TJA1103AHN/0Z - 100BASE-T1 Automotive Ethernet PHY | NXP
N.º de pieza: TJA1103AHN/0Z ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.23 | $2,23 |
| 10 | $2.1 | $21,00 |
| 100 | $1.95 | $195,00 |
| 500 | $1.8 | $900,00 |
| 1.000 | $1.65 | $1.650,00 |
TJA1103AHN/0Z Descripción general
An automotive Ethernet PHY (physical layer transceiver) is the device that converts digital MAC frames into analog signals suitable for transmission over twisted-pair cabling. Within the vehicle network hierarchy - ECU to MAC to PHY to connector - the PHY is the critical boundary component, and 100BASE-T1 (formerly OPEN Alliance BroadR-Reach) is the dominant in-vehicle networking standard, defined for automotive use in IEEE 802.3 Clause 96.
Key features include IEEE 802.3 Clause 96 compliance, AEC-Q100 Grade 1 qualification (-40 C to +125 C ambient), ISO 26262 ASIL-B compliance, and OPEN Alliance TC-10 compatible sleep/wake-forwarding for low-power bus management. The TJA1103A variant carries the standard MII/RMII and RGMII(-ID) MAC interfaces, while the sibling TJA1103B variant provides an SGMII interface.
On the technical side, the TJA1103 is the third generation of NXP's 100BASE-T1 automotive Ethernet PHY family. It includes integrated adaptive receive equalization, supports IEEE 1588v2 and 802.1AS-2020 2-step timestamping for time-sensitive networking, and passes all state-of-the-art conformance test specifications. Pin strapping via 3-level CONFIG pins sets critical configuration data at start-up or reset.
Typical applications include edge network nodes such as camera modules and sensor ECUs, domain and zonal controllers in the center of the car, and gateway systems bridging CAN, LIN, and Ethernet domains.
Design consideration: supply the PHY with its required 1.1 V, 2.5 V, and 3.3 V rails and follow NXP's layout guidance for the magnetics-free 100BASE-T1 differential pair to preserve signal integrity.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet alone. Pricing data as of 2026-10-19.
Alternativas directas para TJA1103AHN/0Z — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
TJA1103BHN/0Z
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
TJA1103AHN/0C
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
TJA1103AHN/0Z Especificaciones
| Product Type | 100BASE-T1 Automotive Ethernet PHY Transceiver |
| Velocidad de datos | 100 Mbit/s |
| MAC Interface | MII/RMII and RGMII(-ID) |
| Standard Compliance | IEEE 802.3 Clause 96 (100BASE-T1) |
| Max Cable Length | 15 m (unshielded twisted pair) |
| Functional Safety | ISO 26262 ASIL-B compliant |
| Automotive Qualification | AEC-Q100 Grade 1 |
| Temperatura de funcionamiento | -40 C to +125 C ambient |
| Encapsulado | 36-pin HVQFN (6 x 6 mm), exposed pad, wettable flank |
| Supply Voltages | 1.1 V / 2.5 V / 3.3 V |
| Sleep/Wake | OPEN Alliance TC-10 compatible sleep/wake-forwarding |
| Timestamping | IEEE 1588v2 and 802.1AS-2020 2-step timestamping support |
| Receive Equalization | Integrated adaptive receive equalization |
| Configuration | 3-level pin strapping on CONFIG pins after reset |
| Tipo de montaje | Surface Mount |
| Packaging | Tape & Reel (TR), Cut Tape (CT) |
| Family | TJA1103 third-generation 100BASE-T1 PHY family (TJA1103A: MII/RMII/RGMII, TJA1103B: SGMII) |
Guía de configuración de pines de TJA1103AHN/0Z 36-pin hvqfn (6 x 6 mm), exposed pad, wettable flank
Configuración de pines para TJA1103AHN/0Z (encapsulado 36-pin hvqfn (6 x 6 mm), exposed pad, wettable flank). 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 TJA1103AHN/0Z.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
TJA1103AHN/0Z es adecuado para 6 aplicacións: ADAS Camera and Sensor Modules, Domain and Zonal Controllers, Automotive Ethernet Gateways, Infotainment and Display Links, Ethernet-to-CAN Bridging ECUs, Industrial and Test Equipment with Automotive Interfaces.
ADAS Camera and Sensor Modules
The TJA1103AHN/0Z is well suited to ADAS camera and sensor modules because these edge nodes stream 100 Mbit/s-class image and sensor data over short unshielded twisted-pair links of up to 15 m, exactly the envelope of its 100BASE-T1 physical layer per IEEE 802.3 Clause 96. Its integrated adaptive receive equalization compensates for channel loss over automotive harnesses, and its ASIL-B compliance per ISO 26262 supports the safety argument for driver-assistance data paths. In the module, the PHY sits between the image-signal processor MAC (via RMII/RGMII) and the two-wire 100BASE-T1 link, with TC-10 sleep/wake forwarding letting the module power down when the camera is idle. Magnetic-less operation reduces BOM cost in the compact sensor housing.
Recomendado
Domain and Zonal Controllers
In zonal architecture, the TJA1103AHN/0Z provides robust 100BASE-T1 uplinks from edge nodes to the central domain controller. The third-generation PHY family was explicitly designed to provide robust connection to domain controllers in the center of the car. Its IEEE 1588v2 and 802.1AS-2020 2-step timestamping support is essential for time-sensitive networking (TSN) in the backbone, synchronizing sensor fusion and actuation across domains within sub-microsecond boundaries. ASIL-B compliance per ISO 26262 aligns with the safety integrity typically allocated to controller communication paths, while MII/RMII/RGMII flexibility lets the same board design interface to MCUs or SoCs with different MAC widths. AEC-Q100 Grade 1 operation covers under-hood and hot zone mounting.
Recomendado
Automotive Ethernet Gateways
Vehicle gateways bridging CAN, LIN, FlexRay, and Ethernet domains use the TJA1103AHN/0Z as the Ethernet-side PHY. Its 100 Mbit/s full-duplex link over a single unshielded twisted pair reduces harness weight versus four-pair solutions, and conformance to all state-of-the-art 100BASE-T1 test specifications ensures interoperability with PHYs from other vendors on the same bus. TC-10-compatible sleep/wake-forwarding supports network-wide power management, letting the gateway wake edge ECUs on demand and meet vehicle quiescent-current budgets. Pin strapping on 3-level CONFIG pins sets PHY address and master/slave role at reset, simplifying multi-port gateway designs. The wettable-flank HVQFN-36 package supports reliable AOI inspection in automotive SMT processes.
Recomendado
Infotainment and Display Links
The TJA1103AHN/0Z serves as the PHY for 100 Mbit/s Ethernet backbones feeding infotainment head units, displays, and audio amplifiers in the cockpit domain. Its low EMI single twisted-pair 100BASE-T1 signaling helps pass automotive EMC requirements near sensitive radio and audio circuits, while the integrated adaptive receive equalization maintains link integrity across cabin-length wiring runs within the 15 m limit. IEEE 802.1AS-2020 timestamping keeps audio-video transport synchronized across screens and amplifiers, avoiding lip-sync drift. RGMII(-ID) interface mode with internal delay simplifies clock timing to the head-unit SoC. The 6 x 6 mm HVQFN with exposed pad provides the low thermal impedance needed for enclosed dashboard environments up to +125 C ambient.
Recomendado
Ethernet-to-CAN Bridging ECUs
Many legacy-to-new ECUs must translate 100BASE-T1 Ethernet traffic onto CAN or CAN FD segments. The TJA1103AHN/0Z pairs naturally with NXP S12 and SPC5 MCU families: the PHY's RMII mode connects to MCUs with limited MAC pin counts, minimizing routing on dense boards. Its ASIL-B compliance allows the bridge to participate in safety-relevant signal chains such as brake or steering gateways, and TC-10 wake forwarding propagates bus wake-up between the Ethernet and CAN worlds. The -40 C to +125 C AEC-Q100 Grade 1 range suits engine-bay-adjacent mounting. With a unit price from about $2.23 as of 2026-10-19, the PHY keeps bridge-node BOM cost low at volume.
Recomendado
Industrial and Test Equipment with Automotive Interfaces
Engineering teams building automotive network test tools, ECU flashing stations, and HIL systems rely on the TJA1103AHN/0Z to reproduce in-vehicle 100BASE-T1 physical-layer behavior faithfully. Because the device complies with IEEE 802.3 Clause 96 and passes NXP's conformance test suite, stimulus and capture performed with it match vehicle conditions, which is essential when validating third-party ECUs. Its 3-level CONFIG pin strapping lets test fixtures select master or slave roles in hardware, and IEEE 1588v2 2-step timestamping supports precise latency measurement of frames through the device under test. The commercial-grade 36-pin HVQFN footprint also enables socketed or reworked fixture designs using the wettable-flank package for reliable reflow.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para TJA1103AHN/0Z — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | TJA1103BHN/0Z | TJA1103AHN/0C |
|---|---|---|---|
| Package | HVQFN-36 (6 x 6 mm), exposed pad, wettable flank | HVQFN-36 (6 x 6 mm) - same | HVQFN-36 (6 x 6 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Data Rate | 100 Mbit/s (100BASE-T1) | 100 Mbit/s (100BASE-T1) | 100 Mbit/s (100BASE-T1) |
| MAC Interface | MII/RMII/RGMII(-ID) | SGMII | MII/RMII/RGMII(-ID) |
| Functional Safety | ISO 26262 ASIL-B | ISO 26262 ASIL-B | ISO 26262 ASIL-B |
| AEC-Q100 Grade | Grade 1 (-40 C to +125 C) | Grade 1 (-40 C to +125 C) | Grade 1 (-40 C to +125 C) |
| Timestamping | IEEE 1588v2 / 802.1AS-2020 2-step | IEEE 1588v2 / 802.1AS-2020 2-step | IEEE 1588v2 / 802.1AS-2020 2-step |
Diferenciadores clave
- ASIL-B functional safety compliance (frente a TJA1103BHN/0Z)
- Standard MII/RMII/RGMII(-ID) MAC flexibility (frente a TJA1103BHN/0Z)
- Third-generation integration reduces BOM (frente a TJA1103BHN/0Z)
Notas de diseño
The TJA1103AHN/0Z requires three rails: 1.1 V core, 2.5 V PHY/PLL, and 3.3 V I/O. Generate the 1.1 V rail locally with an AEC-Q100-qualified buck or LDO and follow the NXP datasheet decoupling plan - typically bulk capacitance plus high-frequency ceramics at each pin group. Verify power-up sequencing against the datasheet before layout freeze; incorrect sequencing on a multi-rail PHY is a common cause of no-link failures in first-spin boards.
Route the 100BASE-T1 differential pair as a 100-ohm matched pair with length matching and controlled impedance, keeping it away from switching-regulator nodes and antenna traces. The exposed pad must be soldered to a grounded thermal array of vias for both thermal dissipation and return-path integrity. Follow the NXP TJA1103 datasheet layout chapter, which includes reference designs for magnetic-less 100BASE-T1 coupling and ESD strategy at the connector.
Configuration is latched from 3-level CONFIG pins on every reset (POR, RST_N, or register reset). If pull-up/pull-down strapping resistors are mis-sized, a mid-level is sensed and unintended configuration results. Use the resistor values specified in the NXP datasheet strapping table and confirm the intended strap state on the bench after each reset source. Also remember the /0Z ordering suffix encodes configuration - cross-check suffix meaning before substituting orderable variants.
Información de cumplimiento
AEC-Q100 Grade 1 (-40 C to +125 C ambient) and ISO 26262 ASIL-B compliance are confirmed in the NXP datasheet. RoHS/REACH/lead-free/halogen-free status should be confirmed on the official NXP product page (nxp.com/part/TJA1103AHN) compliance documentation.
