’151A Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Typ
Symbol
Parameter
Conditions
Min
Max
Units
(Note 1)
e
e
e b
e
b
1.5
V
V
Input Clamp Voltage
V
Min, I
Min, I
12 mA
V
V
I
CC
I
High Level Output
Voltage
V
V
Max
Min
OH
CC
OH
2.4
e
e
Max, V
IL
IH
e
e
V
OL
Low Level Output
Voltage
V
V
Min, I
Max
CC
OL
0.4
V
e
e
Min, V
Max
IH
IL
@
Input Current Max
e
e
I
I
V
CC
Max, V
5.5V
I
1
mA
Input Voltage
e
e
e
e
e
I
I
I
High Level Input Current
Low Level Input Current
V
V
V
Max, V
Max, V
Max
2.4V
0.4V
40
mA
IH
CC
CC
CC
I
b
1.6
mA
IL
I
b
b
b
b
Short Circuit
DM54
DM74
Max, (Note 3)
20
18
55
55
OS
mA
mA
Output Current
(Note 2)
e
CC
I
Supply Current
V
27
48
CC
e
e
25 C.
Note 1: All typicals are at V
5V, T
§
CC
Note 2: Not more than one output should be shorted at a time.
Note 3: I is measured with the strobe and data select inputs at 4.5V, all other inputs and outputs open.
A
CC
’151A Switching Characteristics
5V and T
e
e
A
at V
25 C (See Section 1 for Test Waveforms and Output Load)
§
CC
e
e
L
R
400X, C
15 pF
Max
L
From (Input)
To (Output)
Symbol
Parameter
Units
Min
t
t
t
t
t
t
t
t
t
t
t
t
Propagation Delay Time
Low to High Level Output
Select
PLH
PHL
PLH
PHL
PLH
PHL
PLH
PHL
PLH
PHL
PLH
PHL
38
30
26
30
33
30
21
25
24
24
14
14
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
(4 Levels) to Y
Propagation Delay Time
High to Low Level Output
Select
(4 Levels) to Y
Propagation Delay Time
Low to High Level Output
Select
(3 Levels) to W
Propagation Delay Time
High to Low Level Output
Select
(3 Levels) to W
Propagation Delay Time
Low to High Level Output
Strobe
to Y
Propagation Delay Time
High to Low Level Output
Strobe
to Y
Propagation Delay Time
Low to High Level Output
Strobe
to W
Propagation Delay Time
High to Low Level Output
Strobe
to W
Propagation Delay Time
Low to High Level Output
D0-D7
to Y
Propagation Delay Time
High to Low Level Output
D0-D7
to Y
Propagation Delay Time
Low to High Level Output
D0-D7
to W
Propagation Delay Time
High to Low Level Output
D0-D7
to W
4
NSC [ National Semiconductor ]
