74HC4020 查看數據表（PDF） - NXP Semiconductors.

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74HC4020

14-stage binary ripple counter

NXP Semiconductors. 

Nexperia

74HC4020; 74HCT4020

14-stage binary ripple counter

7. Functional description

Table 3. Function table

Input

CP

MR



L



L

X

H

Output

Q0, Q3 to Q13

no change

count

L

[1] H = HIGH voltage level; L = LOW voltage level; X = don’t care;  = LOW-to-HIGH clock transition;  = HIGH-to-LOW clock transition.

7.1 Timing diagram

&3LQSXW

05LQSXW

4

4

4

4

4

4

4

4

4

4

4

4

Fig 7. Timing diagram

              

DDO

74HC_HCT4020

Product data sheet

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

Rev. 6 — 3 February 2016

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