SN75172

四路差动线路驱动器

The is a monolithic quadruple differential line driver with 3-state outputs. It is designed to meet the requirements of ANSI Standards EIA/A-422-B and RS-485 and ITU Recommendation V.11. The device is optimized for balanced multipoint bus transmission at rates of up to 4 megabaud. Each driver features wide positive and negative common-mode output voltage ranges, making it suitable for party-line applications in noisy environments.

The SN75172 provides positive- and negative-current limiting and thermal shutdown for protection from line fault conditions on the transmission bus line. Shutdown occurs at a junction temperature of approximately 150°C. This device offers optimum performance when used with the SN75173 or SN75175 quadruple differential line receivers.

The SN75172 is characterized for operation from 0°C to 70°C.

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Meets or Exceeds the Requirements of ANSI Standards EIA/TIA-422-B and RS-485 and ITU Recommendation V.11

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Designed for Multipoint Transmission on Long Bus Lines in Noisy Environments

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3-State Outputs

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Common-Mode Output Voltage Range of

-7 V to 12 V

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Active-High and Active-Low Enables

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Thermal Shutdown Protection

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Positive- and Negative-Current Limiting

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Operates From Single 5-V Supply

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Logically Interchangeable With AM26LS31