TJA1124CHG/0Z - 4-Channel LIN Transceiver | NXP Semiconductors
N.º de pieza: TJA1124CHG/0Z ✓ ActivoTJA1124CHG/0Z Descripción general
A LIN transceiver is a physical-layer interface device within the broader automotive networking hierarchy. LIN, or Local Interconnect Network, is a low-cost, single-wire communications bus commonly used for distributed vehicle functions such as door modules, seat controls, climate controls, lighting, and body electronics. A transceiver sits between the host controller's serial logic and the LIN bus, adding the electrical levels, bus waveform shaping, receiver thresholds, and termination functions needed for reliable communication.
The TJA1124 supports four LIN channels and uses internal pull-up resistors for its commander outputs. Its stated 5 V to 28 V supply range allows operation from conventional automotive battery systems. The manufacturer's datasheet describes optimized output waveforms intended to reduce electromagnetic emission, an important consideration when several transceiver channels operate within a compact electronic control unit near sensitive analog and communication circuitry.
Each channel combines a LIN commander transmitter with a receiver path. According to the manufacturer datasheet, transmit data streams generated by a LIN commander protocol controller are converted into optimized bus signals, while the receivers detect data on the LIN bus and transfer it to the microcontroller through dedicated receive outputs. This integration allows one host controller to manage multiple low-speed vehicle sub-networks while reducing the number of discrete interface components required.
Typical applications include body-control modules, door and seat controllers, climate-control panels, lighting controllers, sensor gateways, and other automotive electronic units that connect several slow peripheral nodes. The four-channel architecture is especially useful where multiple LIN subnets converge on one controller or where a shared communication backbone feeds distributed body functions. The integrated pull-up arrangement also simplifies implementation compared with a design requiring separate command-side termination resistors.
Layout is critical because a LIN bus combines low-speed signaling with fast-edge automotive transients. Place the transceiver and its decoupling capacitor close to their supply pins, route each LIN connection as a short protected network, and keep switching nodes and high-current loads away from receive paths. Confirm the complete pin assignment, recommended external components, protection strategy, and timing limits against the manufacturer datasheet before releasing a production layout.
This page combines the device architecture, verified package and supply information, sourcing guidance, pin-compatible family variants, and application-focused engineering notes. It is intended to help engineers evaluate the TJA1124CHG/0Z for compact four-channel LIN interface designs while highlighting the package, documentation, and verification work required for automotive electronics production.
Alternativas directas para TJA1124CHG/0Z — 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 TJA1124CHG/0Z (mismo factor de forma y huella) — difiere en LIN Commander Termination, Package, Transceiver Configuration.
TJA1124AHG/1Z
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TJA1124AHG/0Z
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Ver hoja de datos →TJA1124CHG/1Z
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TJA1124CHG/0Z Especificaciones
| Device Type | Quad LIN commander transceiver |
| Number of Channels | 4 channels |
| Transceiver Configuration | 4 transmit / 4 receive channels |
| Bus Type | LIN single-wire bus |
| Tensión de alimentación de funcionamiento | 5 V to 28 V |
| LIN Commander Termination | Integrated pull-up resistors |
| Encapsulado | 24-terminal DHVQFN |
| Package Dimensions | 5.5 mm x 3.5 mm |
| Package Height | 0.85 mm |
| Tipo de montaje | Surface mount |
| Operating Features | Active |
| Transmit Waveform | Optimized for reduced electromagnetic emission |
| Receive Outputs | RXD1 through RXD4 |
Guía de configuración de pines de TJA1124CHG/0Z 0.85 mm
Configuración de pines para TJA1124CHG/0Z (encapsulado 0.85 mm). 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 TJA1124CHG/0Z.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
TJA1124CHG/0Z es adecuado para 6 aplicacións: Automotive Body-Control Module, Door and Seat Control Module, Climate-Control Panel Interface, Vehicle Lighting Controller, Automotive Sensor Gateway, Multiplexed Body Electronics Hub.
Automotive Body-Control Module
The TJA1124CHG/0Z fits a body-control module that connects several low-speed vehicle functions through LIN. Its four-channel architecture allows one host controller to manage multiple command and receive paths without four separate physical-layer devices. The 5 V to 28 V operating range suits conventional automotive power environments, while the 24-terminal DHVQFN package measures only 5.5 mm by 3.5 mm. Integrated commander pull-up resistors also reduce discrete component count. The manufacturer identifies optimized bus-signal shaping that minimizes electromagnetic emission, making the device suitable for compact modules where several LIN wires converge near sensitive control electronics.
Recomendado
Door and Seat Control Module
A door or seat controller can use separate LIN channels for distributed switches, actuators, and position feedback. The TJA1124CHG/0Z provides four LIN command outputs and four receiver paths, allowing the host microcontroller to exchange data with several peripheral nodes while retaining a compact board footprint. Its integrated command pull-ups simplify the transmitter network and reduce repetitive component placement. The 24-terminal DHVQFN format is especially useful in modules constrained by door-panel, seat-frame, or harness-envelope dimensions. Designers should verify timing and bus-current requirements in the NXP datasheet and retain adequate separation between LIN routing and nearby sensitive signals.
Recomendado
Climate-Control Panel Interface
The TJA1124CHG/0Z can bridge a climate-control host controller to LIN-connected fan, valve, temperature-sensor, and panel peripherals. Four channels provide a practical way to organize related vehicle sub-networks while the 5 V to 28 V supply range accommodates automotive power-system conditions. Its integrated pull-up resistors reduce the external component burden for command outputs, and the manufacturer describes bus-waveform shaping intended to limit electromagnetic emission. The compact 5.5 mm by 3.5 mm DHVQFN package leaves board area for the controller and power circuitry. Final design work must follow the datasheet's timing, decoupling, protection, and routing recommendations.
Recomendado
Vehicle Lighting Controller
A distributed lighting controller can use the TJA1124CHG/0Z to connect several LIN-attached lamp drivers or switches. Separate command and receive paths support bidirectional device interaction, while four channels consolidate multiple low-speed links into one interface circuit. The integrated commander pull-ups and reduced-emission waveform behavior are valuable in an electronic control unit surrounded by relay drivers, power switches, and harness wiring. Its compact 24-terminal DHVQFN package supports dense layouts without changing the board scale to accommodate four discrete transceivers. Engineers should verify operating temperature, output timing, protection, and fault behavior against the manufacturer documentation for the selected automotive grade.
Recomendado
Automotive Sensor Gateway
The TJA1124CHG/0Z is appropriate for a gateway that converts several LIN sensor links into data for a more capable domain controller. Four receive paths permit parallel communication with low-bandwidth sensors, while four command outputs can support attached actuators or diagnostic components. The device's 5 V to 28 V operating range and integrated pull-up resistors simplify implementation inside a compact automotive electronic unit. Because LIN is a single-wire bus, waveform quality and physical routing remain critical even though data rates are modest. Place the transceiver and supply decoupling close together, follow the prescribed land pattern, and validate the complete interface under the vehicle's transient and electromagnetic-immunity conditions.
Recomendado
Multiplexed Body Electronics Hub
A multiplexed body-electronics hub can consolidate multiple LIN branches around the TJA1124CHG/0Z instead of assigning a separate transceiver to each peripheral. This is particularly useful when door, lighting, climate, and seat-control functions are managed by a central controller. Four integrated pull-up-equipped command channels reduce repetitive termination components, and the optimized transmit waveform is designed to minimize electromagnetic emission. The device's small 24-terminal DHVQFN footprint preserves routing space for power protection and the host processor. During schematic capture, assign every terminal from the official pin table, verify the exposed-pad connection, and review wake-up and bus-fault requirements with the manufacturer application guidance.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para TJA1124CHG/0Z — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | TJA1124AHG/1Z | TJA1124AHG/0Z | TJA1124CHG/1Z |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 24-terminal DHVQFN (5.5 x 3.5 mm) | 24-terminal DHVQFN (5.5 x 3.5 mm) - same | 24-terminal DHVQFN (5.5 x 3.5 mm) - same | 24-terminal DHVQFN (5.5 x 3.5 mm) - same |
| Product Family | TJA1124 | TJA1124 | TJA1124 | TJA1124 |
| Transceiver Configuration | 4 transmit / 4 receive channels | Quad LIN transceiver | Quad LIN transceiver | Quad LIN transceiver |
| Integrated Pull-Up Resistors | Yes | Yes | Yes | Yes |
| Bus Interface | LIN | LIN | LIN | LIN |
| Package Height | 0.85 mm | 0.85 mm | 0.85 mm | 0.85 mm |
Diferenciadores clave
- Four independent LIN channels in a compact package (frente a TJA1124AHG/1Z)
- Integrated commander pull-up resistors (frente a TJA1124AHG/1Z)
- Reduced-emission bus waveform architecture (frente a TJA1124AHG/1Z)
- Automotive-oriented supply range (frente a TJA1124AHG/1Z)
Notas de diseño
Use the 24-terminal DHVQFN land pattern and exposed-pad connection defined by NXP rather than substituting a generic 24-pin QFN drawing. Keep the supply bypass capacitor close to the device's supply and ground terminals, minimize the loop area between those components, and preserve unobstructed thermal-via access beneath the exposed pad. Verify pin-one orientation against the manufacturer package drawing during schematic and layout review.
Route each LIN conductor as a controlled single-wire network with the transceiver positioned near the connector or harness interface. Keep the four channels physically separated where practical, avoid routing beneath high-current switching paths, and provide return-path continuity on the multilayer board. LIN's low data rate does not eliminate sensitivity to fast automotive transients, so protection and grounding remain essential.
Retain the manufacturer's recommended component placement and output-waveform configuration because the TJA1124 is designed to minimize electromagnetic emission. Avoid adding lead inductance, long stubs, or discontinuous return paths near the commander outputs. Validate radiated and conducted emissions in the final enclosure and harness configuration, since adjacent power converters and switch-node wiring can dominate the module's electromagnetic behavior.
Do not infer that every TJA1124 ordering suffix is interchangeable solely because the package outline matches. Compare suffix-specific temperature range, automotive qualification, lifecycle, and electrical requirements in the NXP documentation. Also avoid treating the integrated commander pull-up as a substitute for connector-side or bus-segment protection; select the external network and protection components according to the manufacturer's application guidance.
Información de cumplimiento
The NXP product page identifies TJA1124CHG as active. Explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals declarations were not included in the product information used for this page.
