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參數資料
| 型號： | 74ACQ244SC |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | Complete High-Speed CMOS, 12-Bit ADC |
| 中文描述： | AC SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDSO20 |
| 封裝： | 0.300 INCH, MS-013, SOIC-20 |
| 文件頁數： | 5/10頁 |
| 文件大?。?/td> | 103K |
| 代理商： | 74ACQ244SC |
5
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7
DC Electrical Characteristics for ACTQ
(Continued)
Note 11:
Max number of outputs defined as (n). Data Inputs are driven 0V to 3V. One output @ GND.
Note 12:
Max number of Data Inputs (n) switching. (n
1) Inputs switching 0V to 3V (ACTQ). Input-under-test switching: 3V to threshold (V
ILD
),
0V to threshold (V
IHD
), f
=
1 MHz.
AC Electrical Characteristics for ACQ
Note 13:
Voltage Range 5.0 is 5.0V
±
0.5V.
Voltage Range 3.3 is 3.3V
±
0.3V.
Note 14:
Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The
specification applies to any outputs switching in the same direction, either HIGH to LOW (t
OSHL
) or LOW to HIGH (t
OSLH
). Parameter guaranteed by design.
AC Electrical Characteristics for ACTQ
Note 15:
Voltage Range 5.0 is 5.0V
±
0.5V.
Note 16:
Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The
specification applies to any outputs switching in the same direction, either HIGH to LOW (t
OSHL
) or LOW to HIGH (t
OSLH
). Parameter guaranteed by design.
Capacitance
V
CC
T
A
=
+
25
°
C
C
L
=
50 pF
Typ
7.0
T
A
=
40
°
C to
+
85
°
C
C
L
=
50 pF
Min
2.0
Symbol
Parameter
(V)
Units
(Note 13)
3.3
Min
2.0
Max
9.0
Max
9.5
t
PHL
t
PLH
t
PZL
t
PZH
Propagation Delay
ns
Data to Output
Output Enable Time
5.0
3.3
5.0
1.5
2.5
1.5
5.0
8.0
6.5
6.0
12.0
8.0
1.5
2.5
1.5
6.5
12.5
8.5
ns
t
PHZ
t
PLZ
Output Disable Time
3.3
5.0
3.3
1.0
1.0
9.0
7.5
1.0
13.5
9.0
1.5
1.0
1.0
14.0
9.5
1.5
ns
t
OSHL
t
OSLH
Output to Output
ns
Skew Data to Output (Note 14)
5.0
0.5
1.0
1.0
V
CC
T
A
=
+
25
°
C
C
L
=
50 pF
Typ
5.5
T
A
=
40
°
C to
+
85
°
C
C
L
=
50 pF
Min
1.5
Symbol
Parameter
(V)
Units
(Note 15)
5.0
Min
1.5
Max
6.5
Max
7.0
t
PHL
t
PLH
t
PZL
t
PZH
t
PHZ
t
PLZ
t
OSHL
t
OSLH
Propagation Delay
ns
Data to Output
Output Enable Time
5.0
1.5
7.0
8.5
1.5
9.0
ns
Output Disable Time
5.0
1.0
8.0
9.5
1.0
10.0
ns
Output to Output
5.0
0.5
1.0
1.0
ns
Skew Data to Output (Note 16)
Symbol
Parameter
Typ
Units
Conditions
C
IN
C
PD
Input Capacitance
4.5
pF
V
CC
=
OPEN
V
CC
=
5.0V
Power Dissipation Capacitance
70
pF
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