參數(shù)資料
型號： 74ACTQ16245SSCX
廠商： FAIRCHILD SEMICONDUCTOR CORP
元件分類： 通用總線功能
英文描述： Dual 8-bit Bus Transceiver
中文描述： ACT SERIES, DUAL 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO48
封裝： 0.300 INCH, MO-118, SSOP-48
文件頁數(shù)： 4/7頁
文件大?。?/td> 86K
代理商： 74ACTQ16245SSCX
www.fairchildsemi.com
4
7
AC Electrical Characteristics
Note 8:
Voltage Range 5.0 is 5.0V
±
0.5V.
Extended AC Electrical Characteristics
Note 9:
Voltage Range 5.0 is 5.0V
±
0.5V.
Note 10:
Skew is defined as the absolute value of the difference between the actual propagation delays for any two separate outputs of the same device.
The specification applies to any outputs switching HIGH-to-LOW (t
OSHL
), LOW-to-HIGH (t
OSLH
), or any combination switching LOW-to-HIGH and/or HIGH-
to-LOW (t
OST
).
Note 11:
This specification is guaranteed but not tested. The limits apply to propagation delays for all paths described switching in phase
(i.e., all LOW-to-HIGH, HIGH-to-LOW, etc.).
Note 12:
This specification is guaranteed but not tested. The limits represent propagation delays with 250 pF load capacitors in place of the 50 pF load
capacitors in the standard AC load. This specification pertains to single output switching only.
Note 13:
3-STATE delays are load dominated and have been excluded from the datasheet.
Note 14:
The Output Disable Time is dominated by the RC network (500
, 250 pF) on the output and has been excluded from the datasheet.
Capacitance
V
CC
T
A
=
+
25
°
C
C
L
=
50 pF
Typ
5.7
5.1
T
A
=
40
°
C to
+
85
°
C
C
L
=
50 pF
Min
3.2
2.6
Symbol
Parameter
(V)
Units
(Note 8)
5.0
5.0
Min
3.2
2.6
Max
8.4
7.9
Max
9.0
8.4
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation Delay
A
n
, B
n
to B
n
, A
n
Output Enable
Time
Output Disable
ns
5.0
5.0
5.0
3.7
4.1
2.2
6.4
7.4
5.4
9.4
10.5
8.7
2.7
3.4
2.2
10.0
11.6
9.3
ns
ns
Time
5.0
2.0
5.2
8.2
2.0
8.8
T
A
=
40
°
C to
+
85
°
C
C
L
=
50 pF
T
A
=
40
°
C to
+
85
°
C
C
L
=
250 pF
(Note 12)
Min
5.9
Symbol
Parameter
V
CC
(V)
16 Outputs Switching
Units
(Note 11)
Typ
(Note 9)
5.0
Min
4.2
Max
11.9
Max
14.6
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PZL
t
OSHL
(Note 10)
t
OSLH
(Note 10)
Propagation Delay
ns
Data to Output
Output Enable Time
5.0
5.0
5.0
3.5
4.5
4.4
9.9
11.4
12.2
5.0
13.4
(Note 13)
ns
Output Disable Time
5.0
5.0
3.5
3.1
9.3
8.8
(Note 14)
ns
Pin to Pin Skew
5.0
1.2
ns
HL Data to Output
Pin to Pin Skew
LH Data to Output
5.0
1.3
ns
t
OST
(Note 10)
Pin to Pin Skew
LH/HL Data to Output
5.0
3.0
ns
Symbol
Parameter
Typ
Units
Conditions
C
IN
C
PD
Input Pin Capacitance
Power Dissipation Capacitance
4.5
25
pF
pF
V
CC
=
5.0V
V
CC
=
5.0V
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