General-Purpose Timers

The Maxim ICM7555 and ICM7556 are respectively single and dual general-purpose RC timers capable of generating accurate time delays or frequencies. The primary feature is an extremely low supply current, making this device ideal for battery-powered systems. Additional features include low THRESHOLD, active-low TRIGGER, and active-low RESET currents, a wide operating supply voltage range, and improved performance at high frequencies.

These CMOS low-power devices offer significant performance advantages over the standard 555 and 556 bipolar timers. Low-power consumption, combined with the virtually nonexistent current spike during output transitions, make these timers the optimal solution in many applications.

Applications

* Missing Pulse Detector * Precision Timing * Pulse Generator * Pulse Position Modulation * Pulse-Width Modulation * Sequential Timing * Time Delay Generation

* Improved 2nd Source (See 4th Page for Maxim Advantage)

* Wide Supply Voltage Range: 2V to 18V

* No Crowbarring of Supply During Output Transition

* Adjustable Duty Cycle

* Low THRESHOLD, Active-Low TRIGGER, and Active-Low RESET Currents

* TTL Compatible

* Monolithic, Low-Power CMOS Design