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參數資料
| 型號： | MM54HC245A |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Octal TRI-STATE Transceiver |
| 中文描述： | 八路三態收發器 |
| 文件頁數： | 3/6頁 |
| 文件大小： | 127K |
| 代理商： | MM54HC245A |
AC Electrical Characteristics
V
CC
e
5V, T
A
e
25
§
C, t
r
e
t
f
e
6 ns
Symbol
Parameter
Conditions
Typ
Guaranteed
Limit
Units
t
PHL
, t
PLH
Maximum Propagation Delay
C
L
e
45 pF
12
17
ns
t
PZH
, t
PZL
Maximum Output Enable Time
R
L
e
1 k
X
C
L
e
45 pF
24
35
ns
t
PHZ
, t
PLZ
Maximum Output Disable Time
R
L
e
1 k
X
C
L
e
5 pF
18
25
ns
AC Electrical Characteristics
V
CC
e
2.0V to 6.0V, C
L
e
50 pF, t
r
e
t
f
e
6 ns (unless otherwise specified)
T
A
e
25
§
C
74HC
54HC
Symbol
Parameter
Conditions
V
CC
T
A
eb
40 to 85
§
C
T
A
eb
55 to 125
§
C
Units
Typ
Guaranteed Limits
t
PHL
,
t
PLH
Maximum Propagation Delay
C
L
e
50 pF
C
L
e
150 pF
2.0V
2.0V
31
41
90
96
113
116
135
128
ns
ns
C
L
e
50 pF
C
L
e
150 pF
4.5V
4.5V
13
17
18
22
23
28
27
33
ns
ns
C
L
e
50 pF
C
L
e
150 pF
6.0V
6.0V
11
14
15
19
19
23
23
28
ns
ns
t
PZH
,
t
PZL
Maximum Output Enable
Time
R
L
e
1 k
X
C
L
e
50 pF
C
L
e
150 pF
2.0V
2.0V
71
81
190
240
240
300
285
360
ns
ns
C
L
e
50 pF
C
L
e
150 pF
4.5V
4.5V
26
31
38
48
48
60
57
72
ns
ns
C
L
e
50 pF
C
L
e
150 pF
6.0V
6.0V
21
25
32
41
41
51
48
61
ns
ns
t
PHZ
,
t
PLZ
Maximum Output Disable
Time
R
L
e
1 k
X
C
L
e
50 pF
2.0V
4.5V
6.0V
39
20
18
135
27
23
169
34
29
203
41
34
ns
ns
ns
t
TLH
, t
THL
Output Rise and Fall Time
C
L
e
50 pF
2.0V
4.5V
6.0V
20
6
5
60
12
10
75
15
13
90
18
15
ns
ns
ns
C
PD
Power Dissipation
Capacitance (Note 5)
G
e
V
IL
G
e
V
IH
50
5
pF
pF
C
IN
Maximum Input Capacitance
5
10
10
10
pF
C
IN/OUT
Maximum Input/Output
Capacitance, A or B
15
20
20
20
pF
Note 5:
C
PD
determines the no load dynamic power consumption, P
D
e
C
PD
V
CC2
f
a
I
CC
V
CC
, and the no load dynamic current consumption, I
S
e
C
PD
V
CC
f
a
I
CC
.
3
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相關代理商/技術參數 |
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| MM54HC245AJ | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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| MM54HC251J/883C | 制造商:Texas Instruments 功能描述: |
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