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Bus-polarity correcting RS-485 transceiver with IEC-ESD protection

Availability: 5,840


Package | PIN: SOIC (D) | 8
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $1.45
10-24 $1.29
25-99 $1.20
100-249 $1.02
250-499 $0.94
500-749 $0.77
750-999 $0.62
1,000+ $0.55


  • Meets or exceeds the requirements of the TIA/EIA-485A standard and the State Grid Corporation of China (SGCC) Part 11 Serial Communication Protocol RS-485 standard
  • 4.5-V to 5.5-V supply voltage
  • Half-duplex RS-422 / RS-485
  • Bus polarity correction within 45 ms
  • Works with or without fail-safe biasing resistors
  • Data rate: up to 1 Mbps
  • Bus I/O protection:
    • ±16-kV HBM ESD
    • ±8-kV IEC 61000-4-2 contactdischarge
    • ±8-kV IEC 61000-4-2 air-gap discharge
    • ±2-kV IEC61000-4-4 fast transient burst
  • Open, short, and idle bus fail-safe
  • Large receiver hysteresis
    for noise rejection: 120 mV
  • Up to 256 nodes on a bus (1/8 unit load)
  • Extended ambient temperature
    range: -40°C to 125°C
  • Low power consumption
    • Standby supply current: < 1 µA
    • Operational supplycurrent: < 1.1 mA
  • Glitch-free power-up / down for hot plug-in capability

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Texas Instruments  THVD1505DR

The THVD1505 is a low-power RS-485 transceiver with automatic bus-polarity correction andtransient protection. Upon hot plug-in, the device detects and corrects the bus polarity within thefirst 45 ms of bus idling. The bus pins are robust to electrostatic discharge (ESD) events, withhigh levels of protection to human-body model (HBM), IEC 61000-4-2 contact discharge and air-gapdischarge specifications.

The device combines a differential driver and a differential receiver, which operatetogether from a single 5-V power supply. The driver differential outputs and the receiverdifferential inputs are connected internally to form a bus port suitable for half-duplex (two-wirebus) communication. The device features a wide common-mode voltage range making the device suitablefor multi-point applications over long cable runs. The THVD1505 is available in an SOIC-8 package,and is characterized for free-air temperatures from –40°C to 125°C.