MAX1487CPA+ RS-485/RS-422 transceiver IC

Description

The MAX1487 RS485 Transceiver is a low-power half-duplex transceiver for RS-485 and RS-422 bus communication and is capable of data rates up to 2.5Mbs. The IC contains both a driver and receiver for the RS-485 bus together with protection against short-circuits and thermal overload. The MAX1487 also features a quarter-unit-load receiver input impedance, which allows up to 128 transceivers on the RS-485 bus. Features Low Quiescent Current – 230µA -7V to +12V Common-Mode Input Voltage Range Three State Outputs 30ns Propagation Delay, 5ns Skew Operates from a Single 5V Supply Up to 128 Transceivers on the Bus Current Limiting and Thermal Shutdown for Driver Overload Protection Pin Number Description 1 RO – Receiver Output 2 RE – Receiver Output Enable 3 DE – Driver Output Enable 4 DI – Driver Input 5 GND – Ground 6 A – Noninverting Receiver Input 7 B – Inverting Receiver Input 8 Vcc – +5V Power Supply Technical Specifications Physical Case/Package PDIP Contact Plating Tin Mount Through Hole Number of Pins 8 Technical Data Rate 2.5 Mbps Interface RS-422, RS-485 Logic Function Transceiver Max Operating Temperature 70 °C Max Power Dissipation 727 mW Max Supply Voltage 5.25 V Min Operating Temperature 0 °C Min Supply Voltage 4.75 V Nominal Supply Current 500 µA Number of Drivers 1 Number of Receivers 1 Number of Transceivers 1 Number of Transmitters 1 Operating Supply Voltage 5 V Packaging Bulk Simplex/Duplex Half Duplex MAX1487 Datasheet

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