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參數資料
| 型號： | MM74HC643J |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | Inverting Octal TRI-STATE Transceiver |
| 中文描述： | HC/UH SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, CDIP20 |
| 封裝： | DIP-20 |
| 文件頁數： | 3/6頁 |
| 文件大小： | 145K |
| 代理商： | MM74HC643J |
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
13
17
ns
t
PZH
, t
PZL
Maximum Output Enable Time
R
L
e
1 k
X
C
L
e
45 pF
33
42
ns
t
PHZ
, t
PLZ
Maximum Output Disable Time
R
L
e
1 k
X
C
L
e
5 pF
32
42
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
29
38
72
96
88
116
96
128
ns
ns
C
L
e
50 pF
C
L
e
150 pF
4.5V
4.5V
14
18
18
24
22
29
24
32
ns
ns
C
L
e
50 pF
C
L
e
150 pF
6.0V
6.0V
14
18
18
24
22
29
24
32
ns
ns
t
PZH
,
Maximum Output Enable
R
L
e
1 k
X
t
PZL
C
L
e
50 pF
C
L
e
150 pF
2.0V
2.0V
70
80
184
216
224
260
240
284
ns
ns
C
L
e
50 pF
C
L
e
150 pF
4.5V
4.5V
35
41
46
54
56
65
60
71
ns
ns
C
L
e
50 pF
C
L
e
150 pF
6.0V
6.0V
31
36
41
47
50
57
54
62
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
47
33
31
172
43
41
208
52
50
224
56
54
ns
ns
ns
t
THL
, t
TLH
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
120
12
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
相關PDF資料 |
PDF描述 |
|---|---|
| MM74HC643N | Inverting Octal TRI-STATE Transceiver |
| MM54HC646 | Non-Inverting Octal Bus Transceiver/Registers |
| MM54HC648 | Non-Inverting Octal Bus Transceiver/Registers |
| MM74HC646 | Non-Inverting Octal Bus Transceiver/Registers |
| MM74HC648 | Non-Inverting Octal Bus Transceiver/Registers |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MM74HC643N | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Inverting Octal TRI-STATE Transceiver |
| MM74HC646 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Non-Inverting Octal Bus Transceiver/Registers |
| MM74HC646N | 制造商:Texas Instruments 功能描述: |
| MM74HC648 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Non-Inverting Octal Bus Transceiver/Registers |
| MM74HC688 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:8-Bit Magnitude Comparator (Equality Detector) |
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