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參數資料
| 型號： | 74F646B |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Octal Transceiver/Register with TRI-STATE(帶三態(tài)輸出的八路收發(fā)器/寄存器) |
| 中文描述： | 八路收發(fā)器/注冊的三態(tài)（帶三態(tài)輸出的八路收發(fā)器/寄存器） |
| 文件頁數： | 7/12頁 |
| 文件大?。?/td> | 202K |
| 代理商： | 74F646B |
’F646/’F648
AC Electrical Characteristics
74F
54F
74F
T
A
e a
25
§
C
V
CC
e a
5.0V
C
L
e
50 pF
T
A
, V
CC
e
Mil
C
L
e
50 pF
T
A
, V
CC
e
Com
C
L
e
50 pF
Symbol
Parameter
Units
Min
Max
Min
Max
Min
Max
f
max
Maximum Clock Frequency
90
75
90
MHz
t
PLH
t
PHL
Propagation Delay
Clock to Bus
2.0
2.0
7.0
8.0
2.0
2.0
8.5
9.5
2.0
2.0
8.0
9.0
ns
t
PLH
t
PHL
Propagation Delay
Bus to Bus (’F646)
1.0
1.0
7.0
6.5
1.0
1.0
8.0
8.0
1.0
1.0
7.5
7.0
ns
t
PLH
t
PHL
Propagation Delay
Bus to Bus (’F648)
2.0
1.0
8.5
7.5
1.0
1.0
10.0
9.0
2.0
1.0
9.0
8.0
ns
t
PLH
t
PHL
Propagation Delay
SBA or SAB to A or B
2.0
2.0
8.5
8.0
2.0
2.0
11.0
10.0
2.0
2.0
9.5
9.0
ns
t
PZH
t
PZL
Enable Time
OE to A or B
2.0
2.0
8.5
12.0
2.0
2.0
10.0
13.5
2.0
2.0
9.0
12.5
ns
t
PHZ
t
PLZ
Disable Time
OE to A or B
1.0
2.0
7.5
9.0
1.0
2.0
9.0
11.0
1.0
2.0
8.5
9.5
ns
t
PZH
t
PZL
Enable Time
DIR to A or B
2.0
2.0
14.0
13.0
2.0
2.0
16.0
15.0
2.0
2.0
15.0
14.0
ns
t
PHZ
t
PLZ
Disable Time
DIR to A or B
1.0
2.0
9.0
11.0
1.0
2.0
10.0
12.0
1.0
2.0
9.5
11.5
ns
’F646/’F648
AC Operating Requirements
74F
54F
74F
Symbol
Parameter
T
A
e a
25
§
C
V
CC
e a
5.0V
T
A
, V
CC
e
Mil
T
A
, V
CC
e
Com
Units
Min
Max
Min
Max
Min
Max
t
s
(H)
t
s
(L)
Setup Time, HIGH or LOW
Bus to Clock
5.0
5.0
5.0
5.0
5.0
5.0
ns
t
h
(H)
t
h
(L)
Hold Time, HIGH or LOW
Bus to Clock
2.0
2.0
2.5
2.5
2.0
2.0
ns
t
w
(H)
t
w
(L)
Clock Pulse Width
HIGH or LOW
5.0
5.0
5.0
5.0
5.0
5.0
ns
7
相關PDF資料 |
PDF描述 |
|---|---|
| 74F646 | Octal Transceiver/Register with TRI-STATE Outputs |
| 74F648 | Octal Transceiver/Register with TRI-STATE Outputs |
| 74F646SPC | Octal Transceiver/Register with TRI-STATE Outputs |
| 74F648SC | Octal Transceiver/Register with TRI-STATE Outputs |
| 74F648SPC | Octal Transceiver/Register with TRI-STATE Outputs |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 74F646BFCQB | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Octal Transceiver/Register with TRI-STATE Outputs |
| 74F646BFCX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Octal Transceiver/Register with TRI-STATE Outputs |
| 74F646BFMQB | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Octal Transceiver/Register with TRI-STATE Outputs |
| 74F646BFMX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Octal Transceiver/Register with TRI-STATE Outputs |
| 74F646BLCQB | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Octal Transceiver/Register with TRI-STATE Outputs |
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