SL74HC158 Просмотр технического описания (PDF) - System Logic Semiconductor
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SL74HC158 Datasheet PDF : 5 Pages
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SL74HC158
AC ELECTRICAL CHARACTERISTICS(CL=50pF,Input tr=tf=6.0 ns)
Symbol
Parameter
tPLH, tPHL Maximum Propagation Delay, Input A or B to
Output Y (Figures 1and 4)
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
VCC
Guaranteed Limit
V 25 °C to ≤85°C ≤125°C Unit
-55°C
2.0 105
130
160
ns
4.5 21
26
32
6.0 18
22
27
2.0 110
140
165
ns
4.5 22
28
33
6.0 19
24
28
2.0 100
125
150
ns
4.5 20
25
30
6.0 17
21
26
2.0 75
95
110
ns
4.5 15
19
22
6.0 13
16
19
-
10
10
10
pF
Power Dissipation Capacitance (Per Package)
CPD Used to determine the no-load dynamic power
consumption:
PD=CPDVCC2f+ICCVCC
Typical @25°C,VCC=5.0 V
33
pF
Figure 1. Switching Waveforms
Figure 2. Switching Waveforms
Figure 3. Switching Waveforms
SLS
System Logic
Semiconductor
Figure 4. Test Circuit
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