TL7757 Datasheet, PDF (1/11 Pages) Texas Instruments – SUPPLY-VOLTAGE SUPERVISOR AND PRECISION VOLTAGE DETECTOR

D Power-On Reset Generator
D Automatic Reset Generation After Voltage
Drop
D Low Standby Current . . . 20 µA
D Reset Output Defined When V_CC
Exceeds 1 V
D Complementary Reset Output
D True and Complementary Reset Outputs
D Precision Threshold Voltage
4.55 V ± 120 mV
D High Output Sink Capability . . . 20 mA
D Comparator Hysteresis Prevents Erratic
Resets
description
The TL7757 is a supply-voltage supervisor
designed for use in microcomputer and
microprocessor systems. The supervisor
monitors the supply voltage for undervoltage
conditions. During power up, when the supply
voltage, V_CC, attains a value approaching 1 V, the
RESET output becomes active (low) to prevent
undefined operation. If the supply voltage drops
below threshold voltage level (V_IT–), the RESET
output goes to the active (low) level until the
supply undervoltage fault condition is eliminated.
The TL7757C is characterized for operation from
0°C to 70°C. The TL7757I is characterized for
operation from –40°C to 85°C.
TL7757
SUPPLY-VOLTAGE SUPERVISOR
AND PRECISION VOLTAGE DETECTOR
SLVS041E – SEPTEMBER 1991 – REVISED JULY 1999
D PACKAGE
(TOP VIEW)
RESET 1
V_CC 2
NC 3
GND 4
8 NC
7 NC
6 NC
5 NC
NC –No internal connection
LP PACKAGE
(TOP VIEW)
GND
V_CC
RESET
PK PACKAGE
(TOP VIEW)
VCC GND RESET
GND is in electrical contact with the tab.
AVAILABLE OPTIONS
PACKAGED DEVICES
CHIP FORM
TA
SMALL OUTLINE TO-226AA
SOT-89
(Y)
(D)
(LP)
(PK)
0°C to 70°C
–40°C to 85°C
TL7757CD
TL7757ID
TL7757CLP
TL7757ILP
TL7757CPK
TL7757IPK
TL7757Y
D and LP packages are available taped and reeled. Add the suffix R to device type (e.g.,
TL7757CDR). Chip forms are tested at 25°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.
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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 1999, Texas Instruments Incorporated
1