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74F161A - SYNCHRONOUS 4-BIT BINARY COUNTER

Description

This synchronous, presettable, 4-bit binary counter has internal carry look-ahead circuitry for use in high-speed counting designs.

Features

  • a fully independent clock circuit. Changes at ENP, ENT, or LOAD that modify the operating mode have no effect on the contents of the counter until clocking occurs. The function of the counter (whether enabled, disabled, loading, or counting) is dictated solely by the conditions meeting the setup and hold times.

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Datasheet Details

Part number 74F161A
Manufacturer Texas Instruments
File Size 687.57 KB
Description SYNCHRONOUS 4-BIT BINARY COUNTER
Datasheet download datasheet 74F161A Datasheet
Additional preview pages of the 74F161A datasheet.

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Full PDF Text Transcription

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SN74F161A SYNCHRONOUS 4-BIT BINARY COUNTER SDFS056B – MARCH 1987 – REVISED AUGUST 2001 D Internal Look-Ahead Circuitry for Fast Counting D, DB, OR N PACKAGE (TOP VIEW) D Carry Output for N-Bit Cascading D Fully Synchronous Operation for Counting CLR 1 CLK 2 16 VCC 15 RCO description This synchronous, presettable, 4-bit binary counter has internal carry look-ahead circuitry for use in high-speed counting designs. A3 B4 C5 D6 ENP 7 14 QA 13 QB 12 QC 11 QD 10 ENT Synchronous operation is provided by having all GND 8 9 LOAD flip-flops clocked simultaneously so that the outputs change coincident with each other when so instructed by the count-enable (ENP, ENT) inputs and internal gating.
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