參數(shù)資料
型號: 74ACT240SJ
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 通用總線功能
英文描述: Octal Buffer/Line Driver with 3-STATE Outputs
中文描述: ACT SERIES, DUAL 4-BIT DRIVER, INVERTED OUTPUT, PDSO20
封裝: 5.30 MM, LEAD FREE, EIAJ TYPE2, SOP-20
文件頁數(shù): 4/8頁
文件大?。?/td> 78K
代理商: 74ACT240SJ
CAPACITIVE CHARACTERISTICS
Symbol
Parameter
Test Conditions
Value
Unit
V
CC
(V)
T
A
= 25
o
C
Min.
Typ.
-40 to 85
o
C
Min.
Max.
Max.
C
IN
C
OUT
C
PD
Input Capacitance
Output Capacitance
Power Dissipation
Capacitance (note 1)
1) C
PD
isdefined as the value ofthe IC’s internalequivalent capacitance which iscalculated fromtheoperating currentconsumption without load. (Refer to
Test Circuit).Average operating current can beobtained by the followingequation.I
CC
(opr) =C
PD
V
CC
f
IN
+I
CC
/n (per circuit)
5.0
5.0
5.0
4
8
21
pF
pF
pF
AC ELECTRICAL CHARACTERISTICS
(C
L
= 50 pF, R
L
= 500
, Input t
r
= t
f
=3ns)
Symbol
Parameter
Test Condition
Value
Unit
V
CC
(V)
5.0
(*)
T
A
= 25
o
C
Min.
Typ.
1.5
-40 to 85
o
C
Min.
1.5
Max.
7.5
Max.
8.5
t
PLH
t
PHL
t
PZL
t
PZH
t
PLZ
t
PHZ
Propagation Delay Time
5.0
ns
Output Enable Time
5.0
(*)
1.5
6.0
8.5
1.5
9.5
ns
Output Disable Time
5.0
(*)
1.5
6.5
10.0
1.5
10.5
ns
(*)Voltage range is 5V
±
0.5V
TEST CIRCUIT
TEST
SWITCH
Open
2V
CC
Open
t
PLH
, t
PHL
t
PZL
, t
PLZ
t
PZH
, t
PHZ
C
L
=50 pFor equivalent (includes jigand probe capacitance)
R
L
=R
1
=500
or equivalent
R
T
=Z
OUT
of pulse generator (typically50
)
74ACT240
4/8
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