The E521.40 was developed to manage the connection and communication between a microcontroller unit and up to 24 sensor satellites.
Data transmission from the sensor to ECU is done by current modulation on the power supply... read more


  • Provides two respective, four master channels compliant with PSI5 standard v1.3 and v2.1
  • Support 125 Kbit/s, 189 Kbit/s, synchronous and asynchronous modes
  • ƒ Internal sync-voltage generationw
  • Programmable bus-voltage 4.6V to 11V
  • Automatic threshold adaption to sensor quiescent current
  • Reverse polarity protected bus outputs up to 40V


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File Description Type
Info Sheet PDF 221 kB

On Request

File Description
E521.40 | Errata Sheet
E521.40 | Errata Sheets

Application Diagram


  • Safety (airbag) control systems
  • Powertrain control systems
  • Vehicle dynamics control system

Ordering Information

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Part No. Package Order No.
E521.40 QFN20L5 E52140A62C
E521.40 SOIC20 E52140A55E
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