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SP1486E：5V, 15kV ESD, PROFIBUS RS485/RS422 Half-Duplex Transceiver
SP1486E is a half duplex differential line transceiver suitable for high speed bidirectional communication on multipoint bus transmission lines. Each device contains one differential driver and one differential receiver. Devices comply with TIA/EIA-485 and TIA/EIA-422 standards and also meet the higher drive and tighter skew requirements of PROFIBUS applications. Lead-free and RoHS compliant packages are available for all models. PROFIBUS is in wide use in industrial control and automation applications and the SP486E is ruggedized for use in harsh operating conditions. Receivers are specially designed to fail-safe to a logic high output state if the inputs are left undriven or shorted. All RS485 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 temperature. 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 5.0 V power supply and draw negligible quiescent power. Both driver and receiver can be enabled and disabled independently and the device enters a low power shutdown mode if both driver and receiver are disabled. The bus-pin outputs of disabled modules are in high impedance state. The high impedance driver output is maintained over the entire common-mode voltage range from -7 to +12V. For technical support or help choosing a product please email Exar’s Serial Technical Support group at: serialtechsupport@exar.com.
技术特性
Optimized for PROFIBUS Network Applications
Differential Output Voltage Exceed 2.1V ( 54Ω load)
High Speed Data Rate - 20 Mbps
Differential Output Voltage Exceed 2.1V ( 54Ω load)
High Speed Data Rate - 20 Mbps
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
5.0V Single Supply Operation
Ultra-low 400μA Quiescent Current
1μA shutdown mode
Industry standard package footprints
Robust ESD Specifications:
±15KV IEC1000-4-2 Air Gap and HBM
±8KV IEC1000-4-2 Contact Discharge
±15KV IEC1000-4-2 Air Gap and HBM
±8KV IEC1000-4-2 Contact Discharge
数据手册S
SP1486E Datasheet
应用指南
AN-207, Advantages of Enhanced Receiver Failsafe Features
ANI-13, RS-485 and RS-422 Physical Topologies
产品简介
Product Brief
Product Change Notification
十二月 2009
七月 2013
七月 2013
十月 2008
九月 2010
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 Half
数据传输速率(kbps) 20000
静电放电ESD(KV) 15
典型关断集成元件电路(µA) 1
接收开路故障防护 Yes
接收短路故障防护 Yes
关断 False
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
SP1486EEN-L NSOIC8 -40 85 Active
SP1486EEN-L/TR NSOIC8 -40 85 Active
SP1486EMN-L OBS
SP1486EMN-L/TR OBS
Other
十月 2008 SP4082E
十二月 2009 SP791
七月 2013 SP708
七月 2013 SP4082E
九月 2010 SP1486E
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