SP3088E中文资料Advanced Failsafe RS-485/RS-422 Transceivers 1/8th Unit Load, Slew-Rate Limited, ±15kV ESD-Protected数据手册MaxLinear规格书

描述 Description

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.

特性 Features

·Half Duplex RS485 Transceiver
·5.0V Single Supply Operation
·High Speed Data 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
·1μA shutdown mode
·Industry standard package footprints
·Robust ESD Specifications:
·±15KV Human Body Model
·±8KV IEC1000-4-2 Contact Discharge

应用 Application

Design ToolsTechnical Library·Application Notes