HD74LS194A
Absolute Maximum Ratings
Item
Supply voltage
Input voltage
Power dissipation
Storage temperature
Symbol
V
CC
V
IN
P
T
Tstg
Ratings
7
7
400
–65 to +150
Unit
V
V
mW
°C
Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.
Recommended Operating Conditions
Item
Supply voltage
Output current
Operating temperature
Clock frequency
Clock pulse width
Clear pulse width
Mode Control
Setup time
A, B, C, D, R, L
CLR
(inactive state)
t
su
Symbol
V
CC
I
OH
I
OL
T
opr
ƒ
clock
t
w (CK)
t
w (CLR)
Min
4.75
—
—
–20
0
20
20
30
20
25
t
h
0
Typ
5.00
—
—
25
—
—
—
—
—
—
—
Max
5.25
–400
8
75
25
—
—
—
—
—
—
Unit
V
µA
mA
°C
MHz
ns
ns
ns
ns
ns
ns
Hold time
Electrical Characteristics
(Ta = –20 to +75 °C)
Item
Input voltage
Symbol
V
IH
V
IL
V
OH
Output voltage
V
OL
I
IH
I
IL
I
I
Short-circuit output
current
Supply current**
Input clamp voltage
I
OS
I
CC
V
IK
min.
2.0
—
2.7
—
—
—
—
—
–20
—
—
typ.*
—
—
—
—
—
—
—
—
—
15
—
max.
—
0.8
—
0.4
0.5
20
–0.4
0.1
–100
23
–1.5
Unit
V
V
V
V
µA
mA
mA
mA
mA
V
Condition
V
CC
= 4.75 V, V
IH
= 2 V, V
IL
= 0.8 V,
I
OH
= –400
µA
I
OL
= 4 mA
V
CC
= 4.75 V, V
IH
= 2 V,
V
IL
= 0.8 V
I
OL
= 8 mA
V
CC
= 5.25 V, V
I
= 2.7 V
V
CC
= 5.25 V, V
I
= 0.4 V
V
CC
= 5.25 V, V
I
= 7 V
V
CC
= 5.25 V
V
CC
= 5.25 V
V
CC
= 4.75 V, I
IN
= –18 mA
Input current
Notes: * V
CC
= 5 V, Ta = 25°C
** With all outputs open, inputs A through D grounded, and 4.5 V applied to S
0
, S
1
, clear and the serial inputs,
I
CC
is tested with a momentary GND, then 4.5 V, applied to clock.
Switching Characteristics
(V
CC
= 5 V, Ta = 25°C)
Item
Maximum clock frequency
Propagation delay time
Symbol
ƒ
max
t
PHL
t
PLH
t
PHL
Inputs
Clear
Clock
Clock
Outputs
min.
25
—
—
—
typ.
36
19
14
17
max.
—
30
22
26
Unit
MHz
ns
ns
ns
Condition
C
L
= 15 pF,
R
L
= 2 kΩ
Q
Rev.3.00, Jul.15.2005, page 3 of 7
RENESAS [ RENESAS TECHNOLOGY CORP ]
