HD74HC193 Ver la hoja de datos (PDF) - Hitachi -> Renesas Electronics

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HD74HC193

Synchronous Up/Down Decade Counter (Dual Clock Line) Synchronous Up/Donw 4-bit Binary Counter (Dual Clock Line)

Hitachi -> Renesas Electronics 

HD74HC192/HD74HC193

HD74HC191

Illustrated below is the following sequence:

1. Clear outputs to zero.

2. Load (preset) to binary thirteen.

3. Count up to fourteen, fifteen, zero, one and two.

4. Count down to one, zero, borrow, fifteen and thirteen.

Clear

Load

A

B

Data

Inputs C

D

Count Up

Count Down

QA

QB

Outputs

QC

QD

Carry

Borrow

0

13

Clear Preset

14 15 0 1 2

Count Up

1 0 15 14 13

Count Down

6

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