HD74HC162P 查看數據表（PDF） - Renesas Electronics

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HD74HC162P

Synchronous Decade Counter (Direct Clear)/Synchronous 4-bit Binary Counter (Direct Clear)/Synchronous Decade Counter (Synchronous Clear)/Synchronous 4-bit Binary Counter (Synchronous Clear)

Renesas Electronics 

HD74HC160, HD74HC161, HD74HC162, HD74HC163

Function Table

Count Enable/Disable

Load

H

L

X

X

X

H : High level

Control Inputs

Enable P

Enable T

H

H

H

H

L

H

H

L

L

L

L : Low level X : Irrelevant

QA to QD

Count

No count

No count

No count

No count

Test Circuit

Measurement point

Result at Outputs

Ripple Carry Output

High when QA to QD are maximum

High when QA to QD are maximum

L

L

CL*

Note: CL includes the probe and fig capacitance.

Rev.2.00, Oct 11, 2005 page 11 of 14

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