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DM74LS90N - Decade and Binary Counters

Download the DM74LS90N datasheet PDF (DM74LS90 included). The manufacturer datasheet provides complete specifications, pinout details, electrical characteristics, and typical applications for decade and binary counters.

Description

Each of these monolithic counters contains four masterslave flip-flops and additional gating to provide a divide-bytwo counter and a three-stage binary counter for which the count cycle length is divide-by-five for the DM74LS90.

Features

  • s Typical power dissipation 45 mW s Count frequency 42 MHz Ordering Code: Order Number Package Number Package.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (DM74LS90_National.pdf) that lists specifications for multiple related part numbers.

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Full PDF Text Transcription

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DM74LS90 Decade and Binary Counters August 1986 Revised March 2000 DM74LS90 Decade and Binary Counters General Description Each of these monolithic counters contains four masterslave flip-flops and additional gating to provide a divide-bytwo counter and a three-stage binary counter for which the count cycle length is divide-by-five for the DM74LS90. All of these counters have a gated zero reset and the DM74LS90 also has gated set-to-nine inputs for use in BCD nine’s complement applications. To use their maximum count length (decade or four bit binary), the B input is connected to the QA output. The input count pulses are applied to input A and the outputs are as described in the appropriate truth table.
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