SN65HVD08DR UART Interface IC RS-485 Interface IC 3.3/5-V RS-485 Transceiver

SN65HVD08DR UART Interface IC RS-485 Interface IC 3.3/5-V RS-485 Transceiver

1 Features

• Operates With a 3-V to 5.5-V Supply

• Consumes Less Than 90-mW Quiescent Power

• Open-Circuit, Short-Circuit, and Idle-Bus Failsafe Receiver

• 1/8th Unit-Load (up to 256 nodes on the bus)

• Bus-Pin ESD Protection Exceeds 16-kV HBM

• Driver Output Voltage Slew-Rate Limited for Optimum Signal Quality at 10 Mbps

• Electrically Compatible With ANSI TIA/EIA-485 Standard

2 Applications

• Data Transmission With Remote Stations Powered From the Host

• Isolated Multipoint Data Buses

• Industrial Process Control Networks

• Point-of-Sale Networks

• Electric Utility Metering

The SN65HVD08 combines a 3-state differential line driver and differential line receiver designed for balanced data transmission and interoperation with ANSI TIA/EIA-485-A and ISO-8482E standard- compliant devices.

The wide supply voltage range and low quiescent current requirements allow the SN65HVD08s to operate from a 5-V power bus in the cable with as much as a 2-V line voltage drop. Busing power in the cable can alleviate the need for isolated power to be generated at each connection of a ground-isolated bus.

The driver differential outputs and receiver differential inputs connect internally to form a differential input/output (I/O) bus port that is designed to offer minimum loading to the bus whenever the driver is disabled or not powered. The drivers and receivers have active-high and active-low enables respectively, which can be externally connected together to function as a direction control.

Device Information