參數(shù)資料
型號: 74AC646
廠商: Fairchild Semiconductor Corporation
英文描述: Octal Transceiver/Register with 3-STATE Outputs
中文描述: 八路收發(fā)器/ 3注冊態(tài)輸出
文件頁數(shù): 5/10頁
文件大?。?/td> 72K
代理商: 74AC646
5
www.fairchildsemi.com
7
DC Electrical Characteristics for ACT
Note 6:
All outputs loaded; thresholds on input associated with output under test.
Note 7:
Maximum test duration 2.0 ms, one output loaded at a time.
AC Electrical Characteristics for AC
Symbol
Parameter
V
CC
(V)
4.5
5.5
T
A
=
+
25
°
C
Typ
1.5
1.5
T
A
=
40
°
C to
+
85
°
C
Guaranteed Limits
Units
Conditions
V
IH
Minimum HIGH Level
Input Voltage
2.0
2.0
2.0
2.0
V
V
OUT
=
0.1V
or V
CC
0.1V
V
OUT
=
0.1V
or V
CC
0.1V
I
OUT
=
50
μ
A
V
IL
Maximum LOW Level
Input Voltage
Minimum HIGH Level
4.5
5.5
4.5
1.5
1.5
4.49
0.8
0.8
4.4
0.8
0.8
4.4
V
V
OH
V
Output Voltage
5.5
5.49
5.4
5.4
V
IN
=
V
IL
or V
IH
I
OH
=
24 mA
I
OH
=
24 mA (Note 6)
I
OUT
=
50
μ
A
4.5
3.86
3.76
V
5.5
4.5
5.5
4.86
0.1
0.1
4.76
0.1
0.1
V
OL
Maximum LOW Level
Output Voltage
0.001
0.001
V
V
IN
=
V
IL
or V
IH
I
OL
= 24 mA
I
OL
= 24 mA (Note 6)
V
I
=
V
CC
, GND
4.5
5.5
0.36
0.36
±
0.1
0.44
0.44
±
1.0
V
Maximum Input
Leakage Current
Maximum
I
CC
/Input
Minimum Dynamic
Output Current (Note 7)
5.5
μ
A
5.5
0.6
1.5
mA
V
I
=
V
CC
2.1V
I
OLD
I
OHD
I
CC
5.5
5.5
75
75
80.0
mA
mA
μ
A
V
OLD
=
1.65V Max
V
OHD
=
3.85V Min
V
IN
=
V
CC
or GND
V
I
(OE)
=
V
IL
, V
IH
V
I
=
V
CC
, GND
V
O
=
V
CC
, GND
Maximum Quiescent
Supply Current
Maximum I/O
5.5
8.0
I
OZT
Leakage Current
5.5
±
0.6
±
6.0
μ
A
V
CC
T
A
=
+
25
°
C
T
A
=
40
°
C to
+
85
°
C
Symbol
Parameter
(V)
C
L
=
50 pF
C
L
=
50 pF
Units
(Note 8)
Min
Typ
Max
Min
Max
t
PLH
Propagation Delay
3.3
4.0
10.5
16.5
3.0
18.5
ns
Clock to Bus
5.0
2.5
7.5
12.0
2.0
13.0
t
PHL
Propagation Delay
3.3
3.0
9.5
14.5
2.5
16.0
ns
Clock to Bus
5.0
2.0
6.5
10.5
1.5
11.5
t
PLH
Propagation Delay
3.3
2.5
7.5
12.0
2.0
13.5
ns
Bus to Bus
5.0
1.5
5.0
8.0
1.0
9.0
t
PHL
Propagation Delay
3.3
1.5
7.5
12.5
1.5
13.5
ns
Bus to Bus
5.0
1.5
5.0
9.0
1.0
9.5
t
PLH
Propagation Delay
3.3
2.0
8.5
13.5
1.5
15.5
SBA or SAB to A
n
or B
n
5.0
1.5
6.0
10.0
1.5
11.0
ns
(w/ A
n
or B
n
HIGH or LOW)
t
PHL
Propagation Delay
3.3
1.5
8.5
13.5
1.5
15.0
SBA or SAB to A
n
or B
n
5.0
1.5
6.0
10.0
1.5
11.0
ns
(w/ A
n
or B
n
HIGH or LOW)
t
PZH
Enable Time
3.3
2.5
7.0
11.5
2.0
12.5
ns
G to A
n
or B
n
5.0
1.5
5.0
8.5
1.5
9.0
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