TS831 Datasheet, PDF (1/11 Pages) STMicroelectronics – MICROPOWER VOLTAGE SUPERVISOR RESET ACTIVE LOW

TS831
MICROPOWER VOLTAGE SUPERVISOR
RESET ACTIVE LOW
s ULTRA LOW POWER CONSUMPTION :
12µA maximum
s PRECISION RESET THRESHOLD
s THRESHOLD VOLTAGE:
4.33V typ. FOR TS831-5
4.50V typ. FOR TS831-4
2.71V typ. FOR TS831-3
s GUARANTEED RESET OPERATION FOR
VCC DOWN TO 1V
s OPEN DRAIN OUTPUT COMPARATOR
s FAST RESPONSE TIME : 20µs FOR A 10mV
OVERDRIVE
s INTERNAL BUILT-IN HYSTERESIS
s PIN TO PIN COMPATIBLE WITH MC33064
AND MC33164
DESCRIPTION
The TS831 ultra low power integrated circuit incor-
porates a high stability band-gap voltage refer-
ence and a comparator with open drain output.
The threshold voltage is set at 4.33V for TS831-5,
4.5V for TS831-4 and 2.71V for TS831-3 by inter-
nal thermally matched resistances.
The comparator exhibits a 20µs response (with
10mV overdrive) and has an open drain output ac-
tive when input voltage is lower than the threshold.
An internal hysteresis, 100mV for TS831-4/
TS831-5 and 60mV for TS831-3, increases the
comparator’s noise margin and prevents false re-
set operation.
APPLICATION
s Power-on reset generator for microcontroller
s Power failure detector
ORDER CODE
Part Number Temperature Range
TS831-5I
TS831-4I
TS831-3I
-40, +125°C
Package
DZP
•••
•••
•••
Z= TO92 Plastic package
D = Small Outline Package (SO) - also available in Tape & Reel (DT)
P = Thin Shrink Small Outline Package (TSSOP) - only available
in Tape & Reel (PT)
D
SO8
(Plastic Micropackage)
Z
TO92
(Plastic Package)
P
TSSO P8
(Thin Shrink Small Outline Package)
PIN CONNECTIONS (top view)
SO8- TSSO P8
TO92
October 2000
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