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參數資料
| 型號： | MM74HC242N |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | Inverting Quad TRI-STATE Transceiver |
| 中文描述： | HC/UH SERIES, 4-BIT TRANSCEIVER, INVERTED OUTPUT, PDIP14 |
| 封裝： | PLASTIC, DIP-14 |
| 文件頁數： | 3/6頁 |
| 文件大小： | 134K |
| 代理商： | MM74HC242N |
AC Electrical Characteristics
(MM54HC242/MM74HC242)
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
18
ns
t
PZH
, t
PZL
Maximum Output Enable
Time to Active Output
R
L
e
1k
X
C
L
e
45 pF
17
28
ns
t
PHZ
, t
PHL
Maximum Output Disable
Time from Active Output
R
L
e
1 k
X
C
L
e
5 pF
15
25
ns
AC Electrical Characteristics
(MM54HC242/MM74HC242, MM54HC243/MM74HC243)
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
55
80
100
150
126
190
149
224
ns
ns
C
L
e
50 pF
C
L
e
150 pF
4.5V
4.5V
12
22
20
30
25
38
30
45
ns
ns
C
L
e
50 pF
C
L
e
150 pF
6.0V
6.0V
11
18
17
26
21
32
25
38
ns
ns
t
PZH
, t
PZL
Maximum Output Enable
Time to Active Output
R
L
e
1 k
X
C
L
e
50 pF
C
L
e
150 pF
2.0V
2.0V
75
100
150
200
189
252
224
298
ns
ns
C
L
e
50 pF
C
L
e
150 pF
4.5V
4.5V
15
30
30
40
38
50
45
60
ns
ns
C
L
e
50 pF
C
L
e
150 pF
6.0V
6.0V
13
17
26
34
32
43
38
51
ns
ns
t
PHZ
, t
PLZ
Maximum Output Disable
Time from Active Output
R
L
e
1 k
X
C
L
e
50 pF
2.0V
4.5V
6.0V
75
15
13
150
30
26
189
38
32
224
45
38
ns
ns
ns
t
TLH
, t
THL
Maximum Output
Rise and Fall
Time
2.0V
4.5V
6.0V
60
12
10
75
15
13
90
18
15
ns
ns
ns
C
PD
Power Dissipation
Capacitance (Note 5)
(per buffer)
Outputs Disabled
Outputs Enabled
12
50
pF
pF
C
IN
Maximum Input Capacitance
5
10
10
10
pF
C
OUT
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
.
Maximum Output Capacitance
10
20
20
20
pF
3
相關PDF資料 |
PDF描述 |
|---|---|
| MM74HC243 | Inverting Quad TRI-STATE Transceiver |
| MM74HC243J | Inverting Quad TRI-STATE Transceiver |
| MM74HC243N | Inverting Quad TRI-STATE Transceiver |
| MM54HC242 | Inverting Quad TRI-STATE Transceiver |
| MM54HC242J | Inverting Quad TRI-STATE Transceiver |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MM74HC243 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Inverting Quad TRI-STATE Transceiver |
| MM74HC243J | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Inverting Quad TRI-STATE Transceiver |
| MM74HC243N | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MM74HC244 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Octal 3-STATE Buffer |
| MM74HC244_05 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Octal 3-STATE Buffer |
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