參數(shù)資料
型號: LS138
廠商: System Logic Semiconductor Co., Ltd.
英文描述: 3-to-8-Line Decoder/Demultiplexer
中文描述: 3至8線譯碼器/解復(fù)用器
文件頁數(shù): 3/3頁
文件大?。?/td> 33K
代理商: LS138
SL74LS138
S ystem Logic
Semiconductor
SLS
AC ELECTRICAL CHARACTERISTICS
(T
A
=25
°
C, V
CC
= 5.0 V, C
L
= 15 pF, R
L
= 2 k
, t
r
=15
ns, t
f
= 6.0 ns)
Symbol
Parameter
Level
Min
Max
Unit
t
PLH
Maximum Propagation Delay, Input A to
Output Y
2
20
ns
t
PHL
Maximum Propagation Delay, Input A to
Output Y
41
ns
t
PLH
Maximum Propagation Delay, Input A to
Output Y
3
27
ns
t
PHL
Maximum Propagation Delay, Input A to
Output Y
39
ns
t
PLH
Maximum Propagation Delay , CS1 to
Output Y
3
26
ns
t
PHL
Maximum Propagation Delay , CS1 to
Output Y
38
ns
t
PLH
Maximum Output Transition Time , CS2 or CS3
to Output Y
2
18
ns
t
PHL
Maximum Output Transition Time , CS2 or CS3
to Output Y
32
ns
Figure 1. Switching Waveforms
Figure 2. Switching Waveforms
NOTES A.
C
L
includes probe and jig capacitance.
B. All diodes are 1N916 or 1N3064.
Figure 3. Switching Waveforms
Figure 4. Test Circuit
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