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SN65HVD77

ACTIVE

3.3V, Full-Duplex RS-485, 12kV IEC ESD, 50Mbps data rate, No Enables

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Data sheet

SN65HVD77

ACTIVE
Data sheet Order now

Product details

Number of receivers 1 Number of transmitters 1 Duplex Full Supply voltage (nom) (V) 3.3 Signaling rate (max) (Mbps) 50 IEC 61000-4-2 contact (±V) 12000 Fault protection (V) -13 to 16.5 Common-mode range (V) -7 to 12 Number of nodes 96 Features IEC ESD protection Isolated No Supply current (max) (µA) 1100 Rating Catalog Operating temperature range (°C) -40 to 125
Number of receivers 1 Number of transmitters 1 Duplex Full Supply voltage (nom) (V) 3.3 Signaling rate (max) (Mbps) 50 IEC 61000-4-2 contact (±V) 12000 Fault protection (V) -13 to 16.5 Common-mode range (V) -7 to 12 Number of nodes 96 Features IEC ESD protection Isolated No Supply current (max) (µA) 1100 Rating Catalog Operating temperature range (°C) -40 to 125
SOIC (D) 8 29.4 mm² 4.9 x 6 VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • 1/8 Unit-load options available
    • Up to 256 Nodes on the bus
  • Bus I/O Protection
    • > ±30-kV HBM protection
    • > ±12-kV IEC61000-4-2 Contact discharge
    • > ±4-kV IEC61000-4-4 Fast transient burst
  • Extended industrial temperature range:
    –40°C to 125°C
  • Large receiver hysteresis (70 mV) for noise rejection
  • Low power consumption
    • < 1.1-mA Quiescent current during operation
    • Low Standby supply current: 10 nA Typical,
      < 5 µA (maximum)
  • Glitch-free power-up and power-down protection for hot-plugging applications
  • 5-V Tolerant logic inputs compatible with 3.3-V or 5-V controllers
  • Signaling rate options optimized for:
    400 kbps (70, 71), 20 Mbps (73, 74), 50 Mbps (76, 77)
  • 1/8 Unit-load options available
    • Up to 256 Nodes on the bus
  • Bus I/O Protection
    • > ±30-kV HBM protection
    • > ±12-kV IEC61000-4-2 Contact discharge
    • > ±4-kV IEC61000-4-4 Fast transient burst
  • Extended industrial temperature range:
    –40°C to 125°C
  • Large receiver hysteresis (70 mV) for noise rejection
  • Low power consumption
    • < 1.1-mA Quiescent current during operation
    • Low Standby supply current: 10 nA Typical,
      < 5 µA (maximum)
  • Glitch-free power-up and power-down protection for hot-plugging applications
  • 5-V Tolerant logic inputs compatible with 3.3-V or 5-V controllers
  • Signaling rate options optimized for:
    400 kbps (70, 71), 20 Mbps (73, 74), 50 Mbps (76, 77)

These devices extend the RS-485 portfolio with a family of full-duplex transceivers with robust 3.3-V drivers and receivers and high levels of ESD protection. The ESD protection includes > ±30-kV HBM and > ±12-kV IEC61000-4-2 contact discharge. The large receiver hysteresis of the SN65HVD7x devices provides immunity to conducted differential noise and the wide operating temperature enables reliability in harsh operating environments. The SN65HVD7x devices are offered in a standard SOIC package as well as in a small-footprint MSOP package.

These devices each combine a differential driver and a differential receiver, which operate from a single 3.3-V power supply. Each driver and receiver has separate input and output pins for full-duplex bus communication designs. These devices all feature a wide common-mode voltage range which makes the devices suitable for multi-point applications over long cable runs.

The SN65HVD71, SN65HVD74, and SN65HVD77 devices are fully enabled with no external enabling pins.

The SN65HVD70, SN65HVD73, and SN65HVD76 devices have active-high driver enables and active-low receiver enables. A low, less than 5-µA standby current can be achieved by disabling both the driver and receiver.

These devices are characterized from –40°C to 125°C.

These devices extend the RS-485 portfolio with a family of full-duplex transceivers with robust 3.3-V drivers and receivers and high levels of ESD protection. The ESD protection includes > ±30-kV HBM and > ±12-kV IEC61000-4-2 contact discharge. The large receiver hysteresis of the SN65HVD7x devices provides immunity to conducted differential noise and the wide operating temperature enables reliability in harsh operating environments. The SN65HVD7x devices are offered in a standard SOIC package as well as in a small-footprint MSOP package.

These devices each combine a differential driver and a differential receiver, which operate from a single 3.3-V power supply. Each driver and receiver has separate input and output pins for full-duplex bus communication designs. These devices all feature a wide common-mode voltage range which makes the devices suitable for multi-point applications over long cable runs.

The SN65HVD71, SN65HVD74, and SN65HVD77 devices are fully enabled with no external enabling pins.

The SN65HVD70, SN65HVD73, and SN65HVD76 devices have active-high driver enables and active-low receiver enables. A low, less than 5-µA standby current can be achieved by disabling both the driver and receiver.

These devices are characterized from –40°C to 125°C.
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Type Title Date
* Data sheet SN65HVD7x 3.3-V Full-Duplex RS-485 Transceivers With ±12-kV IEC ESD datasheet (Rev. G) 24 Sep 2019
EVM User's guide RS-485 Full-Duplex EVM User’s Guide 04 Jun 2014

Design & development

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