M74HC4040RM13TR 查看數據表（PDF） - STMicroelectronics

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M74HC4040RM13TR

12 STAGE BINARY COUNTER

STMicroelectronics 

M74HC4040

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION

PIN No

9, 7, 6, 5, 3,

2, 4, 13, 12,

14, 15, 1

10

11

8

16

SYMBOL NAME AND FUNCTION

Q1 to Q12 Parallel Outputs

CLOCK

CLEAR

GND

Vcc

Clock Input (LOW to

HIGH, Edge Triggered)

Reset Inputs

Ground (0V)

Positive Supply Voltage

TRUTH TABLE

CLOCK

X

LOGIC DIAGRAM

CLEAR

H

L

L

OUTPUT STATE

ALL OUTPUTS = "L"

NO CHANGE

ADVANCE TO NEXT STATE

This logic diagram has not be used to estimate propagation delays

2/11

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