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PST993E

Description
System Reset
File Size64KB,4 Pages
ManufacturerMinebeaMitsumi
Websitehttp://www.nmbtc.com
Download Datasheet View All

PST993E Overview

System Reset

MITSUMI
System Reset PST993, 994
System Reset
Monolithic IC PST993, 994
Outline
The function of this IC is to accurately reset systems after detecting the supply voltage at the time of
switching power on and instantaneous power off in various CPU and other logic systems. Further, this IC can
be offered at low cost because it is designed to be simplified allowing for the replacement from reset circuit of
discrete configuration.
Features
1. Voltage detect precision
2. Low consumption current
3. Low operating threshold voltage
4. Hysteresis voltage is provided as detect voltage
5. Large output current at the time ON
6. Detect voltage rank
V
S
±5% max.
I
CCH
=300µA typ. I
CCL
=250µA typ.
0.65V typ.
50mV typ.
15mA typ.
PST993 C : 4.5V
H : 3.1V
D : 4.2V
I : 2.9V
E : 3.9V
J : 2.7V
F : 3.6V
K : 2.5V
G : 3.3V
L : 2.3V
(Same ranks for PST994 too)
7. Output form
PST993 : Constant current load built-in
PST994 : Open collector
Packages
TO-92A (PST993 , PST994 )
contains detection voltage rank.
*
Applications
1. Reset circuits for microcomputers, CPU and MPU.
2. Reset circuit for logic circuitry.
3. Level detecting circuit.
Pin Assignment
1
2
3
V
CC
GND
V
OUT
1
2
3
TO-92A
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