74AC280(1998) 查看數據表（PDF） - STMicroelectronics
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74AC280 Datasheet PDF : 8 Pages
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74AC280
DC SPECIFICATIONS
Symb ol
Parameter
Test Conditions
VCC
(V)
Valu e
TA = 25 oC
-40 to 85 oC
Min. T yp. Max. Min. Max.
VIH High Level Input Voltage 3.0
4.5
VO = 0.1 V or
VCC - 0.1 V
2.1 1.5
3.15 2.25
2.1
3.15
5.5
3.85 2.75
3.85
VIL Low Level Input Voltage
3.0
4.5
VO = 0.1 V or
VCC - 0.1 V
1.5 0.9
0.9
2.25 1.35
1.35
5.5
2.75 1.65
1.65
VOH High Level Output
Voltage
VOL Low Level Output
Voltage
II Input Leakage Current
ICC Quiescent Supply
Current
3.0
IO=-50 µA 2.9 2.99
2.9
4.5
VI(* ) = IO=-50 µA 4.4 4.49
5.5 VIH or IO=-50 µA 5.4 5.49
3.0
VIL IO=-12 mA 2.56
4.4
5.4
2.46
4.5
IO=-24 mA 3.86
3.76
5.5
IO=-24 mA 4.86
4.76
3.0
IO=50 µA
0.002 0.1
0.1
4.5
VI(* ) = IO=50 µA
5.5
VIH or IO=50 µA
3.0
VIL
IO=12 mA
0.001 0.1
0.001 0.1
0.36
0.1
0.1
0.44
4.5
IO=24 mA
0.36
0.44
5.5
IO=24 mA
0.36
0.44
5.5
VI = VCC or GND
±0.1
±1
5.5
VI = VCC or GND
4
40
IOLD Dynamic Output Current
5.5
VOLD = 1.65 V max
75
IOHD (note 1, 2)
VOHD = 3.85 V min
-75
1) Maximum test duration 2ms, one output loaded attime
2) Incident wave switching is guaranteed on transmission lines with impedances as low as 50 Ω.
(*) All outputs loaded.
Unit
V
V
V
V
µA
µA
mA
mA
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500 Ω, Input tr = tf =3 ns)
Symb ol
Parameter
tPLH Propagation Delay Time
tPHL (Input - ΣODD, ΣEVEN)
(*) Voltage range is 3.3V ± 0.3V
(**) Voltage range is 5V ± 0.5V
T est Con ditio n
VCC
(V)
3.3(*)
5.0(**)
Valu e
TA = 25 oC
-40 to 85 oC
Min. T yp. Max. Min. Max.
1.5 5 17.0 1 18.5
1.5 4 13.0 1 14.5
Unit
ns
CAPACITIVE CHARACTERISTICS
Symb ol
Parameter
Test Conditions
VCC
(V)
Valu e
TA = 25 oC
-40 to 85 oC
Min. T yp. Max. Min. Max.
Unit
CIN Input Capacitance
5.0
4
pF
CPD Power Dissipation
5.0
Capacitance (note 1)
27
pF
1) CPD isdefined as the value of the IC’sinternal equivalent capacitance which is calculated fromthe operating current consumption without load. (Referto
Test Circuit).Average operating current can be obtained by the following equation. ICC(opr) = CPD • VCC • fIN + ICC
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