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TPIC1021
LINPhysicalInterface
SLIS113–OCTOBER2004
electricalcharacteristics(持续)
V
SUP
=7vto27v,t
一个
=-40
°
Cto125
°
c(unlessotherwisenoted)
PARAMETERTESTCONDITIONSMINTYP
(1)
MAXUNIT
拉-downresistor125350800k
Ω
I
IL
低-levelinputcurrenten=0v-505µa
INHPIN
V
o
dcoutputvoltagetransientvoltage-0.3v
SUP
+0.3v
I
O
ouptutcurrent-502ma
R
在
OnstateresistanceBetweenV
SUP
andinh,inh=2ma2540100
Ω
驱动,normalorstandbymode
I
IKG
leakagecurrentlowpowermode,0<inh<v
SUP
-505µa
NWakePIN
V
IL
低-levelinputvoltage
(4)
-0.3v
SUP
-3.3v
V
IH
高-levelinputvoltage
(4)
V
SUP
-1v
SUP
+0.3v
拉-upcurrentnwake=0v-40-10-4µa
I
IKG
LeakagecurrentV
SUP
=nwake-505µa
THERMALSHUTDOWN
shutdownjunctionthermaltempera-185
°
C
ture
ACCHARACTERISTICS
D1Dutycycle1
(5)(6)
TH
rec(最大值)
=0.744
×
V
SUP
,0.396
TH
dom(最大值)
=0.581
×
V
SUP
,v
SUP
=
7.0vto18v,t
位
=50µs(20kbps),
SeeFigure4
D2Dutycycle2
(5)(6)
TH
rec(最大值)
=0.284
×
V
SUP
,0.581
TH
dom(最大值)
=0.422
×
V
SUP
,v
SUP
=
7.6vto18v,t
位
=50µs(20kbps),
SeeFigure4
D3Dutycycle3
(5)(6)
TH
rec(最大值)
=0.778
×
V
SUP
,0.417
TH
dom(最大值)
=0.616
×
V
SUP
,v
SUP
=
7.0vto18v,t
位
=96µs(10.4
kbps),seefigure4
D4Dutycycle4
(5)(6)
TH
rec(最大值)
=0.251
×
V
SUP
,0.590
TH
dom(最大值)
=0.389
×
V
SUP
,v
SUP
=
7.6vto18v,t
位
=96µs(10.4
kbps),seefigure4
t
rx_pdr
ReceiverrisingpropagationdelayR
L
=2.4k
Ω
,c
L
=20pf,see6µs
timeFigure4
t
rx_pdf
ReceiverfallingpropagationdelayR
L
=2.4k
Ω
,c
L
=20pf,see6µs
timeFigure4
t
rx_sym
symmetryofreceiverpropagationwrtfallingedge,seefigure4-22µs
delaytime(risingedge)
t
NWake
nwakefiltertimeforlocalwake-upseefigure42550100µs
t
LINBUS
linwake-upfiltertime(dominantseefigure42550100µs
timeforwake-upvialinbus)
t
DST
DominantstatetimeoutSeeFigure44914ms
(4)allvoltagesaredefinedwithrespecttoground;positivecurrentsflowintothetpic1021device.
(5)dutycycle=t
总线_rec(最小值)
/(2
×
t
位
)
(6)dutycycles:lindriverbusloadconditions(clinbus,rlinbus):load1=1nf,1k
Ω
;load2=6.8nf,660
Ω
;load3=10nf,500
Ω
.
dutycycles3and4aredefinedfor10.4kbpsoperation.thetpic1021alsomeetstheselowerspeedrequirements,whileitiscapable
ofofthehigherspeed20.0kbpsoperationasspecifiedbydutycycles1and2.saej2602derivespropagationdelayequationsfrom
thelin2.0dutycycledefinitions,fordetailspleaserefertothesaej2602specification.
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