XR5488E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

The XR5486E-XR5488E 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. XR5488E is a half-duplex device while the 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 (IEC-61000-4-2), up to +/-8kV Contact Discharge (IEC-61000-4-2) and up to +/-15kV Human body Model. 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°C to +85°C) operating temperatures. Receivers have exceptionally high input impedance, which places only 1/8th the standard load on a 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 XR5487E 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 RS-485 Transceiver
·5V Single Supply Operation
·Ultra High Speed Data Rate – 52Mbps
·Higher Differential Driver Output Swing
·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
·1μA shutdown mode
·Industry standard package footprints
·Robust ESD Specifications:
·±15KV Human Body Model

应用 Application

Design ToolsSimulation Models·IBISModels