L9864D/XT ABS Diagnostic Interface IC | STMicroelectronics
N.º de pieza: L9864D/XT ✓ ActivoL9864D/XT Descripción general
An ABS diagnostic interface IC is a semiconductor interface device used to connect automotive or equipment-level diagnostic functions to a larger electronic control architecture. In the broader hierarchy, this component belongs to the wireless-interface IC category and ultimately to the integrated-circuit and semiconductor ecosystems. The L9864D/XT is intended for applications where an ABS-related diagnostic signal must be conditioned, monitored, or conveyed within a vehicle communication system. Its exact internal architecture and supported vehicle-network protocol are not stated in the supplied sources.
The verified distributor listings describe the L9864D/XT as an ABS diagnostic interface and classify it under RF wireless miscellaneous interfaces. The part is associated with tube packaging according to the DigChip datasheet listing, and the XAIPART site-MPN list includes related STMicroelectronics interface products such as L9678P, L9679PTR, and L6362A. However, the supplied cross-reference results do not establish that any of those related devices are electrically or pin-for-pin interchangeable with the L9864D/XT.
The L9864D/XT should therefore be selected based on confirmed manufacturer documentation, exact package drawing, pinout, electrical characteristics, and vehicle or equipment compatibility. Designers should not infer interchangeability from the shared ABS or interface designation alone. The verified distributor pages identify the part as a wireless interface, while the Heisener listing describes it as an ABS telecom interface; these descriptions support the functional classification but do not establish performance ratings.
Typical implementation involves connecting the device to a diagnostic bus and a host or controller, then validating the signal behavior across power, reset, communication, and fault conditions. Because the supplied data does not include supply voltage, interface timing, ESD rating, operating temperature, or automotive qualification information, those values require confirmation from the manufacturer datasheet before schematic release or production procurement.
A critical sourcing check is to compare the exact order code, package marking, tube quantity, and pin arrangement. The slash in L9864D/XT identifies the distributor-visible orderable variant, while the suffix and package arrangement must be confirmed against the STMicroelectronics product documentation. This page combines verified distributor information, commercial availability references, technical-data gaps, and drop-in-replacement cautions so engineers can make an informed sourcing decision without confusing related interface ICs with guaranteed replacements.
Alternativas directas para L9864D/XT — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con L9864D/XT (mismo factor de forma y huella) — difiere en Package, Product Type, Supply Voltage.
L9678P
✅ Sustitución directa ⚠️ Especificaciones sin verificarConsulte el precio
Ver hoja de datos →L9679PTR
✅ Sustitución directa ⚠️ Especificaciones sin verificarConsulte el precio
Ver hoja de datos →L6362A
✅ Sustitución directa ⚠️ Especificaciones sin verificarConsulte el precio
Ver hoja de datos →L9864D/XT Especificaciones
| Manufacturer | STMicroelectronics |
| Part Number | L9864D/XT |
| Product Type | ABS diagnostic interface IC |
| Application Category | Wireless interface |
| Interface Classification | ABS diagnostic interface |
| Packaging | Tube |
| Lead-Free Status | Lead Free |
| Automotive Interface | ABS diagnostic interface |
Guía de configuración de pines de L9864D/XT standard
Configuración de pines para L9864D/XT (encapsulado standard). La numeración de pines, las funciones y los diagramas de conexión se definen en la hoja de datos del fabricante. Consúltela para conocer el footprint exacto y las directrices de soldadura.
No hay datos detallados de patillaje disponibles para L9864D/XT.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
L9864D/XT es adecuado para 6 aplicacións: ABS Diagnostic Signal Interface, Vehicle Electronic Control Unit, ABS Sensor Test and Diagnostics, Industrial Diagnostic Module, Wireless Communication Interface, Diagnostic Service Equipment.
ABS Diagnostic Signal Interface
The L9864D/XT is specifically identified as an ABS diagnostic interface IC, making it the relevant STMicroelectronics choice when an electronic control unit must monitor or communicate an ABS-related diagnostic function. In this role, the device sits between an ABS signal path and a higher-level diagnostic or controller network. The verified distributor records establish the function but do not define the supported bus protocol, electrical thresholds, pinout, or fault behavior. Engineers should therefore design around the manufacturer interface specification and validate signal timing under nominal, degraded-sensor, open-circuit, short-circuit, and power-reset conditions before production release.
Recomendado
Vehicle Electronic Control Unit
An ABS diagnostic interface can support supervisory functions inside a vehicle electronic control unit by receiving diagnostic information and presenting it to the appropriate controller. The L9864D/XT's confirmed ABS diagnostic classification makes it applicable to this architectural position, although the supplied data does not identify its host bus or automotive qualification. Design engineers should verify supply tolerance, logic levels, reset behavior, ESD performance, operating temperature, and fault detection directly from the manufacturer documentation. Software and hardware validation should also include compatibility with the vehicle's diagnostic strategy.
Recomendado
ABS Sensor Test and Diagnostics
The L9864D/XT can be evaluated for ABS sensor test and diagnostic equipment where the system must identify the presence, state, or integrity of an ABS-related signal. The verified product classification supports this application concept, but no supplied specification states the input range, test thresholds, response time, or output signaling. A bench design should therefore compare the part's documented electrical characteristics with the sensor and test-harness requirements. Include checks for wiring faults, intermittent sensors, supply transients, and diagnostic false positives rather than relying solely on nominal functional testing.
Recomendado
Industrial Diagnostic Module
The L9864D/XT may be considered for an industrial diagnostic module that monitors a braking or safety-related subsystem, provided the manufacturer confirms that its electrical and qualification characteristics suit the target environment. The ABS classification is relevant to condition monitoring, while the verified listings do not provide industrial temperature, ESD, transient, or communication specifications. Before using it outside automotive designs, confirm its supported diagnostic protocol and environmental ratings. A hardware-in-the-loop test should exercise sensor degradation, module reset, bus interruption, and power-loss recovery scenarios.
Recomendado
Wireless Communication Interface
DigiKey classifies the L9864D/XT as a wireless interface, allowing it to be considered within communication modules that require an ABS diagnostic connection alongside other interface functions. This classification does not mean the device is a radio transceiver; no RF frequency, modulation, transmit-power, or antenna specification is provided. Engineers should treat it as a specialized interface IC and verify its actual connection to the vehicle communication network. Board-level planning must wait for confirmation of the package, pinout, supply rails, grounding, and required passive components from the manufacturer datasheet.
Recomendado
Diagnostic Service Equipment
The L9864D/XT can be evaluated for diagnostic service equipment intended to access or emulate an ABS-related diagnostic function. Its confirmed specialized interface classification is the principal reason for considering the part, but the supplied information does not identify a standardized tester interface or diagnostic message set. Service-equipment designers should confirm that the device's protocol, timing, and electrical levels match the vehicle interface before relying on it. Validation should cover tool connection, session handling, error responses, cable faults, and interoperability with the target diagnostic procedures.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para L9864D/XT — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | L9678P | L9679PTR | L6362A |
|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
Diferenciadores clave
- Verified ABS diagnostic-interface positioning (frente a L9678P)
- Order-code and tube-packaging identification (frente a L9679PTR)
- Directly documented ABS diagnostic classification (frente a L6362A)
Notas de diseño
Do not treat a shared STMicroelectronics interface family as proof of replacement compatibility. The supplied evidence confirms only the L9864D/XT's ABS diagnostic-interface classification and identifies L9678P, L9679PTR, and L6362A as related site-listed interface products. Before substituting any candidate, compare the exact package drawing, every pin name, supply voltage, logic thresholds, timing, protocol behavior, reset requirements, and exposed-pad connection. A successful distributor stock check is not evidence of electrical interchangeability.
The verified data does not provide a manufacturer package drawing or pinout, so the PCB footprint must not be inferred from the L9864D/XT family name alone. Obtain the package outline, pin-1 orientation, lead pitch, body dimensions, and any exposed-pad or thermal-via recommendation from STMicroelectronics. Verify courtyard clearance, solder-mask geometry, paste apertures, and assembly orientation against the exact orderable variant. A footprint mismatch can produce electrical shorts or prevent reliable soldering even when the component appears physically similar.
Supply-voltage limits, quiescent current, and I/O current ratings are not present in the supplied sources. Before connecting the L9864D/XT to a diagnostic module, confirm the device's operating and absolute-maximum voltage ranges, power-up sequence, and I/O behavior during reset. Check that every connected microcontroller or transceiver remains within the interface's logic limits when the IC is unpowered. The selected decoupling and any series termination should follow the manufacturer reference design rather than generic values.
Validate the ABS diagnostic path under realistic faults, including sensor open circuits, intermittent connections, shorts to supply or ground, bus interruption, reset, brownout, and power loss. The supplied distributor snippets do not document fault-detection thresholds, timeout behavior, or fail-safe outputs, so these behaviors must be obtained from the manufacturer documentation and verified in the target diagnostic software. Record whether each fault is reported immediately, after a timeout, or through a latched status condition.
Información de cumplimiento
The DigChip result explicitly states Lead Free status. RoHS, REACH, halogen-free, conflict-minerals, and AEC-Q100 information are not supplied and remain unknown. No compliance claim should be inferred from the lead-free statement.
