General Purpose Timers

The ICM7555 and ICM7556 are CMOS RC timers providing significantly improved performance over the standard SE/NE555/6 and 355 timers, while at the same time being direct replacements for those devices in most applications.

FEATUREs
• Exact Equivalent in Most Cases for SE/NE555/556 or TLC555/556
• Low Supply Current
   - ICM7555 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60µA
   - ICM7556 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120µA
• Extremely Low Input Currents . . . . . . . . . . . . . . . . . 20pA
• High Speed Operation . . . . . . . . . . . . . . . . . . . . . . . 1MHz
• Guaranteed Supply Voltage Range . . . . . . . . . 2V to 18V
• Temperature Stability . . . . . . . . . . . . 0.005%/oC at 25oC
• Normal Reset Function - No Crowbarring of Supply During Output Transition
• Can be Used with Higher Impedance Timing Elements than Regular 555/6 for Longer RC Time Constants
• Timing from Microseconds through Hours
• Operates in Both Astable and Monostable Modes
• Adjustable Duty Cycle
• High Output Source/Sink Driver can Drive TTL/CMOS
• Outputs have Very Low Offsets, HI and LO

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