HD74LS194AFP 查看數據表（PDF） - Renesas Electronics

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HD74LS194AFP

4-bit Bidirectional Universal Shift Register

Renesas Electronics 

HD74LS194A

Count Sequences

Clock

Mode

S0

Control

Inputs

S1

Clear

Serial

R

Inputs

L

A

H

Parallel B

L

Inputs

C

H

D

L

QA

QB

Outputs

QC

QD

Clear Load

Shift Right

Shift Left

Inhibit

Clear

Testing Method

Test Circuit

4.5V

P.G.

Zout = 50Ω

Input

VCC Output

CK

S0

S1

R

L

A

B

C

D

CLR

Load circuit 1

RL

QA

CL

Output

QB

Same as Load Circuit 1.

Output

QC

Same as Load Circuit 1.

Output

QD

Same as Load Circuit 1.

Notes: 1. CL includes probe and jig capacitance.

2. All diodes are 1S2074(H).

Rev.3.00, Jul.15.2005, page 4 of 7

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