

°

TL7702BCD — — TL7702BCP —

0°C to 70°C

TL7705BCD — — TL7705BCP —

°

°

TL7702BID — — TL7702BIP —

TL7702BY

,

–

40°C to 85°C

TL7705BID — — TL7705BIP —

TL7702BY,

TL7705BY

–40°C to 125°C TL7705BQD — — — —

°

°

— TL7702BMFK TL7702BMJG — TL7702BMU

–

55°C to 125°C

— TL7705BMFK TL7705BMJG — TL7705BMU

The D package is available taped and reeled. Add the suffix R to device type (e.g., TL7702BCDR). Chip forms are tested at
25°C.

TL7702B, TL7705B

SUPPLY-VOLTAGE SUPER VISORS

SLVS037H – SEPTEMBER 1989 – REVISED JULY 1999

3

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

functional block diagram

The functional block diagram is shown for illustrative purposes only; the actual circuit includes a trimming
network to adjust the reference voltage and sense-comparator trip point.

RESIN

≈ 70 µA

R1
(see Note A)

R2
(see Note A)

Reference

Voltage

SENSE

GND

V

CC

CT

RESET

RESET

REF

8

3

7

2

4

6

5

1

Pin numbers shown are for the D, JG, and P packages.
NOTE A: TL7702B: R1 = 0 Ω, R2 = open

TL7705B: R1 = 23 kΩ, R2 = 10 kΩ, nominal

typical timing diagram

V

IT–

RESET

V

res

0

t

d

0

VCC and

SENSE

t

d

V

IT–

V

IT+

V

IT+

V

res

Output
Undefined

Output

Undefined

TL7702B, TL7705B
SUPPLY-VOLTAGE SUPER VISORS

SLVS037H – SEPTEMBER 1989 – REVISED JULY 1999

4

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

†

Supply voltage, VCC (see Note 1) 20 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input voltage range, VI: RESIN –0.3 V to 20 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SENSE –0.3 V to 20 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

High-level output current, I

OH

(RESET) –30 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Low-level output current, IOL (RESET) 30 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Package thermal impedance, θJA (see Notes 2 and 3): D package 97°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . .

P package 127°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Case temperature for 60 seconds, T

C

: FK package 260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: JG or U packages 300°C. . . . . . . . . . . . . .

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D or P packages 260°C. . . . . . . . . . . . . . . .

Storage temperature range, T

stg

–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

†

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES: 1. All voltage values are with respect to the network ground terminal.

2. Maximum power dissipation is a function of TJ(max),

θ

JA

, and TA. The maximum allowable power dissipation at any allowable

ambient temperature is PD = (TJ(max) – TA)/

θ

JA

. Operating at the absolute maximum TJ of 150°C can impact reliability.

3. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace
length of zero.

recommended operating conditions

MIN MAX UNIT

Supply voltage, V

CC

3.6 18 V

High-level input voltage, V

IH

RESIN 2 18 V

Low-level input voltage, V

IL

RESIN 0 0.8 V

Input voltage, V

I

SENSE 0 18 V

High-level output current, I

OH

RESET –16 mA

Low-level output current, I

OL

RESET 16 mA
TL770xBC 0 70

p

p

TL770xBI –40 85

°

Operating free-air temperature range, T

A

TL7705BQ –40 125

°C

TL7705BM –55 125