RS-485 и RS-422 MAX3157CAI+

Приемопередатчик RS422 , RS485, 4.75В-5.25В питание, 1 драйвер, SSOP-28

The MAX3157CAI+ is a high CMRR RS485 transceiver with ±50V isolation in 28 pin SSOP package. The high CMRR RS485/RS422 data communications interface providing ±50V isolation in a hybrid microcircuit. A single +5V supply on the logic side powers both sides of the interface with external ±50V capacitors transferring power from the logic side to the isolated side. Each MAX3157 contains one transmitter and one receiver and operates at a data rates up to 250Kbps. Drivers are short-circuit current limited and protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high impedance state. The receiver input has a fail-safe feature that has a logic high receiver output if the inputs are open, shorted or connected to a terminated transmission line with all drivers disabled.

• Supply voltage range is 4.75V to 5.25V
• Operating temperature range from 0°C to 70°C
• Low cost replacement for opto-isolated transceivers
• True fail safe receiver while maintaining EIA
• TIA485 compliance
• Pin selectable full
• half duplex operation
• Phase controls to correct for twisted pair reversal
• Low power shutdown mode reduces supply current to 25µA
• 25mA of supply current when unloaded or when fully loaded with the driver disabled

• Slew rate limited reduced EMI
• Automated Test Equipment (ATE); Building Energy Management (HVACBuilding Security
• Remote Cameras;
• High-Speed Access (Telecom); Industrial Sensor Transmitters
• Transducersl Motor and Motion Controll
• POS Terminalsl Programmable Logic Controllersl Remote Camerasl Telecom Switches; Test and Measurement Equipment; X-Ray and Ultrasound Diagnostics

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