ISO15中文资料1Mbps、半双工、隔离式 RS-485 和 RS-422 收发器数据手册TI规格书

描述 Description

The ISO15 is an isolated half-duplex differential line transceiver while the ISO35 is an isolated full-duplex differential line driver and receiver for TIA/EIA 485/422 applications. The ISO15M and ISO35M have extended ambient temperature ratings of –55°C to 125°C while the ISO15 and ISO35 are specified over –40°C to 85°C.

These devices are ideal for long transmission lines because the ground loop is broken to allow for a much larger common-mode voltage range. The symmetrical barrier of the device is tested to provide isolatlion of 4000 VPK per VDE and 2500 VRMS per UL and CSA between the bus-line transceiver and the logic-level interface.

Any cabled I/O can be subjected to electrical noise transients from various sources. These noise transients can cause damage to the transceiver and/or nearby sensitive circuitry if they are of sufficient magnitude and duration. These isolated devices can significantly increase protection and reduce the risk of damage to expensive control circuits.

特性 Features

• Meets or Exceeds TIA/EIA RS-485 Requirements
• Signaling Rates up to 1 Mbps
• Low Bus Capacitance – 16 pF (Typical)
• Fail-safe Receiver for Bus Open, Short, Idle
• Safety and Regulatory Approvals
• 2500 VRMS Isolation Rating per UL 1577
• APPLICATIONS
• Chemical Production
• Motor and Motion Control
• Networked Security Stations

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