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Interface - Drivers, Receivers, Transceivers


The SN75LBC184( SN75LBC184DRG4 ) and SN65LBC184 are differential data line transceivers in the trade-standard footprint of the SN75176 with built-in protection against high-energy noise transients. This feature provides a substantial increase in reliability for better immunity to noise transients coupled to the data cable over most existing devices. Use of these circuits provides a reliable low-cost direct-coupled (with no isolation transformer) data line interface without requiring any external components. The SN75LBC184 and SN65LBC184 can withstand overvoltage transients of 400-W peak (typical). The conventional combination wave called out in IEC 61000-4-5 simulates the overvoltage transient and models a unidirectional surge caused by overvoltages from switching and secondary lightning transients. SN75LBC184DRG4 Features • Circuit Damage Protection of 400-W Peak (Typical) Per IEC 61000-4-5• Controlled Driver Output-Voltage Slew Rates Allow Longer Cable Stub Lengths• 250-kbps in Electrically Noisy Environments• Open-Circuit Fail-Safe Receiver Design• 1/4 Unit Load Allows for 128 Devices Connected on Bus• Thermal Shutdown Protection• Power-Up/-Down Glitch Protection• Each Transceiver Meets or Exceeds the Requirements of TIA/EIA-485 (RS-485) and ISO/IEC 8482:1993(E) Standards• Low Disabled Supply Current 300 µA Max• Pin Compatible With SN75176 SN75LBC184DRG4 Applications • Industrial Networks• Utility Meters• Motor Control

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