MAX3460ESD+

MAXIM INTEGRATED PRODUCTS  MAX3460ESD+  芯片, RS422/RS485 收发器, 20MBPS, 5.25V, NSOIC

The is a +5V, fail-safe, 20Mbps, profibus RS485/RS422 transceiver in 14 pin NSOIC package. It is designed to meet TIA/EIA-422-B, TIA/EIA-485-A, V.11 and X.27 standards. The transceiver complies with the profibus specification providing +2.1V output level with a 54ohm load, 20Mbps data rate and output skew less than 2ns. It contains one three-state differential line driver and one differential input line receiver. The device operate from a +5V supply and has a true fail-safe circuitry which gives a logic-high receiver output when the receiver inputs are open or shorted. This enables all receiver outputs on a terminated bus to output logic highs when all transmitters are disabled. It has a 1/4 standard unit load receiver input impedance that allows 128 transceivers on the bus. This device is widely used in high speed RS485 communications, high speed RS422 communications, level translators and profibus applications.

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Supply voltage range is 4.75V to 5.25V

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Operating temperature range from -40°C to 85°C

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Transmitter and receiver propagation delay is 20ns

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Low supply current requirements 2.5mA typ

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Available with hot-swap versions, shutdown supply current is 1µA

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Features receiver/driver enable & receiver/driver phase select function

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Available with low power shutdown function and independent SHDN pin

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Designed for multipoint transmissions on long or noisy bus lines

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Full duplex communication

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Current limiting and thermal shutdown for driver overload protection