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RS-485 Transceiver with Integrated Transient Voltage Suppression

Availability: 12,621


Package | PIN: PDIP (P) | 8
Temp: I (-40 to 85)
Carrier: Partial Tube
Qty Price
1-9 $4.14
10-24 $3.72
25-99 $3.47
100-249 $3.04
250-499 $2.85
500-749 $2.42
750-999 $2.04
1000+ $1.95


  • Integrated Transient Voltage Suppression
  • ESD 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 Model
  • 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 and Power-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 Maximum
  • Pin Compatible With SN75176

Texas Instruments  SN65LBC184P

The SN75LBC184 and SN65LBC184 devices 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.