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PST993

ETC
Part Number PST993
Manufacturer ETC
Description System Reset
Published May 17, 2005
Detailed Description MITSUMI System Reset PST993, 994 System Reset Monolithic IC PST993, 994 Outline The function of this IC is to accurat...
Datasheet PDF File PST993 PDF File

PST993
PST993

Overview
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 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) 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 VCC GND VOUT 1 2 3 TO-92A MITSUMI System Reset PST993, 994 Equivalent Circuit Diagram PST993 PST994 Absolute Maximum Ratings Item Storage temperature Operating temperature Supply voltage Allowable loss (Ta=25°C) Symbol TSTG TOPR VCC Pd Ratings -40~+125 -20~+75 -0.
3~10 300 Units °C °C V mW Electrical Characteristics Item (Ta=25°C) (The unit of resistance is Ω unless otherwise indicated.
) Measurement Circuit Measurement conditions PST993C PST993D PST993E PST993F PST993G RL=∞ VCC=H L PST993H PST993I PST993J PST993K PST993L RL=∞, VCC=L H L RL=∞, Ta=-20~+75°C VCC=Vs min.
-0.
05V, RL=1k VO=2.
5V, VCC=5V, RL=∞ VCC=Vs min.
-0.
05V, RL=∞ VCC=Vs typ.
/0.
85V, RL=∞ CL=100pF Min.
Typ.
Max.
Units 4.
27 4.
00 3.
70 3.
42 3.
13 2.
94 2.
75 2.
56 2.
37 2.
18 30 4.
5 4.
2 3.
9 3.
6 3.
3 3.
1 2.
9 2.
7 2.
5 2.
3 50 ±0.
01 0.
1 -25 250 300 20 1 1 0.
65 0.
4 -17 400 500 ...


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