SN75LBC184DR

TI SN75LBC184DR

  • - 7SE
Table of Contents

Overview

The SN75LBC184DR is an RS-485/RS-422 differential line transceiver designed for robust, long-distance, and noise-tolerant data transmission. Operating from a single 5 V supply, the device supports half-duplex communication and provides a wide common-mode range for demanding industrial environments. With extended ESD protection, low power consumption, and the ability to drive long twisted-pair cables, SN75LBC184DR is widely used in factory automation, industrial control networks, HVAC systems, metering, and distributed sensing.

Core Parameters

SN75LBC184DR
ParameterSpecification
Supply Voltage (VCC)4.75 V to 5.25 V
Driver Output Voltage Range±7 V
Receiver Input Voltage Range–7 V to +12 V
Data RateUp to 5 Mbps
Receiver Input Sensitivity±200 mV
Differential Output Voltage1.5 V min (with RL = 54 Ω)
Receiver Input Resistance≥ 12 kΩ
ESD Protection±15 kV (HBM)
Operating Temperature–40°C to +85°C
Package TypeSOIC-8 (DR marking)

Features

  • Compatible with RS-485 and RS-422 standards
  • ±15 kV ESD protection for robust handling and field reliability
  • Wide receiver input voltage range (–7 V to +12 V) suitable for harsh electrical environments
  • Typical 5 Mbps data rate, supporting fast point-to-point or bus communication
  • Fail-safe receiver ensures stable logic high output when the bus is idle or open
  • Low power consumption with standby mode for reduced system energy
  • Supports up to 32 transceivers on a single bus (unit-load compliant)
  • Designed for long-distance differential signaling, especially over twisted-pair cables

Typical Application Scenarios

ApplicationWhy SN75LBC184DR Fits
Industrial RS-485 NetworksHigh ESD protection and long-distance signaling withstand noisy factory environments
Building Automation & HVACReliable half-duplex communication for distributed sensors and controllers
Utility Meters & Smart Energy DevicesStable data transmission with fail-safe receiver behavior
Motor Drives & InvertersHandles wide common-mode voltage swings caused by high-power equipment
Remote I/O ModulesLow power consumption and strong noise immunity suit long cable runs
Security & Access ControlSupports multi-drop buses and robust bus protection

Performance Comparison

FeatureSN75LBC184DRStandard RS-485 TransceiverEnhanced Industrial RS-485
ESD Rating±15 kV HBM~±2–8 kVHigh
Data RateUp to 5 Mbps1–5 MbpsSimilar
Input Voltage Range–7 V to +12 VNarrowerWide
Bus Load Support32 nodes32 nodes128 nodes (high-drive variants)
Fail-safeYesVariesYes (newer devices)

SN75LBC184DR remains a solid and reliable option for stable RS-485/RS-422 communication, especially where ESD robustness and harsh-environment tolerance are priorities.

Conclusion

The SN75LBC184DR provides reliable, noise-immune differential communication for industrial and commercial systems. With ±15 kV ESD protection, wide input tolerance, 5 V operation, and 5 Mbps data rate, it excels in long-distance signaling, factory networks, and distributed sensing. Its combination of robustness, compatibility with RS-485/RS-422 standards, and low power consumption makes it a dependable choice for both legacy equipment and modern industrial designs.

Manufacturer Profile

TI chip

Texas Instruments (TI) is a global leader in analog and mixed-signal semiconductors, providing reliable industrial communication solutions such as RS-485/RS-422 transceivers. The SN75LBC184DR is part of TI’s long-standing industrial connectivity portfolio, known for durability, ESD robustness, and stable operation in electrically demanding environments.

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