IN74HCT157A
AC ELECTRICAL CHARACTERISTICS (VCC =5.0 V ± 10%, CL=50pF,Input tr=tf=6.0 ns)
Guaranteed Limit
≤85°C ≤125°C
Symbol
Parameter
Unit
25 °C
to
-55°C
tPLH, tPHL Maximum Propagation Delay, Input A or B to
Output Y (Figures 1and 4)
27
37
30
15
10
34
46
38
19
10
41
56
45
22
10
ns
ns
ns
ns
pF
tPLH, tPHL Maximum Propagation Delay , Select to
Output Y (Figures 2 and 4)
tPLH, tPHL Maximum Propagation Delay , Output Enable to
Output Y (Figures 3 and 4)
tTLH, tTHL Maximum Output Transition Time, Any Output
(Figures 1 and 4)
CIN
Maximum Input Capacitance
Power Dissipation Capacitance (Per Transceiver
Channel)
Typical @25°C,VCC=5.0 V
CPD
Used to determine the no-load dynamic power
consumption:
64
pF
PD=CPDVCC2f+ICCVCC
Figure 1. Switching Waveforms
Figure 2. Switching Waveforms
Figure 3. Switching Waveforms
Figure 4. Test Circuit
Rev. 00
IKSEMICON [ IK SEMICON CO., LTD ]
