PST993

PST993 MITSUMI | Alldatasheet

Document overview

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Technical content

Features

1. Voltage detect precision V S±5% max. 2. Low consumption current I CCH=300µA typ. ICCL=250µA typ. 3. Low operating threshold voltage 0.65V typ. 4. Hysteresis voltage is provided as detect voltage 50mV typ. 5. Large output current at the time ON 15mA typ. 6. Detect voltage rank 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 123 TO-92A

1 VCC

2 GND

3 VOUT

MITSUMI System Reset PST993, 994 Absolute Maximum Ratings (Ta=25° C) Electrical Characteristics (Ta=25° C) (The unit of resistance is Ω unless otherwise indicated.) Equivalent Circuit Diagram PST993 PST994 Item Symbol Ratings Units Storage temperature TSTG -40~+125 ° C Operating temperature TOPR -20~+75 ° C Supply voltage VCC -0.3~10 V Allowable loss Pd 300 mW Item Symbol Measurement Measurement conditions Min. Typ. Max. UnitsCircuit PST993C 4.27 4.5 4.73 PST993D 4.00 4.2 4.40 PST993E 3.70 3.9 4.10 PST993F 3.42 3.6 3.78 Detection Voltage VS 1 RL=∞ PST993G 3.13 3.3 3.47 V VCC=H L PST993H 2.94 3.1 3.26 PST993I 2.75 2.9 3.05 PST993J 2.56 2.7 2.84 PST993K 2.37 2.5 2.63 PST993L 2.18 2.3 2.42 Hysteresis Voltage VS 1R L=∞ , VCC=L H L 30 50 100 mV Detection Voltage Temperature Coefficient VS/ T 1 R L=∞ , Ta=-20~+75° C ±0.01 %/ ° C Low Level Output Voltage VOL 1V CC=Vs min. -0.05V, RL=1k 0.1 0.4 V Output Constant Current IOC1V O=2.5V, VCC=5V, RL=∞ -40 -25 -17 µA Circuit Current at ON Time ICCL 1V CC=Vs min. -0.05V, RL=∞ 250 400 µA Circuit Current at OFF Time ICCH 1V CC=Vs typ. /0.85V, RL=∞ 300 500 µA "H" Transmission Delay Time tpLH 2 C L=100pF 20 *1 µS "L" Transmission Delay Time tpHL 2 C L=100pF 1 µS Operating Threshold Voltage VOPL1 R L=4.7k, VOL <= 0.4V 0.65 0.85 V Output Current at ON Time 1 IOL1 1 RL=∞ , VO=0.4V VCC=VS min. -0.05V 61 5 m A Output Current at ON Time 2 IOL2 1 Ta=-20~+75° C, RL=∞ VO=0.4V, VCC=Vs min. -0.05V 4m A *Do not apply onto the OUT terminal any voltage higher than that at the VCC terminal. (*1) The tpLH is a function of the charging time of CL by output constant current. The delay time of this IC is about 1 µS.

MITSUMI System Reset PST993, 994 Absolute Maximum Ratings (Ta=25° C) Electrical Characteristics (Ta=25° C) (The unit of resistance is Ω unless otherwise indicated.) Item Symbol Ratings Units Storage temperature TSTG -40~+125 ° C Operating temperature TOPR -20~+75 ° C Supply voltage VCC -0.3~10 V Allowable loss Pd 300 mW Item Symbol Measurement Measurement conditions Min. Typ. Max. UnitsCircuit PST994C 4.27 4.5 4.73 PST994D 4.00 4.2 4.40 PST994E 3.70 3.9 4.10 PST994F 3.42 3.6 3.78 PST994I 2.75 2.9 3.05 PST994J 2.56 2.7 2.84 PST994K 2.37 2.5 2.63 PST994L 2.18 2.3 2.42 Hysteresis Voltage Vs 1 R L=1k, VCC=L H L 30 50 100 mV Detection Voltage Temperature Coefficient Vs/ T 1 R L=1k, Ta=-20~+75° C ±0.01 %/ ° C Low Level Output Voltage VOL 1V CC=Vs min. -0.05V, RL=1k 0.1 0.4 V Output Leakage Current IOH 1V CC=10V 0.1 µA Circuit Current at ON Time ICCL 1V CC=Vs min. -0.05V, RL=∞ 250 400 µA Circuit Current at OFF Time ICCH 1V CC=Vs typ./0.85V, RL=∞ 300 500 µA "H" Transmission Delay Time tpLH 2 C L=100pF, RL=4.7k 1 µS "L" Transmission Delay Time tpHL 2 C L=100pF, RL=4.7k 1 µS Operating Threshold Voltage VOPL1 R L=4.7k, VOL <= 0.4V 0.65 0.85 V Output Current at ON Time 1 IOL1 1 VO=0.4V VCC=Vs min. -0.05V 61 5 m A Output Current at ON Time 2 IOL2 1 Ta=-20~+75° C VO=0.4V, VCC=Vs min.-0.05V 4m A *Do not apply onto the OUT terminal any voltage higher than that at the VCC terminal. (*1) The tpLH is a function of the charging time of CL by output constant current. The delay time of this IC is about 1 µS.

MITSUMI System Reset PST993, 994 -20-1 00 1 02 03 04 05 06 07 030 100 Ta (°C) VOL (mV) -20-1 00 1 02 03 04 05 06 07 0 100 Ta (°C) VS (mV) VS vs. Ta V OL vs. Ta -20-1 00 1 02 03 04 05 06 07 0 160 200 240 280 320 360 400 440 Ta (°C) ICCH (µA) PST994 PST993 ICCH vs. Ta -20-1 00 1 02 03 04 05 06 07 0 -40 -38 -36 -34 -32 -30 -28 -26 -24 -22 -20 Ta (°C) IOC (µA) IOC vs. Ta (PST993) -20-1 00 1 02 03 04 05 06 07 00 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 Ta (°C) VopL (V) -20-1 00 1 02 03 04 05 06 07 0 4100 4120 4140 4160 4180 4200 4220 4240 4260 4280 4300 Ta (°C) VS (mV) VS vs. Ta V OpL vs. Ta Characteristics Equivalent Circuit Diagram * Since PST993 incorporates a constant current load, the pull-up resistance is not necessary.