General Purpose Timers

The ICM7555 and ICM7556 are CMOS RC timers providing significantly improved performance over the standard SE/NE 555/6 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/°C at +25°C

? 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

? Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

? Precision Timing

? Pulse Generation

? Sequential Timing

? Time Delay Generation

? Pulse Width Modulation

? Pulse Position Modulation

? Missing Pulse Detector