ISL83491IBZ

RS-485 线路驱动器和接收器，Intersil可靠的数据传输应用，使用长双绞线连接，带 Intersil 半双工和全双工 RS - 485 收发器，提供各种速度等级。### RS-485 线路驱动器和接收器

The is a BiCMOS powered Single Transceiver meets both the RS-485 and RS-422 standards for balanced communication. Unlike competitive devices, this family is specified for 10% tolerance supplies. It utilizes slew rate limited drivers which reduce EMI and minimizes reflections from improperly terminated transmission lines or un-terminated stubs in multi-drop and multipoint applications. Logic inputs accept signals in excess of 5.5V, making them compatible with 5V logic families. Receiver Rx inputs feature a fail-safe if open design, which ensures a logic high output if Rx inputs are floating. The device presents a single unit load to the RS-485 bus, which allows up to 32 transceivers on the network. Driver Tx outputs are short circuit protected, even for voltages exceeding the power supply voltage. Additionally, on-chip thermal shutdown circuitry disables the Tx outputs to prevent damage if power dissipation becomes excessive.

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Interoperable with 5V logic

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Single unit load allows up to 32 devices on the bus

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Slew rate limited versions for error free data transmission

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Full duplex and half duplex pin-outs

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Current limiting and thermal shutdown for driver overload protection

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Low current shutdown mode