HD74LS194A
Testing Table
Item
ƒ
max
t
PLH
t
PHL
From input to output
right-shift
left-shift
Clear→Q
Clock→Q
Inputs
CLR
4.5V
4.5V
IN
4.5V
4.5V
S
1
4.5V
GND
4.5V
4.5V
4.5V
S
0
GND
4.5V
4.5V
GND
GND
CK
IN
IN
IN
IN
IN
L
4.5V
IN
GND
4.5V
IN
R
IN
4.5V
GND
IN
4.5V
A
GND
GND
4.5V
GND
GND
B
GND
GND
4.5V
GND
GND
C
GND
GND
4.5V
GND
GND
D
GND
GND
4.5V
GND
GND
Item
ƒ
max
t
PLH
t
PHL
From input to output
right-shift
left-shift
Clear→Q
Clock→Q
Outputs
Q
A
OUT
OUT
OUT
OUT
OUT
Q
B
OUT
OUT
OUT
OUT
OUT
Q
C
OUT
OUT
OUT
OUT
OUT
Q
D
OUT
OUT
OUT
OUT
OUT
Waveforms 1
(ƒ
max
, CK→Q)
t
TLH
t
THL
t
n
t
n
+1
t
n
t
n
+1
3V
1.3V
t
h
t
THL
L, R
t
PHL
1.3V
90%
1.3V
10%
t
PLH
t
PHL
t
su
1.3V
t
h
t
TLH
90%
1.3V
t
PLH
V
OH
Q
1.3V
1.3V
1.3V
1.3V
V
OL
3V
0V
1.3V
0V
CK
10%
90%
90%
1.3V 1.3V 10%
t
w (CK)
t
su
10%
Notes:
1. Right-shift is measured with Q
A
at t
n + 1
, Q
B
at t
n + 2
, Q
C
at t
n + 3
, and Q
D
at t
n + 4
. Left-shift is
measured with Q
A
at t
n + 4
, Q
B
at t
n + 3
, Q
C
at t
n + 2
, and Q
D
at t
n + 1
.
Rev.3.00, Jul.15.2005, page 5 of 7
RENESAS [ RENESAS TECHNOLOGY CORP ]
