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74LS90 Decade Counter IC (7490 IC) DIP-14 Package

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Description

The 74LS90 is a TTL logic decade counter IC that counts from 0 to 9 in binary and is often used in digital counters and timing applications. It features asynchronous reset and preset capabilities, allowing for easy initialization and control of the counting sequence.

Features

  • Decade counter: Counts in decimal from 0 to 9, providing a divide-by-10 counter function.
  • Binary outputs: Outputs count values in binary, from 0000 to 1001 (0 to 9 in decimal).
  • Asynchronous reset and preset: Allows for immediate resetting or presetting of the counter values regardless of the clock signal.
  • Carry-out and borrow outputs: Provides carry-out (CO) and borrow (BO) signals for cascading counters or interfacing with other digital logic.
  • Standard TTL logic levels: Compatible with TTL logic families.

Specifications

  • Package Type: DIP-14 (Dual In-line Package)
  • Number of Stages: 4 (4-bit binary counter)
  • Supply Voltage (Vcc): 4.75V to 5.25V
  • Maximum Clock Frequency: 50 MHz (typical at 5V)
  • Propagation Delay Time: 20 ns (typical at 5V)
  • Output Drive Current: ±8 mA (source/sink)
  • Operating Temperature: 0°C to 70°C

Note

* Product Images are shown for illustrative purposes only and may differ from actual product

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