74ACT280M(1998) 查看數據表（PDF） - STMicroelectronics
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74ACT280M Datasheet PDF : 8 Pages
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74ACT280
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 5V ± 0.5V
T est Con ditio n
VCC
(V)
5.0(*)
Valu e
TA = 25 oC
-40 to 85 oC
Min. T yp. Max. Min. Max.
3.0 8.5 13.0 2.0 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)
75
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
TEST CIRCUIT
CL = 50 pF or equivalent (includes jigand probe capacitance)
RL = R1 = 500Ω orequivalent
RT = ZOUT of pulse generator (typically 50Ω)
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