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SP3087E：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.
技术特性
Full Duplex RS485 Transceiver
5.0V Single Supply Operation
High Speed Date Rate
20Mbps 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
Industry standard package footprints
Robust ESD Specifications:
±15KV Human Body Model
±8KV IEC1000-4-2 Contact Discharge
±15KV Human Body Model
±8KV IEC1000-4-2 Contact Discharge
数据手册S
SP3087E Datasheet
应用指南
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
产品简介
Product Brief
Product Change Notification
三月 2012
十二月 2009
七月 2013
五月 2013
七月 2013
十月 2008
规格 参数
电源电压Vcc(V) 5
发送器数量(Tx) 1
接收器数量(Rx) 1
双工 Full
数据传输速率(kbps) 20000
静电放电ESD(KV) 15
接收开路故障防护 Yes
接收短路故障防护 Yes
关断 No
多点节点 256
订购型号
器件型号 封装编码 最低温度 最高温度 状态
SP3087EEN-L NSOIC8 -40 85 Active
SP3087EEN-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
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