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7.5ElectricalCharacteristics–Receiver
overrecommendedrangesofcommon-modeinputvoltage，supplyvoltage，andoperatingfree-airtemperature(unless
otherwisenoted)
PARAMETERTESTCONDITIONSMINTYP(1)MAXUNIT
VIT+Positive-goinginputthresholdvoltageVO2.7V，IO–0.4mA0.2V
VIT–Negative-goinginputthresholdvoltageVO0.5V，IO8mA–0.2(2)V
VhysInputhysteresisvoltage(VIT+–VIT–)50mV
VIKEnableInputclampvoltageII–18mA–1.5V
VOHHigh-leveloutputvoltageVID200mV，IOH–400μA，seeFigure112.7V
VOLLow-leveloutputvoltageVID–200mV，IOL8mA，seeFigure110.45V
IOZHigh-impedance-stateoutputcurrentVO0.4Vto2.4V±20μA
VI12V1
IILineinputcurrentOtherinput0V
(3)mA
VI–7V–0.8
IIHHigh-levelenableinputcurrentVIH2.7V20μA
IILLow-levelenableinputcurrentVIL0.4V–100μA
rI
InputresistanceVI12V12k?
IOSShort-circuitoutputcurrent–15–85mA
Outputsenabled4255
ICCSupplycurrent(totalpackage)NoloadmA
Outputsdisabled2635
(1)AlltypicalvaluesareatVCC5V，TA25°C.
(2)Thealgebraicconvention，inwhichthelesspositive(morenegative)limitisdesignatedminimum，isusedinthisdatasheetforcommon-
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modeinputvoltageandthresholdvoltagelevelsonly.
(3)Thisappliesforbothpoweronandpoweroff.RefertoEIAStandardTIA/EIA-485-Aforexactconditions.
7.6SwitchingCharacteristics–Driver
VCC5V，RL110Ω，TA25°C(unlessotherwisenoted)
PARAMETERTESTCONDITIONSMINTYPMAXUNIT
td(OD)Differential-outputdelaytimeRL54?，seeFigure121522ns
tt(OD)Differential-outputtransitiontimeRL54?，seeFigure122030ns
tPZHOutputenabletimetohighlevelSeeFigure1385120ns
tPZLOutputenabletimetolowlevelSeeFigure144060ns
tPHZOutputdisabletimefromhighlevelSeeFigure13150250ns
tPLZOutputdisabletimefromlowlevelSeeFigure142030ns
7.7SwitchingCharacteristics–Receiver
VCC5V，CL15pF，TA25°C
PARAMETERTESTCONDITIONSMINTYPMAXUNIT
tPLHPropagationdelaytime，low-tohigh-leveloutput2135
VID0to3V，seeFigure15ns
tPHLPropagationdelaytime，high-tolow-leveloutput2335
tPZHOutputenabletimetohighlevel1020
SeeFigure16ns
tPZLOutputenabletimetolowlevel1220
tPHZOutputdisabletimefromhighlevel2035
SeeFigure16ns
tPLZOutputdisabletimefromlowlevel1725
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