SN65LBC184, SN75LBC184DIFFERENTIAL TRANSCEIVERWITH TRANSIENT VOLTAGE SUPPRESSIONSLLS236E – OCTOBER 1996 – REVISED APRIL 20021POST OFFICE BOX 655303 • DALLAS, TEXAS 75265DIntegrated Transient Voltage SuppressionDESD Protection for Bus Terminals Exceeds: ±30 kV IEC 61000-4-2, Contact Discharge ±15 kV IEC 61000-4-2, Air-Gap Discharge ±15 kV EIA/JEDEC Human Body ModelDCircuit Damage Protection of 400-W Peak(Typical) Per IEC 61000-4-5DControlled Driver Output-Voltage SlewRates Allow Longer Cable Stub LengthsD250-kbps in Electrically NoisyEnvironmentsDOpen-Circuit Fail-Safe Receiver DesignD1/4 Unit Load Allows for 128 DevicesConnected on BusDThermal Shutdown ProtectionDPower-Up/-Down Glitch ProtectionDEach Transceiver Meets or Exceeds theRequirements of TIA/EIA-485 (RS-485) andISO/IEC 8482:1993(E) StandardsDLow Disabled Supply Current 300 µA MaxDPin Compatible With SN75176DApplications:– Industrial Networks– Utility Meters– Motor Control descriptionThe SN75LBC184 and SN65LBC184 are differ-ential data line transceivers in the trade-standardfootprint of the SN75176 with built-in protectionagainst high-energy noise transients. This featureprovides a substantial increase in reliability forbetter immunity to noise transients coupled to thedata cable over most existing devices. Use ofthese circuits provides a reliable low-costdirect-coupled (with no isolation transformer) dataline interface without requiring any externalcomponents.The SN75LBC184 and SN65LBC184 can with-stand overvoltage transients of 400-W peak(typical). The conventional combination wavecalled out in IEC 61000-4-5 simulates theovervoltage transient and models a unidirectionalsurge caused by overvoltages from switching andsecondary lightning transients.Please be aware that an important notice concern...
