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ZT489H - 5V 250K 256-Fanout RS-485收發器 | 亞信電子
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首頁 >> 產品訊息 >> I/O 連接控制器 >> RS-232/RS-485收發器 >> 5V RS485 收發器 >> ZT489H

 ZT489H -- 低功耗5V 250Kbps 256-Fanout RS485收發器 (具備14接腳)

The ZT485H series devices are 5V differential data line transceivers for RS485/RS422 communication that consist of one driver and one receiver with high level of ESD protection. They are designed for balanced transmission lines interface that meet ANSI standard TIA/EIA-485-A and ISO 8482:1987(E) specifications.

The ZT485H series devices spans out with half or full duplex, data rate guaranteed at 250K bit per second or 10Mbps, and allow one-eighth of an unit load that fan out 256 devices sharing a common bus. The I/Os are enhanced-electrostatic discharge (ESD) protected, exceeding ±15kV Human Body Model (HBM).

規格:

  • Meets or exceeds the requirements of ANSI Standard TIA/EIA-485-A and ISO 8482:1987(E) specifications for Vcc at +5V ±10%
  • Low quiescent current - 0.5mA typ., 1mA max
  • Low shutdown current (where applicable) - 1μA typical, 10μA max
  • Guaranteed standard data rate 250Kbps or 10Mbps
  • True Fail-Safe (Open, Short, Bus Idle) Receiver
  • -7V to +12V common-mode input voltage range
  • Half-Duplex mode configuration
  • Allows up to 1/8 unit load (256 devices) on the same common bus
  • Controlled driver output slew rate and receiver input filtering
  • Active-high driver enable and active-low receiver Enable
  • ESD protection on bus terminals
    • ±15kV Human Body Model (HBM)
  • Alternative replacement for MAX308x, MAX1308x, SN75HVD308x, SN65HVD308x
  • Standard fanout driving 1 unit load (32 devices) on the ZT485E Series

應用目標:
  • RS422/RS485 communications
  • Utility meters
  • Industrial process control
  • Building automation
  • Level translators
  • Transceivers for EMI-sensitive applications
  • Routers and HUBs
  • Industrial-controlled Local Area Networks
  • Industrial PCs, embedded PCs and peripherals
  • Industrial, security CATV and camera applications

 接腳配置與應用示意圖

ZT489H_Pin_Configuration.jpg

 選型指南

IO_5V_RS485_Selection_Guide.jpg

技術文件

 產品簡介,產品介紹和數據表

ZT489H 產品簡介327.8 KB2015-04-30
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ZT489H 數據表 2.1 MBV2.102015-05-13
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