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SP3085E：Advanced Failsafe RS-485/RS-422 Transceivers 1/8th Unit Load, Slew-Rate Limited, ±15kV ESD-Protected
The SP3080E-SP3088E family of RS-485 devices are designed for reliable, bidirectional communication on multipoint bus transmission lines. Each device contains one differential driver and one differential receiver. The SP3082E, SP3085E and SP3088E are half-duplex devices; other part numbers are full-duplex. All devices comply with TIA/EIA-485 and TIA/EIA-422 standards. Lead-free and RoHS compliant packages are available for all models. These devices are ruggedized for use in harsh operating conditions over the entire common-mode voltage range from -7V to +12V. Receivers are specially designed to fail-safe to a logic high output state if the inputs are left un-driven or shorted. All RS-485 bus-pins are protected against severe ESD events up to ±15kV (Air-Gap and Human Body Model) and up to ±8kV Contact Discharge (IEC 1000- 4-2). Drivers are protected from excess current flow caused by bus contention or output short-circuits by both an internal current limit and a thermal-overload shutdown. Devices are rated for industrial (-40 to +85oC) operating temperatures. Receivers have exceptionally high input impedance, which places only 1/8th the standard load on a shared bus. Up to 256 transceivers may coexist while preserving full signal margin. All devices operate from a single 5.0V power supply and draw negligible quiescent power. All versions except the SP3081E, SP3084E, and SP3087E may independently enable and disable their driver and receiver and enter a low power shutdown mode if both driver and receiver are disabled. All outputs maintain high impedance in shutdown or when powered-off. For technical support or help choosing a product please email Exar’s Serial Technical Support group at: serialtechsupport@exar.com.
技術(shù)特性
Half Duplex RS485 Transceiver
5.0V Single Supply Operation
Slew rate controlled driver, Low EMI
500kbps data rate
Receiver failsafe on open, short or terminated lines
1/8th Unit Load, 256 transceivers on bus
Hot Swap glitch protection on control inputs
Driver short circuit current limit and thermal shutdown for overload protection
Ultra-low 400μA Quiescent Current
1μA shutdown mode
Industry standard package footprints
Robust ESD Specifications:
±15KV Human Body Model
±8KV IEC1000-4-2 Contact Discharge
數(shù)據(jù)手冊S
SP3085E Datasheet
應(yīng)用指南
AN-207, Advantages of Enhanced Receiver Failsafe Features
AN-214, RS-485 Transient vs. Fault Protection
ANI-13, RS-485 and RS-422 Physical Topologies
ANI-20, Advanced Features of the SP3070E-SP3078E and SP3080E- SP3088E High Performance RS-485 Transceivers
DAN-190, Exar UARTs in RS-485 Applications
產(chǎn)品簡介
Product Brief
Product Change Notification
三月 2012
十二月 2009
七月 2013
五月 2013
七月 2013
十月 2008
規(guī)格 參數(shù)
電源電壓Vcc(V) 5
發(fā)送器數(shù)量(Tx) 1
接收器數(shù)量(Rx) 1
雙工 Half
數(shù)據(jù)傳輸速率(kbps) 500
靜電放電ESD(KV) 15
典型關(guān)斷集成元件電路(μA) 1
接收開路故障防護(hù) Yes
接收短路故障防護(hù) Yes
關(guān)斷 Yes
多點(diǎn)節(jié)點(diǎn) 256
訂購型號(hào)
器件型號(hào) 封裝編碼 最低溫度 最高溫度 狀態(tài)
SP3085EEN-L NSOIC8 -40 85 Active
SP3085EEN-L/TR NSOIC8 -40 85 Active
Other
三月 2012 SP4082E
十月 2008 SP4082E
十二月 2009 SP791
七月 2013 SP708
五月 2013 SP3088E
七月 2013 SP4082E
深圳市燁弘軒電子有限公司，我司2011年成立于中國經(jīng)濟(jì)特區(qū)深圳.我司專注于為全球電子企業(yè)提供優(yōu)質(zhì)的電子零件供應(yīng)服務(wù)，竭力打造全球品牌元器件零售與批量供應(yīng)中心。專業(yè)經(jīng)營各類電子元器件（集成電路IC，存儲(chǔ)芯片，分立器件,電源,無源元件,連接器,繼電器,傳感器,光電子,開關(guān),保險(xiǎn)元件,緊固件,開發(fā)工具,變壓器,測試與測量等）。 我們以低成本提供全方位一站式電子元件供應(yīng)鏈采購方案，包括但不僅限于電子元件緊急物料搜尋，電子元件齊套供應(yīng)、電子元件降低成本的長期供應(yīng)，庫存寄售等一系列供應(yīng)鏈解決方案。優(yōu)勢供應(yīng)各類電子組件.
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