SN75LBC184 High-Protection RS-485 Differential Transceiver – DIP-8 Package

The SN75LBC184 is a rugged RS-485 differential transceiver engineered for industrial-grade data communication over long cable runs and electrically noisy environments. Designed for reliable multi-point bus networks, this device combines transient-voltage suppression, ESD resistance, controlled slew rates, and low power usage, making it a smart upgrade over standard RS-485 transceivers.

This RS-485 driver/receiver delivers stable communication at speeds up to 250kbps, supports up to 128 nodes on a bus, and protects your interface hardware against surge energy and cable-borne noise. With built-in thermal shutdown, fail-safe receiver circuitry, and glitch-free power transitions, the SN75LBC184 is widely used in industrial automation, motor-drive control, metering systems, building management networks, and utility monitoring.

Available in a compact DIP-8 through-hole package, it is easy to integrate into repairs, upgrades, and new PCB designs.

Key Performance Advantages

• Industrial-grade RS-485 interface for long-distance differential communication

• Integrated transient surge suppression for enhanced cable noise immunity

• ±30kV ESD protection on bus pins for maximum hardware safety

• 400W peak surge durability (IEC 61000-4-5) against switching spikes and lightning events

• Controlled slew-rate driver outputs for extended cable stub lengths

• Operates reliably in noisy electrical environments up to 250kbps

• Fail-safe receiver design prevents bus-floating communication errors

• Supports 1/4-unit load — up to 128 devices per network bus

• Thermal shutdown + power-up/power-down glitch protection

• Direct-coupled data-line interface — no external protection components needed

Typical Industrial Uses

• RS-485 networking and communication buses

• Industrial automation and motor-drive control

• Smart metering and utility monitoring

• Building management and HVAC systems

• Embedded controllers and PLC networks
  

  Parameter	Value
  Interface Standard	RS-485 Differential
  Data Rate	250 kbps (noisy environments)
  Surge Protection	400W peak (typ.)
  ESD Rating	±30kV IEC 61000-4-2
  Bus Load	1/4 Unit Load (128 nodes)
  Protection	Thermal shutdown, fail-safe receiver, glitch-free startup
  Output Drive	Differential
  Package Type	DIP-8 (Through-Hole)
  Applications	Industrial, Networking, Metering, Motor Control