Automotive Hi-Speed USB 2.0 Protectors

Industry-Leading Overvoltage and ESD Protection for Automotive USB

Please check latest availability status for a specific part variant.


The MAX20042F, MAX20043F, and MAX20044F devices provide high ESD and short-circuit protection for the low-voltage internal USB data and USB power line in automotive radio, navigation, connectivity, and USB hub applications. The devices support USB Hi-Speed (480Mbps), USB full-speed (12Mbps), and USB low-speed (1.5Mbps) operation, as well as USB on-the-go (OTG) functionality.

The short-circuit protection features include short-to-battery on the protected HVBUS, HVD+, and HVD- outputs, as well as short-to-HVBUS on the protected HVD+ and HVD- outputs. The devices are capable of a short-to-battery condition of up to +18V. Short-to-GND protection and overcurrent protection are also provided on the protected HVBUS output to protect the internal BUS power rail from an overcurrent fault.

The devices feature high ESD protection to ±15kV Air Gap and ±8kV Contact on the protected HVBUS, HVD+, and HVD- outputs.

The devices feature a low on-resistance (RON), 90mΩ (max) USB power switch, and two low on-resistance (RON), 4Ω (typ) USB 2.0 data switches. These devices also feature an enable input, a fault output, a 10ms fault-recovery time, a 1ms overcurrent blanking time, and an integrated overcurrent autoretry.

The MAX20042F, MAX20043F, and MAX20044F are available in a lead-free, 16-pin QSOP package and operate over the -40°C to +105°C temperature range.
MAX20042F, MAX20043F, MAX20044F: Typical Operating Circuit MAX20042F, MAX20043F, MAX20044F: Typical Operating Circuit Enlarge+

Key Features

  • Accurate Bus Current Limiting with Minimal Voltage Drop
    • Low RON 90mΩ (max) USB Power Switch
    • 0.65A (typ), MAX20042F
    • 1.0A (typ), MAX20043F
    • 1.3A (typ), MAX20044F
  • Targeted Features for Optimized USB Performance
    • Two RON 4Ω (typ) USB 2.0 Data Switches
    • 480Mbps or 12Mbps USB 2.0 Operation
    • 10ms Fault-Recovery Time
    • 1ms Overcurrent Blanking Time
    • 5.67V (typ) Fixed HVBUS Protection Trip Threshold
  • Robust for the Automotive Environment
    • Short-to-Battery and Short-to-GND Protection on Protected HVBUS Output
    • Short-to-Battery and Short-to-BUS Protection on Protected HVD+ and HVD- Outputs
    • Tested to ISO 10605 and IEC 61000-4-2 ESD Standards
    • 16-Pin (3.90mm × 4.94mm) QSOP Package
    • -40°C to +105°C Operating Temperature Range
    • AEC-Q100 Qualified


  • Automotive USB Protection

See parametric specs for Current Limit and USB Power Switches (80)

Part NumberUSBPower SwitchesCurrent Limit
Current Limit
Fault IndicatorCurrent Limit Accuracy
Current Limit Set ByLowest Adj. Setting
Oper. Temp.
MAX20042F Yes1650650Yes12.5Preset0.650.0514.755.5-40 to +105
MAX20043F 10001000
MAX20044F 13001300

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX20044EVKIT: Evaluation Kit for the MAX20042F/MAX20043F/MAX20044F
Request Reliability Report for: MAX20043F 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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