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74HC191D

Part Number	74HC191D
Manufacturer	nexperia
Description	Presettable synchronous 4-bit binary up/down counter
Published	Dec 26, 2020
Detailed Description	74HC191 Presettable synchronous 4-bit binary up/down counter Rev. 6 — 8 September 2021 Product data sheet 1. General...
Datasheet	74HC191D PDF File

Overview

74HC191 Presettable synchronous 4-bit binary up/down counter Rev.
6 — 8 September 2021 Product data sheet 1.
General description The 74HC191 is an asynchronously presettable 4-bit binary up/down counter.
It contains four master/slave flip-flops with internal gating and steering logic to provide asynchronous preset and synchronous count-up and count-down operation.
Asynchronous parallel load capability permits the counter to be preset to any desired value.
Information present on the parallel data inputs (D0 to D3) is loaded into the counter and appears on the outputs when the parallel load (PL) input is LOW.
This operation overrides the counting function.
Counting is inhibited by a HIGH l...

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