TJA1086HNJ - FlexRay Active Star Coupler | NXP
MPN： TJA1086HNJ ✗ 停產TJA1086HNJ 概覽
A FlexRay active star coupler is an interface and network-topology component that distributes a communication-controller signal between two physical branches while providing the required network termination and electrical behavior. In the broader hierarchy, it belongs to automotive network interfaces, transceivers, and physical-layer devices. It is used where an electronic control unit needs deterministic communication with other FlexRay nodes through a star-coupled network.
The TJA1086HNJ is identified by distributor listings as a 1TX/1RX FlexRay transceiver-class device rated for 10 Mbps and supplied in a 44-pin HVQFN package with an exposed pad. Its automotive qualification is indicated by the Arrow listing, which identifies the part as AEC-Q100 automotive. The package and exposed-pad construction are important for thermal design and PCB layout, while the two-branch architecture is important when planning network topology.
The TJA1086 can be used in automotive ECUs, gateway modules, body controllers, powertrain controllers, and other FlexRay nodes. Its dedicated communication-controller interface allows integration into an ECU, while TRXD0 and TRXD1 permit multiple TJA1085 or TJA1086 devices to increase the number of branches in a network. The supplied search data does not provide complete electrical limits, pin names, package dimensions, or absolute maximum ratings, so those values must be confirmed in the manufacturer datasheet before design release.
For PCB implementation, preserve the manufacturer’s recommended HVQFN land pattern, exposed-pad connection, decoupling, and return-path arrangement. Keep FlexRay traces short and controlled, provide the specified termination and protection networks, and verify signal integrity with the intended communication-controller configuration. Do not infer pin compatibility from a similar package name; verify every pin, supply requirement, and timing parameter against the TJA1086 datasheet.
This page consolidates verified distributor identification, FlexRay functionality, package information, sourcing links, and engineering-selection guidance. It distinguishes verified facts from parameters that require datasheet confirmation, helping engineers identify whether the TJA1086HNJ fits an automotive FlexRay star-coupler design before requesting detailed technical documents.
直接替換替代品，適用於 TJA1086HNJ — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此產品無可直接替換的替代品。
申請替代品TJA1086HNJ 規格
| Product Type | FlexRay active star coupler |
| Manufacturer | NXP Semiconductors |
| Transmit Channels | 1 TX |
| Receive Channels | 1 RX |
| 資料速率 | 10 Mbps |
| Network Branches | 2 branches |
| FlexRay Electrical Physical Layer Compliance | V3.0.1 |
| Communication Controller Interface | Dedicated CC interface |
| Branch Expansion Interfaces | TRXD0/1 |
| 封裝 | 44-pin HVQFN (9x9 mm) |
| 安裝類型 | Surface mount |
| Automotive Qualification | AEC-Q100 automotive |
TJA1086HNJ 44-pin hvqfn (9x9 mm) 腳位配置指南
TJA1086HNJ（44-pin hvqfn (9x9 mm) 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： TJA1086HNJ.
請參閱 資料表 以查看完整腳位配置。
典型應用
TJA1086HNJ 適用於 6 應用s: Automotive FlexRay ECU, Body Control Module, Powertrain Controller, Vehicle Gateway Module, Deterministic Vehicle Network, Branch-Expansion Network.
Automotive FlexRay ECU
The TJA1086HNJ fits an automotive ECU that connects a FlexRay communication controller to two physical network branches. Its one-transmit and one-receive configuration provides the basic active-star path, while the dedicated CC interface supports integration with the controller. The verified 10 Mbps rating establishes the intended communication class, but supply voltage, timing limits, termination values, and pin-level connections must be taken from the NXP datasheet before schematic release.
推薦
Body Control Module
A body control module can use the TJA1086HNJ where deterministic FlexRay connectivity is required between an internal communication controller and vehicle branch wiring. The active-star topology helps organize the physical network while the two-branch connection reduces the need for a separate discrete routing arrangement. The device is listed for automotive AEC-Q100 use, although the supplied sources do not provide the exact vehicle platform, ECU qualification report, or external protection-component values.
推薦
Powertrain Controller
The TJA1086HNJ is applicable to a powertrain controller requiring a FlexRay physical-layer connection to two network branches. Its active-star function and 10 Mbps data-rate classification fit deterministic automotive communication architectures, while TRXD0/1 interfaces support branch expansion with related TJA1085 and TJA1086 devices. Final use requires checking the NXP electrical limits, automotive qualification details, environmental requirements, and network timing against the vehicle program.
推薦
Vehicle Gateway Module
A gateway module can place the TJA1086HNJ at a FlexRay branch connection when the module must distribute a communication-controller signal between two branches. This is useful where the gateway participates in a star-coupled FlexRay topology and may later expand branches through compatible TJA1085/TJA1086 arrangements. The supplied data confirms the branch-expansion concept but does not specify gateway isolation, diagnostic behavior, or protocol routing, so those functions must be designed separately.
推薦
Deterministic Vehicle Network
The TJA1086HNJ is relevant to deterministic in-vehicle networks that use FlexRay for time-triggered communication. Its active-star coupler role connects two branches, while the one-TX/one-RX structure and 10 Mbps classification provide the verified core interface identity. Engineers should validate signal integrity, termination, protection, and ECU fault behavior against the complete NXP datasheet because those electrical details are absent from the supplied search data.
推薦
Branch-Expansion Network
The TJA1086HNJ can be incorporated into a FlexRay network architecture that uses several TJA1085 and TJA1086 devices to increase branch count through TRXD0/1 connections. This application is especially relevant when a single two-branch star coupler is insufficient for the ECU topology. The documentation establishes the multi-device concept, but maximum topology, timing, impedance, termination, and failure-mode constraints must be confirmed before implementation.
推薦
工程參考資料，適用於 TJA1086HNJ — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 |
|---|---|
| Package | 44-pin HVQFN (9x9 mm) |
| Brand | NXP Semiconductors |
| Product Type | FlexRay active star coupler |
| Transmit Channels | 1 TX |
| Receive Channels | 1 RX |
| Data Rate | 10 Mbps |
| Network Branches | 2 branches |
| FlexRay Physical Layer Compliance | V3.0.1 |
| Automotive Qualification | AEC-Q100 automotive |
| Communication Controller Interface | Dedicated CC interface |
| Branch Expansion Interface | TRXD0/1 |
主要差異化特點
- Active two-branch FlexRay star-coupler function (對比Generic FlexRay transceiver)
- One-transmit and one-receive channel configuration (對比Multi-channel FlexRay interface)
- TRXD0/1 branch expansion architecture (對比Single isolated FlexRay branch device)
設計說明
Use the manufacturer’s HVQFN land pattern and exposed-pad layout exactly. Preserve short, direct connections for FlexRay and power pins, maintain a continuous ground reference beneath the device where recommended, and verify the exposed-pad solder and thermal design during PCB review. The supplied search data identifies the package as 44-pin HVQFN, 9x9 mm, but does not provide pad dimensions, so those values must come from the NXP package drawing.
Treat the FlexRay branches as controlled transmission lines rather than general-purpose logic nets. Follow the manufacturer’s termination, routing, branch, and protection recommendations, and check rise time, impedance, reflections, and communication-controller timing with the complete datasheet. The verified 10 Mbps rating is not enough to select trace geometry or termination by itself; those values depend on the complete electrical specification and board-level network design.
Do not substitute a similarly named FlexRay device solely because it uses a 44-pin HVQFN package. Confirm pin names, exposed-pad function, supply rails, absolute maximum ratings, termination behavior, and branch compatibility against the exact NXP datasheet. The supplied cross-reference search did not identify a verified pin-compatible replacement, so any proposed substitute requires schematic, footprint, timing, and system-level validation.
合規資訊
Arrow identifies the TJA1086HNJ as an automotive AEC-Q100 part. RoHS, REACH, lead-free, halogen-free, and conflict-minerals status are not provided in the verified data.
