M74HC294 Ver la hoja de datos (PDF) - STMicroelectronics

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M74HC294

PROGRAMMABLE DIVIDER/TIMER

STMicroelectronics 

M74HC294

INPUT AND OUTPUT EQUIVALENT CIRCUIT

(TOTEM POLE OUTPUT)

INPUT AND OUTPUT EQUIVALENT CIRCUIT

(OPEN DRAIN OUTPUT)

PIN DESCRIPTION

PIN No

4, 5

1, 2, 14, 15

3

11

7

8

16

TRUTH TABLE

CLR

L

H

H

H

H

SYMBOL

CLK1, CLK2

A to E

TP

CLR

Q

GND

Vcc

NAME AND FUNCTION

Input Clock

Program Inputs

Test Point Outputs

Clear (Active LOW)

Output

Ground (0V)

Positive Supply Voltage

CLK1

X

L

H

X

CLK2

X

L

X

H

Q OUTPUT MODE

CLEARED TO L

UP COUNT

NO CHANGE

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