The SN65HVD179 is a differential line driver and differential-input line receiver that operates with a 5-V power supply. Each driver and receiver has separate input and output pins for full-duplex bus communication designs. They are designed for balanced transmission lines and interoperation with ANSI TIA/EIA-485A, TIA/EIA-422-B, ITU-T v.11, and ISO 8482:1993 standard-compliant devices.

The differential bus driver and receiver are monolithic, integrated circuits designed for full-duplex bi-directional data communication on multipoint bus-transmission lines at signaling rates⁽¹⁾ up to 25 Mbps. The SN65HVD179 is fully enabled with no external enabling pins.

The 1/2 unit load receiver has a high receiver input resistance. This results in lower bus leakage currents over the common-mode voltage range, and reduces the total amount of current that a 485 driver is forced to source or sink when transmitting.

The balanced differential receiver input threshold makes the SN65HVD179 fully compatible with fieldbus requirements that define an external failsafe structure.

⁽¹⁾The signaling rate of a line is the number of voltage transitions that are made per second expressed in the units bps (bits per second).

• Designed for INTERBUS Applications
• Balanced Receiver Thresholds
• 1/2 Unit-Load (up to 64 nodes on the bus)
• Bus-Pin ESD Protection 15 kV HBM
• Bus-Fault Protection of -7V to 12V
• Thermal Shutdown Protection
• Power-Up/Down Glitch-free Bus Inputs and Outputs
• Designed for RS-422 and RS-485 Networks
• APPLICATIONS
  • Digital Motor Control
  • Utility Meters
  • Chassis-to-Chassis Interconnections
  • Electronic Security Stations
  • Industrial, Process, and Building Automation
  • Point-of-Sale (POS) Terminals and Networks
  • DTE/DCE Interfaces

• Number of receivers
• 1
• Number of transmitters
• 1
• Duplex
• Full
• Supply voltage (Nom) (V)
• 5
• Signaling rate (Max) (Mbps)
• 25
• IEC 61000-4-2 contact (+/- kV)
• —
• Fault protection (V)
• -9 to 14
• Common mode range
• -7 to 12
• Number of nodes
• 64
• Isolated
• No
• ICC (Max) (mA)
• 2.7
• Rating
• Catalog
• Operating temperature range (C)
• -40 to 85

SN65HVD179的完整型号有：SN65HVD179D、SN65HVD179DR，以下是这些产品的关键参数及官网采购报价：

SN65HVD179D，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SN65HVD179D的批量USD价格：2.429（1000+）

SN65HVD179DR，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SN65HVD179DR的批量USD价格：2.024（1000+）

SN65HVD179 IBIS Model

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