MAX251CSD+T

MAXIM INTEGRATED PRODUCTS  MAX251CSD+T  芯片, RS232 收发器, 116KBPS, 5.5V, NSOIC-14

The is a +5V powered, isolated, RS232 driver/receiver in 14 pin NSOIC package. It is a chip set form the heart of a complete electronically isolated RS232 dual transmitter/receiver. By combining many functions on two chips, the cost and complexity required for an isolated digital interface is greatly reduced. Four low cost optocouplers, four capacitors, a diode and a small pot-core type transformer are all that are required to complete a 19.2k baud transceiver. Faster data rates are possible by using high-speed optocouplers. In addition to the driving and receiving circuitry for the optocouplers, the chip set includes a push-pull transformer driver to supply power to the interface"s isolated side. This device is used in bridge ground differentials and data links to analogue circuits.

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Supply voltage range is 4.5V to 5.5V

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Operating temperature range from 0°C to 70°C

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Isolated data interface

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Positive supply current is 2.5mA

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Shutdown power is 5µW

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2 transmitters and 2 receivers

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3-state enable time tEN is 3.5µS, 3-state disable time is 1µS

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Maximum threshold voltage is 2V