參數(shù)資料
型號: DM74LS257BMX
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 通用總線功能
英文描述: 2-Input Digital Multiplexer
中文描述: LS SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16
封裝: PLASTIC, SOP-16
文件頁數(shù): 3/5頁
文件大?。?/td> 56K
代理商: DM74LS257BMX
3
www.fairchildsemi.com
D
Switching Characteristics
V
CC
=
5V and T
A
=
25
°
C
Note 5:
C
L
=
5 pF
Symbol
Parameter
RL
=
667
Units
From (Input)
C
L
=
45 pF
Min
C
L
=
150 pF
Min
To (Output)
Max
Max
t
PLH
Propagation Delay Time
Data to Output
18
27
ns
LOW-to-HIGH Level Output
Propagation Delay Time
HIGH-to-LOW Level Output
t
PHL
Data to Output
18
27
ns
t
PLH
Propagation Delay Time
LOW-to-HIGH Level Output
Propagation Delay Time
Select to Output
28
35
ns
t
PHL
Select to Output
35
42
ns
HIGH-to-LOW Level Output
Output Enable Time
to HIGH Level Output
t
PZH
Output Control to Y
15
27
ns
t
PZL
Output Enable Time
to LOW Level Output
Output Disable Time from
Output Control to Y
28
38
ns
t
PHZ
Output Control to Y
28
ns
HIGH Level Output (Note 5)
Output Disable Time from
LOW Level Output (Note 5)
t
PLZ
Output Control to Y
25
ns
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