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PST994K Datasheet(PDF) 1 Page - Mitsumi Electronics, Corp. |
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PST994K Datasheet(HTML) 1 Page - Mitsumi Electronics, Corp. |
1 / 4 page 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 VS±5% max. 2. Low consumption current ICCH=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 12 3 TO-92A 1 VCC 2 GND 3 VOUT |
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