PST994G Ver la hoja de datos (PDF) - Mitsumi

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Fabricante

PST994G

System Reset

Mitsumi 

MITSUMI

System Reset

Monolithic IC PST993, 994

System Reset 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

7. Output form

PST993 : Constant current load built-in

PST994 : Open collector

VS±5% max.

ICCH=300µA typ. ICCL=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)

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

123

TO-92A

1

VCC

2

GND

3

VOUT

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