Datasheet
SDAS212A − DECEMBER 1983 − REVISED DECEMBER 1994
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251−1443
Shift Left
Clear
InhibitShift 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
Q
A
Q
B
Q
C
Q
D
Figure 1. Typical Clear, Load, Right-Shift, and Clear Sequences
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage, V
CC
7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, V
I
7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
: SN54AS194 −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.










