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參數(shù)資料
| 型號(hào)： | IN74LS157 |
| 廠商： | INTEGRAL JOINT STOCK COMPANY |
| 英文描述： | Quad 2-Input Data Selector/Multiplexer |
| 中文描述： | 四2輸入數(shù)據(jù)選擇器/復(fù)用器 |
| 文件頁數(shù)： | 3/3頁 |
| 文件大小： | 144K |
| 代理商： | IN74LS157 |
IN74LS157
3
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
Min
Max
Unit
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
Propagation Delay, Input A or B to Output Y
14
ns
Propagation Delay, Input A or B to Output Y
14
ns
Propagation Delay, Select to Output Y
23
ns
Propagation Delay, Select to Output Y
27
ns
Propagation Delay, Output Enable to Output Y
20
ns
Propagation Delay, Output Enable to Output Y
21
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. Test Circuit
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