L9663-TR-1

Specialized Overview

The L9663-TR-1 is an automotive-grade Peripheral Sensor Interface (PSI5) transceiver manufactured by STMicroelectronics. It supports two independent PSI5 channels compliant with versions 1.3 and 2.1, enabling robust communication between electronic control units and sensors. The device integrates a charge pump for on-chip line supply generation and features a 32-bit SPI interface with address multiplexing for configuration. It operates within a supply voltage range of 4.8 V to 35 V and withstands ambient temperatures from -40°C to 140°C. Packaged in a 28-VFQFPN with exposed pad, it ensures high EMC robustness and precise timing via an integrated FLL module.

Specialized Feature Summary

• Dual-channel PSI5 transceiver supporting asynchronous or synchronous operations and variable data word lengths
• Integrated pre-regulation stage and charge pump for direct sensor power supply generation on the transmission line
• High accuracy timing control utilizing an integrated Frequency Locked Loop (FLL) module and external clock input
• Robust protection features including reverse voltage protection and tolerance to short-to-ground conditions with ±1.5 V ground shift

Specialized Applications

• Automotive Electronic Control Unit (ECU) connections to peripheral sensors
• Point-to-point or bus mode sensor networks requiring combined power and data transmission
• Systems demanding high EMC robustness and low electromagnetic emission

Specialized Procurement Notes

Verify the specific suffix against official documentation to confirm package type and reel specifications. Ensure the component meets AEC-Q100 qualification requirements for the intended automotive application environment. Cross-reference the part number with the manufacturer's current production status to confirm availability and lead times prior to ordering.

Specialized Selection Notes

Select this component when designing automotive sensor interfaces requiring compliance with PSI5 v1.3 and v2.1 standards. It is suitable for applications needing integrated power regulation for sensors and high noise immunity. Consider the 28-VFQFPN package constraints and thermal dissipation requirements associated with the exposed pad design during PCB layout.

Specialized Part Context

The L9663 series belongs to STMicroelectronics' portfolio of specialized automotive interface solutions. This specific model variant utilizes the VFQFPN package format, distinguishing it from the TQFP32EP version. It serves as a critical bridge in vehicle networks, facilitating reliable data exchange between microcontrollers and various peripheral sensing devices under harsh operating conditions.

Specialized Replacement Considerations

The L9663-TR is a compatible alternative offering identical functionality but housed in a 32-TQFP package. Verify pin compatibility and board space requirements before substituting, as the physical footprint differs significantly between the 28-pin VFQFPN and 32-pin TQFP configurations.