參數(shù)資料
型號(hào): 74ACQ544
廠商: Fairchild Semiconductor Corporation
英文描述: Quiet Series⑩ Octal Registered Transceiver with 3-STATE Outputs
中文描述: 安靜系列⑩八路注冊(cè)收發(fā)器三態(tài)輸出
文件頁(yè)數(shù): 6/9頁(yè)
文件大?。?/td> 86K
代理商: 74ACQ544
www.fairchildsemi.com
6
7
AC Electrical Characteristics for ACTQ
Note 16:
Voltage Range 5.0 is 5.0V
±
0.5V
Note 17:
Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs within the same packaged 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. Not tested.
AC Operating Requirements for ACTQ
Note 18:
Voltage Range 5.0 is 5.0V
±
0.5V
Capacitance
V
CC
T
A
=
+
25
°
C
C
L
=
50 pF
Typ
T
A
=
40
°
C to
+
85
°
C
C
L
=
50 pF
Min
Symbol
Parameter
(V)
Units
(Note 16)
Min
Max
Max
t
PLH
t
PHL
Propagation Delay
Transparent Mode
5.0
1.5
5.5
7.5
1.5
8.5
ns
A
n
to B
n
or B
n
to A
n
Propagation Delay
LEBA, LEAB to A
n
, B
n
Output Enable Time
OEBA or OEAB to A
n
or B
n
CEBA or CEAB to A
n
or B
n
Output Disable Time
OEBA or OEAB to A
n
or B
n
CEBA or CEAB to A
n
or B
n
Output to Output
Skew (Note 17)
t
PLH
t
PHL
t
PZH
t
PZL
5.0
1.5
6.5
8.5
1.5
9.0
ns
5.0
1.5
8.0
10.0
1.5
10.5
ns
t
PHZ
t
PLZ
5.0
1.0
5.5
7.5
1.0
8.0
ns
t
OSHL
t
OSLH
5.0
0.5
1.0
1.0
ns
V
CC
T
A
=
+
25
°
C
C
L
=
50 pF
Typ
T
A
=
40
°
C to
+
85
°
C
C
L
=
50 pF
Guaranteed Minimum
Symbol
Parameter
(V)
Units
(Note 18)
t
S
Setup Time, HIGH or LOW
A
n
or B
n
to LEBA or LEAB
Hold Time, HIGH or LOW
A
n
or B
n
to LEBA or LEAB
Latch Enable, B to A
5.0
3.0
3.0
ns
t
H
5.0
1.5
1.5
ns
t
W
5.0
4.0
4.0
ns
Pulse Width, LOW
Symbol
Parameter
Typ
4.5
80.0
Units
pF
pF
Conditions
C
IN
C
PD
Input Capacitance
Power Dissipation Capacitance
V
CC
=
5.0V
V
CC
=
5.0V
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