Datasheet TL7705ACP-A, TL7702ACP-A Datasheet (SGS Thomson Microelectronics)

TL7700 A Series

August1996

SUPPLY VOLTAGE SUPERVISORS

.POWER-ONRESETGENERATOR

.AUTOMATIC RESET GENERATION AFTER

VOLTAGEDROP

.

WIDE SUPPLY VOLTAGE RANGE ... 3V TO
18V

.

PRECISIONVOLTAGESENSOR

.TEMPERATURE-COMPENSATED VOLTAGE

REFERENCE

.

TRUEANDCOMPLEMENTRESETOUTPUTS

.EXTERNALLYADJUSTABLEPULSE WIDTH

N

Minidip

DESCRIPTION

TheTL7700Aseriesaremonolithicintegratedcircuit
supplyvoltagesupervisorsspecificallydesi-gnedfor
use as reset controllers in microcomputer and mi­croprocessorsystems.During power-upthedevice
teststhesupplyvoltageand keepsthe RESETand
RESEToutputsactive (high and low, respectively)
as long as the supply voltage has not reached its
nominalvoltage value. Taking RESIN low has the
sameeffect.Toensurethatthemicrocomputersys­temhasreset,theTL7700Athen initiatesaninternal
timedelaythatdelaysthereturnof the resetoutputs
totheirinactivestates.Sincethetimedelayformost
microcomputersandmicroprocessorsis in theorder
of severalmachinecycles,the device internaltime
delayis determinedby anexternaltimedelayisde­terminedby an externalcapacitorconnectedto the
C

T

input(pin3).

t

d

=1.3 x 104xC

T

Where: CTisin farads(F) and tdinseconds(s).In
addition,when thesupply voltagedrops below the
nominal value, the outputs will be active until the
supplyvoltagereturns to thenominalvalue.An ex­ternalcapacitor(typically0.1µF)mustbeconnected
to theREF output(pin1) to reducethe influenceof
fasttransientsin thesupply voltage.

TheTL7700AIseriesis characterized for operation
from– 25

o

Cto85oC ;theTL7700ACseriesis char-

acterizedfrom 0

o

Cto70oC.

D

SO8

ORDERINGNUMBERS

Temperature Range Minidip S08

0to70

o

C TL77XXACP TL77XXACD

-25to 85

o

C TL77XXAIP TL77XXAID

PIN CONNE C TI ON (top view)

1/7

*

TL7702A R1 =0Ω, R2 = open ; TL7705A R1 = 7.8KΩ, R2 = 10kΩ;TL7709A R1 = 19.7KΩ,R2 = 10kΩ;
TL7712A R1 = 32.7kΩ, R2 = 10kΩ; TL7715AR1= 43.4KΩ, R2 = 10kΩ.

BLOCK DIAGRAM

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

S

Supply Voltage, VCC- (see note 1) 20 V

V

i

Input Voltage Range at RESIN -0.3 to 20 V

V

i

Input Voltage at SENSE : TL7702A (see note 2)

TL7705A
TL7709A
TL7712A
TL7715A

-0.3 to 6

-0.3 to 10

-0.3 to 15

-0.3 to 20

-0.3 to 20

V

I

OH

High-level Output Current at RESET -30 mA

I

OL

Low-level Output Current at RESET 30 mA

T

amb

Operating Free-air Temperature Range :

TL77XXAI
TL77XXAC

-25 to 85
0to70

o

C

T

stg

Storage Temperature Range -65 to 150

o

C

Notes: 1. All voltage values are withrespect to thenetwork ground terminal

2. For the TL7700A, the voltage appliedto theSENSEterminalmust never exceed V

s

.

THERMAL DATA

Symbol Parameter Value Unit

R

th j-amb

Thermal Resistance Junction-ambient Max. 120

o

C/W

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Min. Max. Unit

V

S

Supply Voltage 3.6 18 V

V

IH

High-level Input Voltage at RESIN 2 V

V

IL

Low-level Input Voltage at RESIN 0.6 V

V

i

Voltage at Sense Input TL7702A

TL7705A
TL7709A
TL7712A
TL7715A

0
0
0
0
0

See note 3

10
15
20
20

V

I

OH

High-level Output Current at RESET -16 mA

I

OL

Low-level Output Current at RESET 16 mA

T

amb

Operating Free-air Temperature Range TL77-AI

TL77-AC

-25
0

85
70

o

C

Note : 3. For properoperationof theTL7702A, the voltageapplied to the SENSEterminal should not exceed Vs- 1V or 6V, which everis less.

TL7700A Series

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ELECTRICAL CHARACTERISTICS these specificationsunless otherwise specified, apply for :

T

amb

= –25 to 85oC (TLXXAI),T

amb

= 0 to 70oC (TL77XXAC)

Symbol Parameter Test Conditions (1) Min. Typ. Max. Unit

V

OH

High-level Output Voltage at RESET IOH= –16mA Vs-

1.5

V

V

OL

Low-Level Output Voltage at RESET IOL= 16mA 0.4 V

V

ref

Reference Voltage T

amb

=25oC 2.48 2.53 2.58 V

V

T

Threshold Voltage at SENSE Input TL7702A

TL7705A
TL7709A
TL7712A
TL7715A

V

s

= 3.6V to 18V

T

amb

=25oC

2.48

4.5

7.5

10.6

13.2

2.53

4.55

7.6

10.8

13.5

2.58

4.6

7.7
11

13.8

V

V

T

Threshold Voltage at SENSE Inpu TL7702A

TL7705A
TL7709A
TL7712A
TL7715At

V

s

= 3.6V to 18V 2.45

4.45

7.4

10.4
13

2.53

4.55

7.6

10.8

13.5

2.58

4.6

7.7
11

13.8

V

V

T+,VT–

Hysteresis (2) at SENSE Input TL7702A

TL7705A
TL7709A
TL7712A
TL7715A

V

s

= 3.6V to 18V

T

amb

=25oC

10
15
20
35
45

mV

I

I

Input Current at RESIN Input Vi= 2.4V to V

S

Vi= 0.4V

20

-100

µ

A

I

I

Input Current at SENSE Input TL7702A V

ref<Vi<Vs

- 1.5V 0.5 2

µ

A

I

OH

High-level Output Current at RESET VO= 18V 50 µA

I

OL

Low-level Output Current at RESET VO=0V -50

µ

A

I

S

Supply Current All Inputs and out.

open

1.8 3.3 mA

Notes:

1. All characteristicsare measured withC = 0.1µF from Pin 1 to GND,and with C = 0.1µF fromPin 3 to GND.

2. Hysteresis isthe differencebetween the positivegoinginput threshold voltage.V

T+

,and the negative going input threshold

voltage, V

T-

.

SWITCHING CHARACTERISTICS

Symbol Parameter Test Conditions Min. Typ. Max. Unit

t

pi

Pulse Width at SENSE Input Vih=V

ityp

+0.04 x V

i

ViL=V

ityp

–0.04 x V

i

0.9

µ

s

t

pi

Pulse Width at RESIN Input 0.4

µ

s

t

po

Pulse Width at Output CT= 0.1µF 0.65 1.3 2.6 ms

t

pdHL

Propagation Delay Time from RESIN
to RESET

CL= 100pF, Vs= 5V, RL= 4.7k

Ω

1

µ

s

t

r/f

Rise/Falltime at RESET and RESET CL= 10pF, Vs= 5V, RL= 4.7k

Ω

1

µ

s

TL7700A Series

3/7

Figure 1 : MultiplePower SupplySystemResetGeneration

Figure 2 : ResetControllerforµP

TL7700A Series

4/7

SO8 PACKAGE MECHANICAL DATA

DIM.

mm inch

MIN. TYP. MAX. MIN. TYP. MAX.

A 1.75 0.069
a1 0.1 0.25 0.004 0.010
a2 1.65 0.065
a3 0.65 0.85 0.026 0.033

b 0.35 0.48 0.014 0.019

b1 0.19 0.25 0.007 0.010

C 0.25 0.5 0.010 0.020
c1 45°(typ.)

D 4.8 5.0 0.189 0.197

E 5.8 6.2 0.228 0.244

e 1.27 0.050

e3 3.81 0.150

F 3.8 4.0 0.15 0.157

L 0.4 1.27 0.016 0.050
M 0.6 0.024
S8

°

(max.)

TL7700A Series

5/7

MINIDIP PACKAGE MECHANICAL DATA

DIM.

mm inch

MIN. TYP. MAX. MIN. TYP. MAX.

A 3.32 0.131

a1 0.51 0.020

B 1.15 1.65 0.045 0.065

b 0.356 0.55 0.014 0.022

b1 0.204 0.304 0.008 0.012

D 10.92 0.430
E 7.95 9.75 0.313 0.384

e 2.54 0.100

e3 7.62 0.300
e4 7.62 0.300

F 6.6 0.260

I 5.08 0.200
L 3.18 3.81 0.125 0.150
Z 1.52 0.060

TL7700A Series

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Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for
the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its
use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specification
mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously
supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems
without express written approval of SGS-THOMSON Microelectronics.

 1996 SGS-THOMSON Microelectronics – Printed in Italy – All Rights Reserved

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TL7700A Series

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