TS831
MICROPOWER VOLTAGE SUPERVISOR
RESET ACTIVE LOW
s ULTRA LOW POWER CONSUMPTION :
12µA maximum
s PRECISION RESET THRESHOLD
s THRESHOLD VOLTAGE:
s
s
s
s
s
4.33V typ. FOR TS831-5
4.50V typ. FOR TS831-4
2.71V typ. FOR TS831-3
GUARANTEED RESET OPERATION FOR
VCC DOWN TO 1V
OPEN DRAIN OUTPUT COMPARATOR
FAST RESPONSE TIME : 20µs FOR A 10mV
OVERDRIVE
INTERNAL BUILT-IN HYSTERESIS
PIN TO PIN COMPATIBLE WITH MC33064
AND MC33164
D
SO8
(Plastic Micropackage)
Z
TO92
(Plastic Package)
DESCRIPTION
The TS831 is an ultra low power integrated circuit
incorporating a high stability band-gap voltage
reference and a comparator with an 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
internal thermally matched resistors.
The comparator exhibits a 20µs response (with
10mV overdrive) and has an open drain output
active 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 reset operation.
P
TSSOP8
(Thin Shrink Small Outline Package)
PIN CONNECTIONS (top view)
SO8-TSSOP8
APPLICATION
s Power-on reset generator for microcontroller
s Power failure detector
ORDER CODE
TO92
Package
Part Number
Temperature Range
D
TS831-5I
TS831-4I
TS831-3I
-40, +125°C
Z
P
•
•
•
•
•
•
•
•
•
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)
November 2001
1/11
