Datasheet4U Logo Datasheet4U.com

74F161A Datasheet Synchronous 4-bit Binary Counter

Manufacturer: Texas Instruments

Overview: 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.

General 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.

This mode of operation eliminates the output counting spikes that are normally associated with asynchronous (ripple-clock) counters.

Key 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.

74F161A Distributor & Price

Compare 74F161A distributor prices and check real-time stock availability from major suppliers. Prices and inventory may vary by region and order quantity.

Similar Datasheet

Brand Logo Part Number Description Manufacturer
National Semiconductor Logo 74F161A Synchronous Presettable Binary Counter National Semiconductor
NXP Logo 74F161A 4-bit binary counter NXP
Fairchild Semiconductor Logo 74F161A Synchronous Presettable Binary Counter Fairchild Semiconductor

More Datasheets from Texas Instruments

Part Number Description
74F10 TRIPLE 3-INPUT POSITIVE-NAND GATE
74F109 DUAL J-K POSITIVE-EDGE-TRIGGERED FLIP-FLOP
74F11 Triple 3-Input AND Gate
74F112 DUAL NEGATIVE-EDGE-TRIGGERED J-K FLIP-FLOP
74F138 3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
74F153 DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS
74F157A Quad 2-Input Multiplexer
74F158A Quadruple 2-Line To 1-Line Data Selectors/Multiplexers
74F175 Quad D-Type Flip-Flop
74F20 DUAL 4-INPUT POSITIVE-NAND GATES