Part ICM7224
Description 41/2 Digit LCD Display Counter
Manufacturer Intersil
Size 576.28 KB
Intersil
ICM7224

Overview

The ICM7224 device is a high-performance, CMOS 41/2 digit counter, including decoder, output latch, display driver, count inhibit, leading zero blanking, and reset circuitry. The counter section provides direct static counting, guaranteed from DC to 15MHz, using a 5V ±10% supply over the operating temperature range.

  • The display drivers are not of the multiplexed type and each display segment has its own individual drive pin, providing high quality display outputs. Features
  • High Frequency Counting - Guaranteed 15MHz, Typically 25MHz at 5V
  • Low Power Operation - Typically Less Than 100µW Quiescent
  • STORE and RESET Inputs Permit Operation as Frequency or Period Counter
  • True COUNT INHIBIT Disables First Counter Stage
  • CARRY Output for Cascading Four-Digit Blocks
  • Schmitt-Trigger on the COUNT Input Allows Operation in Noisy Environments or with Slowly Changing Inputs
  • Leading Zero Blanking INput and OUTput for Correct Leading Zero Bl