Nexperia

74HC4040; 74HCT4040

12-stage binary ripple counter

6.2. Pin description

Table 2. Pin description

Symbol

Pin

Description

Q11

1

output 11

Q5

2

output 5

Q4

3

output 4

Q6

4

output 6

Q3

5

output 3

Q2

6

output 2

Q1

7

output 1

GND

8

ground (0 V)

Q0

9

output 0

CP

10

clock input (HIGH-to-LOW, edge-triggered)

MR

11

master reset input (active HIGH)

Q8

12

output 8

Q7

13

output 7

Q9

14

output 9

Q10

15

output 10

VCC

16

positive supply voltage

7. Functional description

7.1. Function table

Table 3. Function table

H = HIGH voltage level; L = LOW voltage level; X = don’t care;

↑ = LOW-to-HIGH clock transition; ↓ = HIGH-to-LOW clock transition.

Input

Output

CP

MR

Q0 to Q11

↑

L

no change

↓

L

count

X

H

L

74HC_HCT4040

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Product data sheet

Rev. 7 — 26 May 2021

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