參數(shù)資料
型號(hào): 74AC648SCX
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 通用總線功能
英文描述: CMOS, Buffered, 12-Bit Multiplying DAC
中文描述: AC SERIES, 8-BIT REGISTERED TRANSCEIVER, INVERTED OUTPUT, PDSO24
封裝: 0.300 INCH, MS-013, SOIC-24
文件頁數(shù): 5/7頁
文件大小: 73K
代理商: 74AC648SCX
5
www.fairchildsemi.com
7
AC Electrical Characteristics
Note 6:
Voltage Range 3.3 is 3.3V
±
0.3V; Voltage Range 5.0 is 5.0V
±
0.5V
AC Operating Requirements
Note 7:
Voltage Range 3.3 is 3.3V
±
0.3V; Voltage Range 5.0 is 5.0V
±
0.5V
Capacitance
V
CC
T
A
=
+
25
°
C
C
L
=
50 pF
Typ
10.0
7.0
T
A
=
40
°
C to
+
85
°
C
C
L
=
50 pF
Min
1.5
1.5
Symbol
Parameter
(V)
Units
(Note 6)
3.3
5.0
Min
1.5
1.5
Max
15.5
11.0
Max
17.0
12.0
t
PLH
Propagation Delay
Clock to Bus
ns
t
PHL
Propagation Delay
Clock to Bus
Propagation Delay
3.3
5.0
3.3
1.5
1.5
1.5
8.5
6.0
6.0
13.5
10.5
10.0
1.5
1.5
1.5
14.5
11.5
11.0
ns
t
PLH
ns
Bus to Bus
Propagation Delay
Bus to Bus
5.0
3.3
5.0
1.5
1.5
1.5
4.0
5.5
3.5
7.0
9.0
7.5
1.0
1.5
1.0
7.5
10.0
8.0
t
PHL
ns
t
PLH
Propagation Delay
SBA or SAB to A
n
or B
n
(with A
n
or B
n
HIGH or LOW)
Propagation Delay
SBA or SAB to A
n
or B
n
(with A
n
or B
n
HIGH or LOW)
Enable Time
G to A
n
or B
n
Enable Time
3.3
5.0
1.5
1.5
7.5
5.5
12.5
9.0
1.5
1.5
14.0
10.0
ns
t
PHL
3.3
5.0
1.5
1.5
7.5
5.5
12.5
9.5
1.5
1.5
14.0
10.5
ns
t
PZH
3.3
5.0
3.3
1.5
1.5
1.5
6.5
5.0
7.0
11.0
8.0
11.0
1.0
1.0
1.0
11.5
9.0
12.5
ns
t
PZL
ns
G to A
n
or B
n
Disable Time
G to A
n
or B
n
Disable Time
G to A
n
or B
n
Enable Time
5.0
3.3
5.0
1.5
1.5
1.5
5.0
7.5
6.0
8.0
12.0
10.0
1.0
1.0
1.0
9.0
13.0
11.0
t
PHZ
ns
t
PLZ
3.3
5.0
3.3
1.5
1.5
1.5
7.0
5.5
6.0
11.5
9.0
12.5
1.0
1.0
1.0
12.5
10.0
14.0
ns
t
PZH
ns
DIR to A
n
or B
n
Enable Time
5.0
3.3
1.5
1.5
4.5
6.5
9.5
13.0
1.0
1.5
10.5
14.5
t
PZL
ns
DIR to A
n
or B
n
Disable Time
DIR to A
n
or B
n
Disable Time
DIR to A
n
or B
n
5.0
3.3
5.0
1.5
1.5
1.5
4.5
7.0
5.5
9.0
11.5
9.0
1.0
1.0
1.0
10.5
13.5
10.0
t
PHZ
ns
t
PLZ
3.3
5.0
1.5
1.5
7.0
5.0
13.5
9.5
1.5
1.0
15.0
10.0
ns
V
CC
(V)
T
A
=
+
25
°
C
C
L
=
50 pF
Typ
2.0
1.5
1.5
0.5
2.0
2.0
T
A
=
40
°
C to
+
85
°
C
C
L
=
50 pF
Guaranteed Minimum
Symbol
Parameter
Units
(Note 7)
3.3
5.0
3.3
t
S
Setup Time, HIGH or LOW,
Bus to Clock
Hold Time, HIGH or LOW,
3.0
2.0
0
3.5
2.0
0
ns
t
H
ns
Bus to Clock
Clock Pulse Width
HIGH or LOW
5.0
3.3
5.0
1.0
3.5
3.0
1.0
4.0
3.0
t
W
ns
Symbol
Parameter
Typ
4.5
Units
pF
Conditions
C
IN
C
PD
C
I/O
Input Capacitance
V
CC
=
OPEN
V
CC
=
5.0V
V
CC
=
5.0V
Power Dissipation Capacitance
Input/Output Capacitance
65.0
15.0
pF
pF
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