SN54AS194, SN74AS194

4BIT BIDIRECTIONAL UNIVERSAL SHIFT REGISTERS

SDAS212A − DECEMBER 1983 − REVISED DECEMBER 1994

4

POST OFFICE BOX 655303

POST OFFICE BOX 1443

Shift Left

Clear

Inhibit

Shift Right

Clear Load

L

H

L

H

Mode-

Control

Inputs

Serial

Data

Inputs

Parallel

Data

Inputs

Outputs

CLK

S0

S1

CLR

R

L

A

B

C

D

QA

QB

QC

QD

Figure 1. Typical Clear, Load, Right-Shift, and Clear Sequences

7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

−55

°C to 125°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SN74AS194

0

°C to 70°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range

−65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.