ICM7218

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The Intersil ICM7218  (P/N 156-1621-00, 156-1622-00) is an 8-digit, 7-segment LED driver monolithic integrated circuit. It was second-sourced by Maxim and others.

The ICM7218A and ICM7218B variants take serial input data, the ICM7218C and ICM7218D parallel.

The ICM7218A and ICM7218C variants drive common-anode displays, the ICM7218B and ICM7218D common-cathode.

The 7218 contains an 8×8 RAM and can drive eight 7-segment digits with decimal points, or an array of up to 8×8 LEDs. It can decode input data, or address LEDs individually.

Part numbers

  • ICM7218A: 156-1621-00
  • ICM7218B: 156-1622-00

Used in

  • 7A42: A7U110 (ICM7218B, DVM display), A7U320 (ICM7218A, 29 LEDs), A8U105 (ICM7218B, eight dual-color LEDs)

Some instruments using part ICM7218

Instrument Manufacturer Class Model Description Introduced
7A42 Tektronix Plug-in 7A42 350 MHz four-channel logic triggered amplifier 1984
SG5010 Tektronix Plug-in SG5010 audio signal generator 1984

Data