’LS156 Switching Characteristics
at V
CC
e
5V and T
A
e
25
§
C (See Section 1 for Test Waveforms and Output Load)
From (Input)
R
L
e
2kX
Symbol Parameter
To (Output)
C
L
e
15 pF C
L
e
50 pF Units
Min Max Min Max
t
PLH
Propagation Delay Time A, B, C2, G1
28 53 ns
Low to High Level Output or G2 to Y
t
PHL
Propagation Delay Time A, B, C2, G1
33 43 ns
High to Low Level Output or G2 to Y
t
PLH
Propagation Delay Time A or B
28 53 ns
Low to High Level Output to Y
t
PHL
Propagation Delay Time A or B
33 43 ns
High to Low Level Output to Y
t
PLH
Propagation Delay Time C1
28 53 ns
Low to High Level Output to Y
t
PHL
Propagation Delay Time C1
34 43 ns
High to Low Level Output to Y
Logic Diagram
TL/F/6395–2
4
