tl7700a STMicroelectronics, tl7700a Datasheet

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tl7700a

Manufacturer Part Number
tl7700a
Description
Supply Voltage Supervisors
Manufacturer
STMicroelectronics
Datasheet

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Part Number
Manufacturer
Quantity
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Part Number:
tl7700aCP
Manufacturer:
TI/德州仪器
Quantity:
20 000
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DESCRIPTION
The TL7700Aseriesaremonolithicintegratedcircuit
supplyvoltagesupervisorsspecifically desi-gnedfor
use as reset controllers in microcomputer and mi-
croprocessor systems. During power-up the device
tests the supply voltage and keeps the RESET and
RESET outputs active (high and low, respectively)
as long as the supply voltage has not reached its
nominal voltage value. Taking RESIN low has the
same effect. To ensure that the microcomputer sys-
tem hasreset, the TL7700Athen initiates an internal
time delay that delays the return of the reset outputs
to theirinactivestates. Since the timedelay for most
microcomputersand microprocessors is in the order
of several machine cycles, the device internal time
delay is determined by an external time delay is de-
termined by an external capacitor connected to the
C
t
Where : C
addition, when the supply voltage drops below the
nominal value, the outputs will be active until the
supply voltage returns to the nominal value. An ex-
ternalcapacitor(typically0.1 F) must be connected
to the REF output (pin 1) to reduce the influence of
fast transients in the supply voltage.
The TL7700AI series is characterized for operation
from – 25
acterized from 0
April 2000
d
T
= 1.3 x 10
POWER-ON RESET GENERATOR
AUTOMATIC RESET GENERATION AFTER
VOLTAGE DROP
WIDE SUPPLY VOLTAGE RANGE ... 3V TO
18V
PRECISION VOLTAGE SENSOR
TEMPERATURE-COMPENSATED VOLTAGE
REFERENCE
TRUE AND COMPLEMENT RESET OUTPUTS
EXTERNALLY ADJUSTABLE PULSE WIDTH
input (pin 3).
o
T
C to 85
is in farads (F) and t
4
x C
o
T
C to 70
o
C ; the TL7700AC series is char-
o
C.
d
in seconds (s). In
SUPPLY VOLTAGE SUPERVISORS
ORDERING NUMBERS
PIN CONNECTION (top view)
Temperature Range
-25 to 85
0 to 70
o
TL7700A Series
C
o
C
Min idip
TL77XXACP
TL77XXAIP
SO 8
N
D
Minidip
TL77XXACD
TL77XXAID
S08
1/7

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tl7700a Summary of contents

Page 1

... F) must be connected to the REF output (pin 1) to reduce the influence of fast transients in the supply voltage. The TL7700AI series is characterized for operation o o from – the TL7700AC series is char acterized from April 2000 TL7700A Series SUPPLY VOLTAGE SUPERVISORS ...

Page 2

... T Operating Free-air Temperature Range : amb T Storage Temperature Range stg Notes : 1. All voltage values are with respect to the network ground terminal 2. For the TL7700A, the voltage applied to the SENSE terminal must never exceed V THERMAL DATA Symbol Parameter R Thermal Resistance Junction-ambient th j-amb RECOMMENDED OPERATING CONDITIONS ...

Page 3

... T+ Test Conditions Min +0. 0.9 ih ityp –0. ityp i 0 0 100pF 5V 4. 10pF 5V 4. TL7700A Series Typ. Max. Unit V 0.4 V 2.53 2.58 V 2.53 2.58 V 4.55 4.6 2.53 2.58 V 4.55 4 -100 0 -50 A 1.8 3.3 mA Typ. ...

Page 4

... TL7700A Series Figure 1 : Reset Controller for P 4/7 TL7705 ...

Page 5

... F (1) 3.8 4.0 0.15 L 0.4 1.27 0.016 M 0 (max.) (1) D and F do not include mold flash or protrusions. Mold flash or potrusions shall not exceed 0.15mm (.006inch). OUTLINE AND MAX. MECHANICAL DATA 0.069 0.010 0.065 0.033 0.019 0.010 0.020 0.197 0.244 0.157 0.050 SO8 0.024 TL7700A Series 5/7 ...

Page 6

... TL7700A Series mm inch DIM. MIN. TYP. MAX. MIN. TYP. A 3.32 0.131 a1 0.51 0.020 B 1.15 1.65 0.045 b 0.356 0.55 0.014 b1 0.204 0.304 0.008 D 10.92 E 7.95 9.75 0.313 e 2.54 0.100 e3 7.62 0.300 e4 7.62 0.300 F 6.6 I 5.08 L 3.18 3.81 0.125 Z 1.52 6/7 OUTLINE AND MECHANICAL DATA MAX. 0.065 0.022 0.012 0.430 0.384 0.260 0.200 0.150 Minidip 0.060 ...

Page 7

... The ST logo is a registered trademark of STMicroelectronics 2000 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com TL7700A Series 7/7 ...

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