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74LS393 - Dual 4-Bit Binary Counter

Datasheet Summary

Description

Each of these monolithic circuits contains eight masterslave flip-flops and additional gating to implement two individual four-bit counters in a single package.

The DM74LS393 comprises two independent four-bit binary counters each having a clear and a clock input.

Features

  • s Dual version of the popular DM74LS93 s DM74LS393 dual 4-bit binary counter with individual clocks s Direct clear for each 4-bit counter s Dual 4-bit versions can significantly improve system densities by reducing counter package count by 50% s Typical maximum count frequency 35 MHz s Buffered outputs reduce possibility of collector commutation Ordering Code: Order Number DM74LS393M DM74LS373N Package Number M14A N14A Package.

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Datasheet Details

Part number 74LS393
Manufacturer Fairchild Semiconductor
File Size 56.46 KB
Description Dual 4-Bit Binary Counter
Datasheet download datasheet 74LS393 Datasheet
Additional preview pages of the 74LS393 datasheet.

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Full PDF Text Transcription

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DM74LS393 Dual 4-Bit Binary Counter August 1986 Revised March 2000 DM74LS393 Dual 4-Bit Binary Counter General Description Each of these monolithic circuits contains eight masterslave flip-flops and additional gating to implement two individual four-bit counters in a single package. The DM74LS393 comprises two independent four-bit binary counters each having a clear and a clock input. N-bit binary counters can be implemented with each package providing the capability of divide-by-256. The DM74LS393 has parallel outputs from each counter stage so that any submultiple of the input count frequency is available for system-timing signals.
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