The SN55LBC176, SN65LBC176, SN65LBC176Q, and SN75LBC176 differential bus transceivers are monolithic, integrated circuits designed for bidirectional data communication on multipoint bus-transmission lines. They are designed for balanced transmission lines and meet ANSI Standard TIA/EIA-485-A (RS-485) and ISO 8482:1987(E).

The SN55LBC176, SN65LBC176, SN65LBC176Q, and SN75LBC176 combine a 3-state, differential line driver and a differential input line receiver, both of which operate from a single 5-V power supply. The driver and receiver have active-high and active-low enables, respectively, which can externally connect together to function as a direction control. The driver differential outputs and the receiver differential inputs connect internally to form a differential input/output (I/O) bus port that is designed to offer minimum loading to the bus whenever the driver is disabled or V_CC = 0. This port features wide positive and negative common-mode voltage ranges, making the device suitable for party-line applications. Very low device supply current can be achieved by disabling the driver and the receiver.

These transceivers are suitable for ANSI Standard TIA/EIA-485 (RS-485) and ISO 8482 applications to the extent that they are specified in the operating conditions and characteristics section of this data sheet. Certain limits contained in TIA/EIA-485-A and ISO 8482:1987 (E) are not met or cannot be tested over the entire military temperature range.

The SN55LBC176 is characterized for operation from –55°C to 125°C. The SN65LBC176 is characterized for operation from –40°C to 85°C, and the SN65LBC176Q is characterized for operation from –40°C to 125°C. The SN75LBC176 is characterized for operation from 0°C to 70°C.

• Bidirectional Transceiver
• Meets or Exceeds the Requirements of ANSI Standard TIA/EIA.485.A and ISO 8482:1987(E)
• High-Speed Low-Power LinBiCMOS? Circuitry
• Designed for High-Speed Operation in Both Serial and Parallel Applications
• Low Skew
• Designed for Multipoint Transmission on Long Bus Lines in Noisy Environments
• Very Low Disabled Supply Current . . . 200 μA Maximum
• Wide Positive and Negative Input/Output Bus Voltage Ranges
• Thermal-Shutdown Protection
• Driver Positive-and Negative-Current Limiting
• Open-Circuit Failsafe Receiver Design
• Receiver Input Sensitivity . . . ±200 mV Max
• Receiver Input Hysteresis . . . 50 mV Typ
• Operates From a Single 5-V Supply
• Glitch-Free Power-Up and Power-Down Protection
• Available in Q-Temp Automotive HighRel Automotive ApplicationsConfiguration Control / Print Support Qualification to Automotive Standards

LinBiCMOS and LinASIC are trademarks of Texas Instruments Incorporated.

• Number of receivers
• 1
• Number of transmitters
• 1
• Duplex
• Half
• Supply voltage (Nom) (V)
• 5
• Signaling rate (Max) (Mbps)
• 10
• IEC 61000-4-2 contact (+/- kV)
• —
• Fault protection (V)
• -10 to 15
• Common mode range
• -7 to 12
• Number of nodes
• 32
• Isolated
• No
• ICC (Max) (mA)
• 1.5
• Rating
• Automotive, Catalog
• Operating temperature range (C)
• -40 to 125, -40 to 85

SN65LBC176的完整型号有：SN65LBC176D、SN65LBC176DR、SN65LBC176P、SN65LBC176QD、SN65LBC176QDG4、SN65LBC176QDR、SN65LBC176QDRG4，以下是这些产品的关键参数及官网采购报价：

SN65LBC176D，工作温度：-40 to 85，封装：SOIC (D)-8，包装数量MPQ：75个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN65LBC176D的批量USD价格：1.351（1000+）

SN65LBC176DR，工作温度：-40 to 85，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN65LBC176DR的批量USD价格：1.151（1000+）

SN65LBC176P，工作温度：-40 to 85，封装：PDIP (P)-8，包装数量MPQ：50个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：NIPDAU，TI官网SN65LBC176P的批量USD价格：1.802（1000+）

SN65LBC176QD，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：75个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN65LBC176QD的批量USD价格：1.431（1000+）

SN65LBC176QDG4，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：75个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN65LBC176QDG4的批量USD价格：1.582（1000+）

SN65LBC176QDR，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN65LBC176QDR的批量USD价格：1.231（1000+）

SN65LBC176QDRG4，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN65LBC176QDRG4的批量USD价格：1.381（1000+）

RS485-HF-DPLX-EVM — RS-485 半双工评估模块

RS485 半双工 EVM 可帮助设计人员评估器件性能，支持快速开发和分析采用 SN65HVD1X、SN65HVD2X、SN65HVD7X、SN65HVD8X 或 SN65HVD96 收发器的数据传输系统。此 EVM 板没有焊接到板上的 RS-485 器件。用户可以申请样片或购买任意一种 TI RS-485 半双工器件进行评估。请参见 EVM 用户指南（TI 文献编号 SLLU173）获取完整的兼容器件列表。

SN65LBC176AD IBIS Model

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