74HC191 - 4-BIT SYNCHRONOUS UP/DOWN BINARY COUNTERS

Texas Instruments

Datasheet Details

Part number	74HC191
Manufacturer	Texas Instruments
File Size	1.20 MB
Description	4-BIT SYNCHRONOUS UP/DOWN BINARY COUNTERS
Datasheet	74HC191 Datasheet

General Description

/ordering information The ’HC191 devices are 4-bit synchronous, reversible, up/down binary counters.

Synchronous counting operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincident with each other when instructed by the steering logic.

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

Overview

SN54HC191, SN74HC191 4ĆBIT SYNCHRONOUS UP/DOWN BINARY COUNTERS D Wide Operating Voltage Range of 2 V to 6 V D Outputs Can Drive Up To 10 LSTTL Loads D Low Power Consumption, 80-µA Max ICC D Typical tpd = 13 ns D ±4-mA.

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