The SN65LBC182 and SN75LBC182 are differential data line transceivers with a high level of ESD protection in the trade-standard footprint of the SN75176. They are designed for balanced transmission lines and meet ANSI standard TIA/EIA-485-A and ISO 8482. The SN65LBC182 and SN75LBC182 combine a 3-state, differential line driver and 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 be externally connected together to function as a direction control.

The driver outputs and the receiver inputs connect internally to form a differential input/output (I/O) bus port that is designed to offer minimum loading to the bus. This port operates over a wide range of common-mode voltage, making the device suitable for party-line applications. The device also includes additional features for party-line data buses in electrically noisy environment applications such as industrial process control or power inverters.

The SN75LBC182 and SN65LBC182 bus pins also exhibit a high input resistance equivalent to one-fourth unit load allowing connection of up to 128 similar devices on the bus. The high ESD tolerance protects the device for cabled connections. (For an even higher level of protection, see the SN65/75LBC184, literature number SLLS236.)

The differential driver design incorporates slew-rate-controlled outputs sufficient to transmit data up to 250 kbps. Slew-rate control allows longer unterminated cable runs and longer stub lengths from the main backbone than possible with uncontrolled voltage transitions. The receiver design provides a fail-safe output of a high level when the inputs are left floating (open circuit). Very low device supply current can be achieved by disabling the driver and the receiver.

The SN65LBC182 is characterized for operation from –40°C to 85°C, and the SN75LBC182 is characterized for operation from 0°C to 70°C.

• One-Fourth Unit Load Allows up to 128 Devices on a Bus
• ESD Protection for Bus Terminals: – ±15-kV Human Body Model – ±8-kV IEC61000-4-2, Contact Discharge – ±15-kV IEC61000-4-2, Air-Gap Discharge
• Meets or Exceeds the Requirements of ANSI Standard TIA/EIA-485-A and ISO 8482: 1987(E)
• Controlled Driver Output-Voltage Slew Rates Allow Longer Cable Stub Lengths
• Designed for Signaling Rates? Up to 250-kbps
• Low Disabled Supply Current . . . 250 μA Max
• Thermal Shutdown Protection
• Open-Circuit Fail-Safe Receiver Design
• Receiver Input Hysteresis . . . 70 mV Typ
• Glitch-Free Power-Up and Power-Down Protection
• APPLICATIONS
  • Utility Meters
  • Industrial Process Control
  • Building Automation

• Number of receivers
• 1
• Number of transmitters
• 1
• Duplex
• Half
• Supply voltage (Nom) (V)
• 5
• Signaling rate (Max) (Mbps)
• 0.25
• IEC 61000-4-2 contact (+/- kV)
• 8
• Fault protection (V)
• -10 to 15
• Common mode range
• -7 to 12
• Number of nodes
• 128
• Features
• IEC ESD protection
• Isolated
• No
• ICC (Max) (mA)
• 30
• Rating
• Catalog
• Operating temperature range (C)
• -40 to 85

SN65LBC182的完整型号有：SN65LBC182D、SN65LBC182DR、SN65LBC182P，以下是这些产品的关键参数及官网采购报价：

SN65LBC182D，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SN65LBC182D的批量USD价格：1.329（1000+）

SN65LBC182DR，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SN65LBC182DR的批量USD价格：1.116（1000+）

SN65LBC182P，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SN65LBC182P的批量USD价格：1.807（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。

SN65LBC182 IBIS Model

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TINA-TI 提供了 SPICE 所有的传统直流、瞬态和频域分析以及更多。TINA 具有广泛的后处理功能，允许您按照希望的方式设置结果的格式。虚拟仪器允许您选择输入波形、探针电路节点电压和波形。TINA 的原理图捕获非常直观 - 真正的“快速入门”。

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