HD74LS161AFP 查看數據表（PDF） - Renesas Electronics

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产品描述 (功能)

生产厂家

HD74LS161AFP

Synchronous 4-bit Binary Counter (direct clear)

Renesas Electronics 

HD74LS161A

Timing Method

Clock

Load

Data

Outputs

A to D

Enable

P or T

tw (CK)

1.3V

1.3V

tsu th

1.3V

1.3V

tsu th

1.3V

1.3V

3V

1.3V

0V

3V

0V

3V

0V

tsu

th

3V

1.3V 1.3V

0V

Testing Method

Test Circuit

4.5V

P.G.

Zout = 50Ω

Input

P.G.

Zout = 50Ω

Input

VCC

QA

Load

CK

QA

A

B

C

QB

D

QC

P

T

QD

Ripple

CLR Carry

RL Load circuit 1

CL

QB

Same as Load Circuit 1.

QC

Same as Load Circuit 1.

QD

Same as Load Circuit 1.

Ripple

Carry

Same as Load Circuit 1.

Notes: 1. CL includes probe and jig capacitance.

2. All diodes are 1S2074(H).

Rev.2.00, Feb.18.2005, page 5 of 10

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