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HD74HC191 - Synchronous Up/Down 4-bit Binary Counter

Download the HD74HC191 datasheet PDF (HD74HC190 included). The manufacturer datasheet provides complete specifications, pinout details, electrical characteristics, and typical applications for synchronous up/down 4-bit binary counter.

Description

The HD74HC190 is a 4-bit decade counter and the HD74HC191 is a 4-bit binary counter.

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

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (HD74HC190-Renesas.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number HD74HC191
Manufacturer Renesas
File Size 342.29 KB
Description Synchronous Up/Down 4-bit Binary Counter
Datasheet download datasheet HD74HC191 Datasheet

📁 Similar Datasheet

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Other Datasheets by Renesas
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  • HD74HC195 - 4-bit Parallel-Access Shift Register
  • HD74HC10 - Triple 3-input NAND Gates
  • HD74HC107 - Dual J-K Flip-Flops
  • HD74HC108 - Dual J-K Flip-Flops

Full PDF Text Transcription

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HD74HC190, HD74HC191 Synchronous Up/Down Decade Counter (Single Clock Line) Synchronous Up/Down 4-bit Binary Counter (Single Clock Line) REJ03D0587-0300 Rev.3.00 Jan 31, 2006 Description The HD74HC190 is a 4-bit decade counter and the HD74HC191 is a 4-bit binary counter. Synchronous counting operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincident with each other when so instructed by the steering logic. This mode of operation eliminates the output counting spikes normally associated with asynchronous (ripple clock) counters. The outputs of the four flip-flops are triggered on a low-to-high-level transition of the clock input if the Enable G input is low. A high at Enable G inhibits counting.
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