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參數(shù)資料
| 型號(hào)： | SP1485ECN-L/TR |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX RS485 DIFF ESD 8SOIC |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | 收發(fā)器 |
| 驅(qū)動(dòng)器/接收器數(shù)： | 1/1 |
| 規(guī)程： | RS422，RS485 |
| 電源電壓： | 4.25 V ~ 5.25 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SOICN |
| 包裝： | 帶卷 (TR) |
Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-707 www.exar.com
SP48E-485E_03_05243
6
AlogicLOWonRE(pin2)willenablethe
receiver,alogicHIGHonRE(pin2)willdis-
ablethereceiver.
ThereceiverfortheSP1481EandSP1485E
willoperateuptoatleast20Mbps.Thereceiver
foreachofthetwodevicesisequippedwiththe
fail-safefeature.Fail-safeguaranteesthatthe
receiveroutputwillbeinaHIGHstatewhen
theinputisleftunconnected.
shutdown Mode
sp1481e
TheSP1481EisequippedwithaShutdown
mode.ToenabletheShutdownstate,both
the driver and receiver must be disabled
simultaneously.
AlogicLOWonDE(pin3)andalogicHIGH
onRE(pin2)willputtheSP1481EintoShut-
downmode.InShutdown,supplycurrentwill
droptotypically1μA.
description
TheSP1481EandSP1485Earehalf-duplex
differentialtransceiversthatmeettherequire-
mentsofRS-485andRS-422.Fabricated
withaExarproprietaryBiCMOSprocess,
theseproductsrequireafractionofthepower
ofolderbipolardesigns.
TheRS-485standardisidealformulti-drop
applicationsandforlong-distanceinterfaces.
RS-485allowsupto32driversand32receiv-
erstobeconnectedtoadatabus,makingit
anidealchoiceformulti-dropapplications.
Sincethecablingcanbeaslongas4,000
feet,RS-485transceiversareequippedwith
awide(-7Vto+12V)commonmoderange
to accommodate ground potential differ-
ences. Because RS-485 is a differential
interface,dataisvirtuallyimmunetonoise
inthetransmissionline.
drivers
The driver outputs of the SP1481E and
SP1485Earedifferentialoutputsmeetingthe
RS-485andRS-422standards.Thetypical
voltageoutputswingwithnoloadwillbe0
Voltsto+5Volts.Withworstcaseloading
of54acrossthedifferentialoutputs,the
driverscanmaintaingreaterthan1.5Vvolt-
agelevels.ThedriversoftheSP1481E,and
SP1485Ehaveanenablecontrollinewhich
isactiveHIGH.AlogicHIGHonDE(pin3)
willenablethedifferentialdriveroutputs.A
logic LOW on DE (pin 3) will tri-state the
driveroutputs.
The transmitters of the SP1481E and
SP1485E will operate up to at least
20Mbps.
receivers
TheSP1481EandSP1485Ereceivershave
differential inputs with an input sensitivity
aslowas±200mV.Inputimpedanceofthe
receiversistypically15k(12kminimum).
Awidecommonmoderangeof-7Vto+12V
allowsforlargegroundpotentialdifferences
between systems. The receivers of the
SP1481E and SP1485E have a tri-state
enablecontrolpin.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP1485ECP | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Enhanced Low Power Half-Duplex RS-485 Transceivers |
| SP1485ECP-L | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| SP1485EEN | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Enhanced Low Power Half-Duplex RS-485 Transceivers |
| SP1485EEN-L | 功能描述:RS-485接口IC RS485 no shutdown temp -40C to 85C RoHS:否 制造商:Texas Instruments 數(shù)據(jù)速率:250 Kbps 工作電源電壓:3.3 V 電源電流:750 uA 工作溫度范圍:- 40 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| SP1485EEN-L/TR | 功能描述:RS-485接口IC 20MBPS HALF-DUPLEX RS-485 -40-85C RoHS:否 制造商:Texas Instruments 數(shù)據(jù)速率:250 Kbps 工作電源電壓:3.3 V 電源電流:750 uA 工作溫度范圍:- 40 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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