參數(shù)資料
型號: 74LCX245M
英文描述: Single 8-bit Bus Transceiver
中文描述: 單8位總線收發(fā)器
文件頁數(shù): 3/8頁
文件大?。?/td> 88K
代理商: 74LCX245M
3
www.fairchildsemi.com
7
AC Electrical Characteristics
Note 4:
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
).
Dynamic Switching Characteristics
Capacitance
Symbol
Parameter
T
A
=
40
°
C to
+
85
°
CF, R
L
=
500
V
CC
=
2.7V
C
L
=
50pF
Min
1.5
1.5
Units
V
CC
=
3.3V
±
0.3V
C
L
=
50pF
Min
1.5
1.5
V
CC
=
2.5V
±
0.2V
C
L
=
30pF
Min
1.5
1.5
Max
5.2
5.2
1.0
Max
6.0
6.0
Max
6.2
6.2
t
PHL
t
PLH
t
OSHL
t
OSLH
Propagation Delay
ns
Output to Output Skew (Note 4)
ns
1.0
Symbol
Parameter
Conditions
V
CC
(V)
3.3
2.5
3.3
T
A
=
25
°
C
Typical
0.8
0.6
0.8
0.6
Unit
V
OLP
Quiet Output Dynamic Peak V
OL
C
L
=
50 pF, V
IH
=
3.3V, V
IL
=
0V
C
L
=
30 pF, V
IH
=
2.5V, V
IL
=
0V
C
L
=
50 pF, V
IH
=
3.3V, V
IL
=
0V
C
L
=
30 pF, V
IH
=
2.5V, V
IL
=
0V
V
V
OLV
Quiet Output Dynamic Valley V
OL
V
2.5
Symbol
C
IN
C
OUT
C
PD
Parameter
Conditions
Typical
7
8
25
Units
pF
pF
pF
Input Capacitance
Output Capacitance
Power Dissipation Capacitance
V
CC
=
Open, V
I
=
0V or V
CC
V
CC
=
3.3V, V
I
=
0V or V
CC
V
CC
=
3.3V, V
I
=
0V or V
CC
, f
=
10 MHz
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