TS834_01 Datasheet, PDF (1/7 Pages) STMicroelectronics – MICROPOWER VOLTAGE SUPERVISOR RESET ACTIVE LOW OR HIGH INTEGRATED TIMER

TS834
MICROPOWER VOLTAGE SUPERVISOR
RESET ACTIVE LOW OR HIGH INTEGRATED TIMER
s ULTRA LOW POWER CONSUMPTION :
12µA max. @ V_CC = 5V
s BOTH ACTIVE HIGH AND ACTIVE LOW
OUTPUTS
s RESET TIMER WITH DISABLE FUNCTION
s PRECISION RESET THRESHOLD (guaran-
teed over Temperature)
s 4.33V typ. THRESHOLD VOLTAGE
s GUARANTEED RESET OPERATION DOWN
TO 1.5V
s OPEN DRAIN OUTPUT WITH
s Vol = 450mV typ.@ Iol = 8mA & V_CC = 4V
s FAST RESPONSE TIME : 20µs FOR A 10mV
OVERDRIVE
s 100mV INTERNAL HYSTERESIS
DESCRIPTION
The TS834 is a voltage supervisor providing two
different outputs (one active low and one active
high) with an integrated timer that can be dis-
abled.
It incorporates a high stability bandgap voltage
reference and a comparator with open drain out-
put.
The threshold voltage is set at 4.33V by internal
thermally matched resistors.
The comparator exhibits a 20µs response (with
10mV overdrive).
An internal hysteresis of 100mV increases the
comparator noise margin and prevents false reset
operation.
APPLICATION
s Computers
s Microcontrollers
s Microprocessor systems
s Intelligent instruments
s Power failure detection
January 2001
D
SO8
(Plastic Micropackage)
P
TSSOP8
(Thin Shrink Small Outline Package)
ORDER CODE
Part Number Temperature Range
TS834-5I
-40, +85°C
Package
D
P
•
•
D = Small Outline Package (SO) - also available in Tape & Reel (DT)
P = Thin Shrink Small Outline Package (TSSOP) - only available
in Tape & Reel (PT)
PIN CONNECTIONS (top view)
Reset Low ₁
Vcc 2
NC
3
Gnd ₄
8
Reset High
7
NC
6
NC
5
Timer Control*
* This pin must be connected to Vcc or Gnd
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