器件名称: XR33032/35/38
功能描述: 支持250kbps, 1Mbps, 和10Mbps数率，完全兼容TIA/EIA-485和TIA / EIA-422标准。模拟总线引脚具备增强型±15kV 的严苛的ESD保护 (±15kV IEC 61000-4-2空气放电、±8kV IEC 61000-4-2接触放电, ±15kV人体模式)，具有DC 或AC±18V的容错能力。
文件大小: 397.54KB 共19页
简 介:XR33032/35/38
WIDE SUPPLY 18V TOLERANT RS-485/RS-422 TRANSCEIVERS
FEBRUARY 2014 REV. 1.0.0
GENERAL DESCRIPTION
The XR33032/35/38 family of high performance half duplex RS-485 transceivers are optimized to operate over a wide range of supply voltage, from +2.8V to +5.5V. The analog bus pins can withstand direct shorts up to ±18V, and are protected against ESD events up to ±15kV. In an isolated application it may be more efficient to use a remote power supply rather than generating an isolated supply at every node. The XR33032/35/38 transceivers can operate with more than 2V IR drop in the cable when utilizing a remote 5V power supply. The transceivers draw less than 600A, and typically only 300A when idling with the receivers active. The receivers include full fail-safe circuitry, guaranteeing a logic-high receiver output when the receiver inputs are open, shorted, or undriven. The receiver input impedance is 96k (1/8 unit load), allowing up to 256 devices on the bus while preserving the full signal margin. The drivers are protected by short circuit detection as well as thermal shutdown, and maintain high impedance in shutdown or when powered off. The XR33032 and XR33035 drivers are slew limited for reduced EMI and error-free communication over long or unterminated data cables. The DE and RE pins include hot swap circuitry to prevent false transitions on the bus during power-up or live insertion, and can enter a low current shutdown mode (40nA typically) for extreme power sav……
