ADM3077EARZ

产品概述

The ADM3077EARZ is a Low Power RS-485/RS-422 Transceiver with ±15kV ESD protection suitable for full-duplex communication on multipoint bus transmission lines. The transceiver has a 1/8 unit load receiver input impedance, which allows up to 256 transceivers on a bus. Because only one driver should be enabled at any time, the output of a disabled or powered-down driver is tri-stated to avoid overloading the bus. The receiver inputs have a true fail-safe feature, which eliminates the need for external bias resistors and ensures a logic high output level when the inputs are open or shorted. This guarantees that the receiver outputs are in a known state before communication begins and when communication ceases. Excessive power dissipation caused by bus contention or by output shorting is prevented with a thermal shutdown circuit.

• TIA/EIA RS-485/RS-422 compliant
• ±15kV ESD protection on RS-485 input/output pins
• 16Mbps Data rate
• True fail-safe receiver inputs
• Up to 256 nodes on the bus
• Hot-swap input structure on DE and RE pins
• Reduced slew rates for low EMI
• Outputs high-Z when disabled or powered off
• Thermal shutdown and short-circuit protection

应用

电源管理, 工业, 自动化与过程控制, 照明, 通信与网络, 安全, 传感与仪器