MAXIM ICM7555IPA+

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, TRIGGER, and 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 non - existent current spike during output transitions, make these timers the optimal solution in many applications. Both the ICM7555 timer and the ICM7556 dual timer can be configured for either astable or monostable operation. In the astable mode the free running frequency and the duty cycle are controlled by two external resistors and one capacitor. Similarly, the pulse width in the monostable mode is precisely controlled by one external resistor and capacitor. The external component count is decreased when replacing a bipolar timer with the ICM7555 or ICM7556. The bipolar devices produce large crowbar currents in the output drive

• Improved 2nd Source!
• Wide Supply Voltage Range: 2 - 18V
• No Crowbarring of Supply During Output Transition
• Adjustable Duty Cycle
• Low THRESHOLD, TRIGGER and RESET Curents
• TTL Compatible
• Monolithic, Low Power CMOs Design
• Lower Supply Current
• Increased Output Source Current
• Guaranteed THRESHOLD, TRIGGER and RESET Input Currents
• Guaranteed Discharge Output Voltage
• Supply Current Guaranteed Over Temperature
• Significantly Improved ESD Protection

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