74HC4020D Просмотр технического описания (PDF) - Nexperia B.V. All rights reserved

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74HC4020D

14-stage binary ripple counter

Nexperia B.V. All rights reserved 

Nexperia

7. Functional description

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

CP

MR

↑

L

↓

L

X

H

74HC4020; 74HCT4020

14-stage binary ripple counter

Output

Q0, Q3 to Q13

no change

count

L

7.1. Timing diagram

CP input

MR input

Q0

Q3

Q4

Q5

Q6

Q7

Q8

Q9

Q10

Q11

Q12

Q13

Fig. 7. Timing diagram

1 2 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384

001aal207

74HC_HCT4020

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 7 — 18 June 2020

© Nexperia B.V. 2020. All rights reserved

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