SP1486E数据手册集成电路（IC）的驱动器接收器收发器规格书PDF

描述 Description

SP1486E is a half duplex differential line transceiver suitable for high speed bidirectional commu- nication 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 compli- ant packages are available for all models.PROFIBUS is in wide use in industrial control and automation applications and the SP\u0018486E is rug- gedized for use in harsh operating conditions. Receivers are specially designed to fail-safe to a logic high output state if the inputs are left un-driven 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 volt- age 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.

特性 Features

·Optimized for PROFIBUS Network Applications·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

应用 Application

Design ToolsPackagingPkg CodeDetailsQuantitiesDimensionsPDFNSOIC8·JEDEC Reference: MS-012
·MSL Pb-Free: L1 @ 260ºC
·MSL SnPb Eutectic: n/a
·ThetaJA: 128.4ºC/W (std); 96.8ºC/W (fused)