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DM7493A Datasheet Decade and Binary Counters

Manufacturer: National Semiconductor (now Texas Instruments)

Download the DM7493A datasheet PDF. This datasheet also includes the DM7490A variant, as both parts are published together in a single manufacturer document.

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Note: The manufacturer provides a single datasheet file (DM7490A-NationalSemiconductor.pdf) that lists specifications for multiple related part numbers.

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 90A and divideby-eight for the 93A All of these counters have a gated zero reset and the 90A 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 A symmetrical divide-by-ten count can be obtained from the 90A counters by connecting the QD output to the A input and applying the input count to the B input which gives a divide-by-ten square wave at output QA

Overview

DM5490 DM7490A DM7493A Decade and Binary Counters July 1992 DM5490 DM7490A DM7493A Decade and Binary Counters.

Key Features

  • Y Typical power dissipation 90A 145 m.

📁 Similar Datasheet

Brand Logo Part Number Description Manufacturer
Fairchild Semiconductor Logo DM7493A Decade and Binary Counters Fairchild Semiconductor

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