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74HC590

Part Number	74HC590
Manufacturer	nexperia
Description	8-bit binary counter
Published	Mar 27, 2018
Detailed Description	74HC590 8-bit binary counter with output register; 3-state Rev. 4 — 14 March 2022 Product data sheet 1. General desc...
Datasheet	74HC590 PDF File

Overview

74HC590 8-bit binary counter with output register; 3-state Rev.
4 — 14 March 2022 Product data sheet 1.
General description The 74HC590 is an 8-bit binary counter with a storage register and 3-state outputs.
The storage register has parallel (Q0 to Q7) outputs.
The binary counter features master reset counter (MRC) and count enable (CE) inputs.
The counter and storage register have separate positive edge triggered clock (CPC and CPR) inputs.
If both clocks are connected together, the counter state is always one count ahead of the register.
Internal circuitry prevents clocking from the clock enable.
A ripple carry output (RCO) is provided for cascading.
Cascading is accomplished by connecting RCO of the first stage to CE of the second stage.
Cascading for larger count chains can be accomplished by connecting RCO of each stage to the counter clock (CPC) input of the following stage.
Inputs include clamp diodes.
This enables the use of current limiting resistors to interface inputs to...

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