參數(shù)資料
型號: 74AC280
廠商: 意法半導(dǎo)體
英文描述: 9 BIT PARITY GENERATOR
中文描述: 9位奇偶發(fā)生器
文件頁數(shù): 4/8頁
文件大?。?/td> 64K
代理商: 74AC280
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
PD
Input Capacitance
Power Dissipation
Capacitance (note 1)
5.0
5.0
4
27
pF
pF
1)C
PD
isdefined as thevalue oftheIC’sinternal equivalent capacitance whichiscalculated fromtheoperatingcurrent consumption without load.(Referto
TestCircuit).Average operatingcurrent canbeobtained bythefollowingequation.I
CC
(opr)=C
PD
V
CC
f
IN
+I
CC
AC ELECTRICAL CHARACTERISTICS
(C
L
= 50 pF, R
L
= 500
, Input t
r
= t
f
=3 ns)
Symbol
Parameter
Test Condition
Value
Unit
V
CC
(V)
3.3
(*)
5.0
(**)
T
A
= 25
o
C
Min.
Typ.
1.5
1.5
-40 to 85
o
C
Min.
1
1
Max.
17.0
13.0
Max.
18.5
14.5
t
PLH
t
PHL
Propagation Delay Time
(Input -
Σ
ODD,
Σ
EVEN)
(*) Voltagerangeis3.3V
±
0.3V
(**) Voltagerange is 5V
±
0.5V
5
4
ns
DC SPECIFICATIONS
Symbol
Parameter
Test Conditions
Value
Unit
V
CC
(V)
T
A
= 25
o
C
Min.
Typ.
2.1
3.15
3.85
-40 to 85
o
C
Min.
2.1
3.15
3.85
Max.
Max.
V
IH
High Level Input Voltage
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
5.5
5.5
V
O
= 0.1V or
V
CC
- 0.1 V
1.5
2.25
2.75
1.5
2.25
2.75
2.99
4.49
5.49
V
V
IL
Low Level Input Voltage
V
O
= 0.1V or
V
CC
- 0.1 V
0.9
1.35
1.65
0.9
1.35
1.65
V
V
OH
High Level Output
Voltage
V
I(*)
=
V
IH
or
V
IL
I
O
=-50
μ
A
I
O
=-50
μ
A
I
O
=-50
μ
A
I
O
=-12 mA
I
O
=-24 mA
I
O
=-24 mA
I
O
=50
μ
A
I
O
=50
μ
A
I
O
=50
μ
A
I
O
=12 mA
I
O
=24 mA
I
O
=24 mA
2.9
4.4
5.4
2.56
3.86
4.86
2.9
4.4
5.4
2.46
3.76
4.76
V
V
OL
Low Level Output
Voltage
V
I(*)
=
V
IH
or
V
IL
0.002
0.001
0.001
0.1
0.1
0.1
0.36
0.36
0.36
±
0.1
4
0.1
0.1
0.1
0.44
0.44
0.44
±
1
40
V
I
I
Input Leakage Current
Quiescent Supply
Current
Dynamic Output Current
(note 1, 2)
V
I
= V
CC
or GND
V
I
= V
CC
or GND
μ
A
μ
A
I
CC
I
OLD
I
OHD
5.5
V
OLD
= 1.65 V max
V
OHD
= 3.85 V min
75
-75
mA
mA
1)Maximumtestduration 2ms,oneoutput loaded attime
2)Incident waveswitchingisguaranteed ontransmission lineswithimpedances aslowas50
.
(*)Alloutputs loaded.
74AC280
4/8
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