TJA1101B, IEEE 100BASE-T1 Compliant Automotive Ethernet PHY Transceiver

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TJA1101B Block Diagram


Automotive Qualified

  • AEC-Q100 Grade 1
  • Ambient Temperature -40°C to 125°C

IEEE 100BASE-T1 Compliant PHY Transceiver

  • Interoperable with any IEEE 100BASE-T1 and OABR compliant PHY
  • 100Mbps Ethernet over single unshielded twisted pair (UTP) cable
  • ESD robust MDI:
    • Passes IEC62228-5 Class IV
    • Protected against +/- 8kV according to IEC61000-4-2

OPEN Alliance TC-10 Compliant Sleep / Wake Up

  • Sleep and wake-up forwarding over data line
  • For reduced cable cost and weight
  • With direct connection to Vbat for simplified power management


  • Safety manual available to support system level safety goals

Optimized for Automotive Use Cases

  • MDI pins do not need an external filter or ESD protection
  • Cable polarity detection and auto-correction
  • Supports single 3.3V supply
  • Direct connection to Vbat

Advanced Diagnostic Features

  • Real-time Signal Quality Indicator
  • Gap Free Under Voltage Detection
  • Diagnosis of Cabling Errors

HVQFN36 (6mm x 6mm) with Wettable Flanks

  • Small PCB footprint enabled for AOI

Product Longevity Program

  • This product is included in the NXP Product Longevity Program ensuring a stable supply of products for your embedded designs. The TJA1101 is included in the 15-year program.

Part numbers include: TJA1101BHN.


Quick reference to our documentation types.

4 documents

Design Files


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1 software file

  • BSPs and Device Drivers

    TJA110x Linux driver for IEEE 802.3 Clause 22 managed PHYs

Note: For better experience, software downloads are recommended on desktop.

Engineering Services

4 engineering services

To find a complete list of our partners that support this product, please see our Partner Marketplace.


3 trainings


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