PSI5 transceiver

The Peripheral Sensor Interface (PSI5) is an interface for automotive sensor applications. PSI5 is an open standard based on existing sensor interfaces for peripheral sensors and offers a universal and flexible solution for multiple sensor applications.

The PSI5 interface allows asynchronous or synchronous operations and different bus modes. The device is compatible with both v1.3 and v2.x PSI5 revisions (limitations are specified inside this document). It operates with a wide range of sensor supply current and variable data word length (8 to 28 bit).

The sensors are connected to the ECU using the same line for power supply and data transmission. The transceiver IC provides a pre-regulated voltage to the sensors and reads in the transmitted sensor data.

The PSI5 interface allows either point to point connection or bussed mode.

Key Features

  • AEC-Q100 qualified
  • 2-channel PSI5 transceiver compatible with rev. 1.3 and rev. 2.x
  • Manchester coded digital data transmission
  • High data transmission speed of 125 kbps (optional 83.3 kbps and 189 kbps)
  • High EMC robustness and low emission
  • Bootstrap circuits for sync pulses
  • Current limitation and voltage clamp on interface pins
  • Integrated charge pump stage for pre-regulation with spread spectrum approach
  • Integrated FLL module for high accuracy timing control
  • Reverse voltage protection structure
  • Short to ground tolerant with ±1.5 V ground shift
  • 32-bit SPI interface with address multiplexing
  • Operating voltage: VB = 4.8 V (5.2 V for sync pulses with 3.5 V step) to 35 V
  • Ambient temperature range: -40°C to 140 °C
  • Package: VFQFPN28 or TQFP32EP


Technical Documentation

Product Specifications
Description Version Size
DS11401 DS11401: Automotive PSI5 Transceiver IC 3.0 1 MB
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Sample & Buy

Part Number Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
L9663-TR TQFP 32 7x7x1.0 Tape And Reel -40 140 Active - - NEC EAR99 - MORE INFO
L9663 TQFP 32 7x7x1.0 Tray -40 140 Active - - NEC EAR99 - MORE INFO
L9663-TR-1 QFN 5X5 0.5 PITCH DIMPLE ATK1 Tape And Reel -40 140 Active - - NEC EAR99 - MORE INFO
L9663-1 QFN 5X5 0.5 PITCH DIMPLE ATK1 Tray -40 140 Active - - NEC EAR99 - MORE INFO

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L9663-TR ActiveTQFP 32 7x7x1.0AutomotiveEcopack2 0 0
L9663 ActiveTQFP 32 7x7x1.0AutomotiveEcopack2 0 0
L9663-TR-1 ActiveQFN 5X5 0.5 PITCH DIMPLE ATK1AutomotiveEcopack2 0 0
L9663-1 ActiveQFN 5X5 0.5 PITCH DIMPLE ATK1AutomotiveEcopack2 0 0

(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.