ICM7555CBA

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1. Description

ICM7555CBA are CMOS RC timers that provide Performance is significantly higher than the standard SE/NE 555/6 and 355 timers, at the same time Directly replace these devices in most applications. Improved parameters include low supply current, wide Operating power supply voltage range, low threshold, TRIGGER and RESET current, no crowbarring Supply current during output conversion, higher frequency Performance without decoupling CONTROL Voltage stable operation. Specifically, ICM7555 and ICM7556 are stable The controller can generate accurate time delay or frequency. ICM7556 is dual ICM7555, two of them Timers run independently of each other, only shared V + and GND. In one-shot mode, each pulse width The circuit is precisely controlled by an external resistor and Capacitor. For unstable operation as an oscillator, free Both operating frequency and duty cycle are accurate It is controlled by two external resistors and a capacitor. Not like Conventional bipolar SE/NE 555/6 equipment, CONTROL The VOLTAGE terminal does not need to be decoupled from the capacitor. Circuit triggers and resets on falling (negative) Waveform, the output inverter can generate or absorb The current is large enough to drive a TTL load, or provide the minimum current Offset to drive CMOS load.

2. Features

    1. Exact Equivalent in Most Cases for SE/NE555/556 or TLC555/556

    2. Low Supply Current

        - ICM7555：60μA

        - ICM7556：120μA

    3. Extremely Low Input Currents：20pA

    4. High Speed Operation：1MHz

    5. Guaranteed Supply Voltage Range： 2V to 18V

    6. Temperature Stability ：0.005%/°C at +25°C

    7. Normal Reset Function - No Crowbarring of Supply During Output Transition

    8. Can be Used with Higher Impedance Timing Elements than Regular 555/6 for Longer RC Time Constants

    9. Timing from Microseconds through Hours

  10. Operates in Both Astable and Monostable Modes

  11. Adjustable Duty Cycle

  12. High Output Source/Sink Driver can Drive TTL/CMOS

  13. Outputs have Very Low Offsets, HI and LO

  14. Pb-Free Plus Anneal Available (RoHS Compliant)

3. Applications

    1. Precision Timing

    2. Pulse Generation

    3. Sequential Timing

    4. Time Delay Generation

    5. Pulse Width Modulation

    6. Pulse Position Modulation

    7. Missing Pulse Detector

4. Pin configuration