參數(shù)資料
型號(hào): M54HC257C1R
廠商: 意法半導(dǎo)體
英文描述: HC258QUAD 2CHANNEL MULTIPLEXER 3-STATE, INVERTING HC257 QUAD 2 CHANNEL MULTIPLEXER 3-STATE
中文描述: HC258QUAD 2頻道多路轉(zhuǎn)換三態(tài),反相HC257四2通道多路3態(tài)
文件頁數(shù): 6/12頁
文件大?。?/td> 259K
代理商: M54HC257C1R
AC ELECTRICAL CHARACTERISTICS
(C
L
= 50 pF, Input t
r
= t
f
= 6 ns)
Symbol
Parameter
Test Conditions
Value
-40 to 85
o
C
74HC
Min.
Unit
V
CC
(V)
C
L
(pF)
T
A
= 25
o
C
54HC and 74HC
Min.
Typ.
25
-55 to 125
o
C
54HC
Min.
Max.
60
12
10
100
20
17
140
28
24
100
20
17
140
28
24
110
22
19
150
30
26
140
28
24
10
Max.
75
15
13
125
25
21
175
35
30
125
25
21
175
35
30
140
28
24
190
38
32
175
35
30
10
Max.
90
19
15
150
30
26
210
42
36
150
30
26
210
42
36
165
33
28
225
45
38
210
42
36
10
t
TLH
t
THL
Output Transition
Time
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
50
ns
7
6
t
PLH
t
PHL
Propagation
Delay Time
(A, B - Y)
50
45
13
11
62
18
15
45
13
11
62
18
15
40
12
10
57
17
14
28
14
13
5
10
ns
150
ns
t
PLH
t
PHL
Propagation
Delay Time
(SELECT - Y)
50
ns
150
ns
t
PZL
t
PZH
Output Enable
Time
50
R
L
= 1 K
ns
150
R
L
= 1 K
ns
t
PLZ
t
PHZ
Output Disable
Time
50
R
L
= 1 K
ns
C
IN
C
OUT
Input Capacitance
Output
Capacitance
Power Dissipation
Capacitance
pF
pF
C
PD
(*)
47
pF
(*) C
PD
isdefined asthe value ofthe IC’sinternal equivalent capactance which is calculated from the operating current consumption without load.
(Refer to Test Circuit).Average operting current can be obtained by thefollowingequation. I
CC
(opr) = C
PD
V
CC
f
IN
+ I
CC
/4(per Channel)
M54/M74HC257/258
6/12
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