www.德州仪器.com
switchingcharacteristics,3.3-vnominalsupply
tb5d1m,tb5d2h
SLLS579B–SEPTEMBER2003–REVISEDMAY2004
overrecommendedoperatingconditionsunlessotherwisenoted
典型值
(1
parametertestconditionsminmaxunit
)
t
P1
propagationdelaytime,inputhightooutput
(2)
1.23.5
C
L
=5pf,seefigure1and
ns
Figure4
t
P2
propagationdelaytime,inputlowtooutput
(2)
1.23.5
∆
t
P
capacitivedelay0.010.03ns/pf
t
PHZ
propagationdelaytime,高-水平的-至-高-impedanceoutput812
t
PLZ
propagationdelaytime,低-水平的-至-高-impedanceoutput512
C
L
=5pf,seefigure2and
ns
Figure4
t
PZH
propagationdelaytime,高-阻抗-至-高-leveloutput512
t
PZL
propagationdelaytime,高-阻抗-至-低-leveloutput812
t
skew1
outputskew,|t
P1
-t
P2
|0.150.3
t
shew2
outputskew,|t
PHH
-t
PHL
|,|t
PLH
-t
PLL
|0.151.2
C
L
=5pf,seefigure1and
ns
Figure4
t
skew(pp)
部分-至-partskew
(3)
0.11
∆
t
skew
outputskew,differencebetweendrivers
(4)
0.3
t
TLH
risetime(20%-80%)0.72
C
L
=5pf,seefigure1and
ns
Figure4
t
THL
falltime(80%-20%)0.72
(1)alltypicalvaluesareat25
°
candwitha3.3-vsupply.
(2)parameterst
P1
andt
P2
aremeasuredfromthe1.5vpointoftheinputtothecrossoverpointoftheoutputs(seefigure1).
(3)t
skew(pp)
isthemagnitudeofthedifferenceindifferentialpropagationdelaytimes,t
P1
ort
P2
,betweenanyspecifiedoutputsoftwodevices
whenbothdevicesoperatewiththesamesupplyvoltage,atthesametemperature,andhaveidenticalpackagesandtestcircuits.
(4)
∆
t
skew
isthemagnitudeofthedifferenceindifferentialskewt
skew1
betweenanyspecifiedoutputsofasingledevice.
5