XL65HVD08DR

The XL65HVD08DR/XL65HVD08P 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-8482 Estandard compliant devices. The wide supply voltage range and low quiescent current requirements allow the XL65HVD08DR/XL65HVD08P to operate from a 5-V power bus in the cable with as much as a 2V 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. The XL65HVD08 is a 3-V to 5.5-V, half-duplex, RS-485 transceiver suitable for data transmission up to 10 Mbps. This device has an active-high driver enable and active-low receiver enable. A standby current of less than 5 μA can be achieved by disabling both driver and receiver. Device operation is specified over a wide temperature range from -40 °C to +85 °C. Internal ESD protection circuits protect the transceiver bus terminals against ±16 kV Human Body Model (HBM) electrostatic discharges and all other pins up to ±4 kV. The XL65HVD08 provides internal biasing of the receiver input thresholds for open-circuit, busidle, or short- circuit failsafe conditions, and a typical receiver hysteresis of 35 mV.

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

Key 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
• Package option: XL65HVD08DR (SOP8), XL65HVD08P (DIP8)