L9663-TR-1 - Automotive PSI5 Transceiver | STMicroelectronics
Référence : L9663-TR-1 ✓ ActifL9663-TR-1 Présentation
A PSI5 transceiver is an automotive interface IC that connects a microcontroller to sensors using the PSI5 physical layer. In the broader semiconductor hierarchy, it belongs to the transceiver and interface-controller class, then to the interface IC category, and ultimately to the wider automotive analog and mixed-signal semiconductor market. Its primary function is to support communication between a vehicle's electronic control unit and peripheral sensors.
The L9663-TR-1 includes an integrated frequency-locked loop, or FLL, that can track an external clock reference and provide a clock with ±1% accuracy. This feature is significant because PSI5 sensor timing and synchronous data transfer depend on a stable reference. The device also supports SPI communication for configuration and control by the host microcontroller. Its 4.8 V to 35 V operating supply range accommodates low-voltage sensor networks and higher-voltage automotive electrical environments.
The manufacturer datasheet identifies two supported PSI5 communication architectures. Mode 1 and Mode 2 differ in how the transceiver communicates with the microcontroller, and the correct IC configuration must be selected for the implemented architecture. This makes software initialization and application-circuit design central to successful deployment. The integrated FLL and external clock-reference path provide synchronization benefits when the vehicle network requires an accurate common timing source.
Typical applications include automotive radar and camera sensor interfaces, vehicle body and chassis electronics, engine or powertrain control modules, and other electronic control units that connect sensors through PSI5. In such systems, the L9663-TR-1 acts as the physical-layer interface between the MCU and remote sensors while handling clock tracking, serial configuration, and sensor-network communication.
Designers should verify the exact operating mode, reference-clock configuration, external components, and electrical limits against the manufacturer datasheet before layout release. The 32-pin TQFP requires careful power and ground distribution, while automotive applications require attention to transient immunity, EMC behavior, and the system-level qualifications of the complete electronic control unit rather than the IC in isolation.
This page consolidates verified manufacturer and distributor information, distinguishes confirmed L9663 family ordering variants, maps the device to automotive PSI5 applications, and clearly identifies specifications that still require confirmation from the official datasheet. That separation between verified data and unresolved engineering details helps designers make sourcing decisions without treating distributor metadata as a substitute for the datasheet.
Alternatives de remplacement direct pour L9663-TR-1 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec L9663-TR-1 (même facteur de forme et même empreinte) — différant par Package Type, Supply Voltage Range.
L9663-TR
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Voir la fiche technique →L9663-1
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
L9663-TR-1 Spécifications
| Product Type | Automotive PSI5 transceiver IC |
| PSI5 Version | PSI5 |
| Supported Communication Modes | Mode 1 and Mode 2 |
| Microcontroller Interface | SPI |
| Supply Voltage Range | 4.8 V to 35 V |
| Integrated Clock Module | Frequency-locked loop (FLL) |
| External Clock Reference | Supported |
| Clock Reference Accuracy | ±1% |
| Package Type | 32-pin TQFP |
| Package Dimensions | 7 mm x 7 mm |
| Type de montage | Surface mount |
| Automotive Application | Automotive sensor interface |
| Manufacturer | STMicroelectronics |
| Ordering Code | L9663-TR-1 |
| Reflow Temperature | 260 °C |
| Moisture Sensitivity Level | MSL 3 |
| JESD Code | e3 |
| Terminal Finish | Matte tin |
Guide de configuration des broches du L9663-TR-1 7 mm x 7 mm
Configuration des broches du L9663-TR-1 (boîtier 7 mm x 7 mm). La numérotation des broches, les fonctions et les schémas de connexion sont définis dans la fiche technique du fabricant. Consultez-la pour l'empreinte exacte et les directives de soudage.
Aucune donnée de brochage détaillée disponible pour L9663-TR-1.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
L9663-TR-1 convient pour 6 applications: Automotive Radar Sensor Interface, Vehicle Body Control Module, Powertrain Sensor Network, Camera Sensor Communication, Industrial Vehicle Sensor Gateway, Environmental and Proximity Sensor Network.
Automotive Radar Sensor Interface
The L9663-TR-1 fits automotive radar sensor networks that use PSI5 as the physical interface between a vehicle ECU and a remote sensor. Its 4.8 V to 35 V supply range accommodates automotive power-system variation, while SPI allows the host microcontroller to configure the transceiver. The integrated FLL tracks an external clock reference and provides a ±1% clock reference, supporting synchronized sensor timing. Designers should still verify transceiver mode, reference-clock topology, fault behavior, and the ECU-level EMC and transient-immunity design against the official datasheet.
Recommandé
Vehicle Body Control Module
L9663-TR-1 is suitable for body and chassis electronic control units that connect distributed sensors over PSI5. The SPI control path allows a host MCU to initialize Mode 1 or Mode 2 operation, while the integrated FLL supports a common clock when the module receives an external reference. Its 4.8 V to 35 V operating supply range provides useful margin across a 12 V vehicle architecture. Integration must account for the 32-pin TQFP footprint, stable reference-clock routing, power decoupling, and protection required by the vehicle's transient environment.
Recommandé
Powertrain Sensor Network
The L9663-TR-1 can serve as the PSI5 interface in an engine or powertrain control module requiring communication with remote pressure, position, or temperature sensors. Mode 1 and Mode 2 support lets the ECU architecture select the appropriate communication arrangement, and the integrated FLL provides a reference clock with ±1% accuracy when tracking an external source. The 4.8 V to 35 V supply range supports automotive rail conditions, but layout must minimize clock-loop noise and provide robust return paths. Final qualification depends on the complete ECU and its operating environment.
Recommandé
Camera Sensor Communication
L9663-TR-1 can support automotive camera or image-sensor subsystems that use PSI5 for sensor connectivity and synchronization. The external clock-reference path and integrated FLL provide a stable timing basis, which is important when sensor data must be aligned with other vehicle signals. SPI configuration supports controlled initialization by the host MCU, and the 32-pin TQFP is compatible with compact ECU layouts. Engineers must confirm that the selected PSI5 mode matches the sensor and cable architecture, then evaluate latency, clock accuracy, isolation requirements, and EMC performance.
Recommandé
Industrial Vehicle Sensor Gateway
L9663-TR-1 is applicable to industrial vehicle, rail, or off-highway sensor gateways that retain an automotive-style PSI5 sensor architecture. Its 4.8 V to 35 V supply range offers a broad input interval for regulated vehicle power, while Mode 1 and Mode 2 support provides architecture flexibility. The integrated FLL can derive a ±1% clock reference from an external source for synchronous sensor traffic. The system designer must verify whether PSI5 cable lengths, fault tolerance, environmental exposure, and qualification expectations fall within the device's supported operating limits.
Recommandé
Environmental and Proximity Sensor Network
The L9663-TR-1 can connect a vehicle ECU to PSI5-based environmental, proximity, or occupancy sensors distributed around the vehicle. SPI permits host-controlled setup of the communication mode, and the integrated FLL supports coherent timing when multiple sensor outputs must be compared. The wide 4.8 V to 35 V supply range supports robust sensor-network operation, subject to each sensor's own requirements. Designers should allocate appropriate protection and grounding for cable-connected sensors, verify wake-up and diagnostic behavior, and validate clock jitter and bus loading against the application schematic.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour L9663-TR-1 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | L9663-TR | L9663-1 |
|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 32-TQFP (7x7) | 32-TQFP (7x7) | 32-TQFP (7x7) |
Principaux différenciateurs
- Integrated clock-reference tracking (vs L9663-TR)
- Explicit support for two PSI5 architectures (vs L9663-1)
- Wide automotive supply range (vs L9663-1)
Notes de conception
Route the external clock-reference connection as a short, controlled-impedance trace directly to the relevant transceiver pin, with a continuous ground reference beneath it. The integrated FLL tracks this source to provide a ±1% reference, so unnecessary stubs, long loops, and switching-current paths near the clock network can degrade signal integrity. Confirm the recommended source impedance, coupling, grounding, and termination topology in the manufacturer application circuit before release.
Decouple the 4.8 V to 35 V supply network with the capacitance and ESR requirements stated in the official datasheet and place the components close to the associated pins. Separate sensitive reference paths from high-current and switching return paths to reduce supply-coupled noise on the clock and PSI5 interfaces. The exact capacitor voltage rating, ESR, layout, and allowable ripple are not available in the supplied excerpts and must not be guessed.
Do not assume that every L9663 ordering suffix is electrically interchangeable. The verified material confirms L9663-TR and L9663-1 as family candidates but does not define grade, qualification, temperature, or packing differences. Before substitution, compare the manufacturer ordering table, pin names, electrical limits, automotive qualification, package drawing, and software configuration. A distributor comparison-page listing is not sufficient evidence for production interchangeability.
Treat the 32-pin TQFP layout as part of the vehicle's EMC control strategy rather than completing the design as a standalone low-voltage circuit. Provide a low-impedance ground structure, minimize loop area around interface traces, and observe the datasheet's input filtering and external-network recommendations. Automotive ECU qualification applies to the complete circuit, including cables, protection devices, filtering, grounding, and software diagnostics.
Informations de conformité
The supplied results identify the L9663 as an automotive PSI5 transceiver but do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. JESD-609 code e3, matte-tin termination, MSL 3, and a 260 °C peak reflow temperature were reported by Partstack and are not treated as substitutes for the missing compliance declarations.
