SL74LS157
AC ELECTRICAL CHARACTERISTICS (TA=25°C, VCC = 5.0 V, CL = 15 pF, RL = 2 kW, tr =15
ns, tf = 6.0 ns)
Symbol
Parameter
Min
Max
14
Unit
ns
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
Propagation Delay, Input A or B to Output Y
Propagation Delay, Input A or B to Output Y
Propagation Delay, Select to Output Y
14
ns
23
ns
Propagation Delay, Select to Output Y
27
ns
Propagation Delay, Output Enable to Output Y
Propagation Delay, Output Enable to Output Y
20
ns
21
ns
Figure 1. Switching Waveforms
Figure 2. Switching Waveforms
NOTES A. CL includes probe and jig capacitance.
B. All diodes are 1N916 or 1N3064.
Figure 3. Test Circuit
System Logic
SLS
SLS [ SYSTEM LOGIC SEMICONDUCTOR ]
