TJA1022T - Dual LIN 2.2A Transceiver | NXP Semiconductors
料号： TJA1022T ✓ 量产中TJA1022T 概述
A LIN transceiver is a physical-layer interface IC within the broader automotive networking hierarchy. It connects a host microcontroller or LIN protocol controller to a low-speed, single-wire vehicle network by translating controller-side logic signals into LIN bus levels and receiving bus signals for the controller. Two integrated transceivers allow one controller to manage two LIN channels while retaining a common device footprint and application architecture.
The TJA1022 is primarily intended for in-vehicle subnetworks operating at baud rates up to 20 kBd. Its stated compliance includes LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A, and SAE J2602. These protocol and automotive-interface specifications make the TJA1022T relevant to distributed vehicle systems in which body, comfort, lighting, seat, door, and other accessory modules exchange commands and diagnostic information over LIN networks.
The NXP datasheet identifies the TJA1022T and TJA1022TK as pin-compatible with the TJA1020, TJA1021, TJA1027, and TJA1029. It also states that the TJA1022, TJA1024, TJA1027, and TJA1029 are software compatible. These compatibility statements support platform reuse, although designers should still verify operating conditions, enabled features, electrical limits, and package dimensions for each selected order code before treating a part as a replacement.
Typical uses include vehicle body-control modules, door and seat controllers, lighting controllers, climate-control interfaces, sensor nodes, and gateway modules that combine LIN communication with microcontroller processing. The dual-channel configuration can simplify boards that must connect multiple LIN subnets while reducing the number of separate physical-layer transceivers required.
When designing around the TJA1022T, preserve the pin compatibility and protocol expectations of the selected TJA1020, TJA1021, TJA1027, or TJA1029 reference design. The LIN bus interface must be reviewed against the manufacturer datasheet for termination, wiring, protection, grounding, and application-specific guidance. This page combines verified manufacturer information, distributor availability, package details, and compatibility options for faster component selection.
This product data adds practical context beyond basic catalog listings by organizing protocol compliance, package compatibility, verified alternative families, bus-focused applications, and sourcing information. It highlights where the TJA1022T fits in a LIN network while clearly separating verified facts from specifications that still require confirmation from the manufacturer datasheet.
直接替换替代料： TJA1022T ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： TJA1022T （相同外形与封装尺寸） ——差异在于 Package, Product Type, Maximum Baud Rate, Pin Compatibility.
TJA1020T
✅ 直接替换📋 参考替代料（不在目录中）
TJA1021T/20/C
✅ 直接替换联系询价
查看数据手册 →TJA1027T
✅ 直接替换📋 参考替代料（不在目录中）
TJA1029T/2Z
✅ 直接替换联系询价
查看数据手册 →TJA1022T 规格参数
| Product Type | Dual LIN transceiver |
| LIN Channels | 2 channels |
| Maximum LIN Baud Rate | 20 kBd |
| LIN 2.0 Compliance | Compliant |
| LIN 2.1 Compliance | Compliant |
| LIN 2.2 Compliance | Compliant |
| LIN 2.2A Compliance | Compliant |
| SAE J2602 Compliance | Compliant |
| 封装 | SO14 |
| 安装类型 | Surface mount |
TJA1022T so14 引脚配置指南
TJA1022T（so14 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： TJA1022T.
请参阅 数据手册 以查看完整引脚配置。
典型应用
TJA1022T 适用于 6 应用s: Vehicle Body Control Module, Door and Accessory Control, Automotive Lighting Controller, Climate Control Subnetwork Interface, Automotive Sensor Node, LIN Gateway and Communication Hub.
Vehicle Body Control Module
The TJA1022T fits body-control modules that connect distributed door, lighting, seat, and accessory modules to a host microcontroller. Its two LIN transceivers support vehicle subnetworks at rates up to 20 kBd, while stated compliance with LIN 2.0 through LIN 2.2A and SAE J2602 provides a documented protocol baseline. Placing both physical-layer interfaces in one SO14 device can simplify routing and component selection compared with using separate single-channel transceivers. The controller still needs matching LIN protocol handling, and the final design must verify power, grounding, protection, and bus-integration details against the NXP datasheet.
推荐
Door and Accessory Control
The TJA1022T is suitable for door-zone controllers, latch modules, window controls, and seat-position nodes connected through a LIN subnet. The documented maximum rate of 20 kBd matches the intended low-speed in-vehicle environment, while two channels can serve nodes that need separate LIN connections. Compatibility with LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A, and SAE J2602 supports protocol-oriented platform design. Engineers should use the manufacturer datasheet to confirm bus loading, mode-control behavior, supply limits, and pin-level implementation before approving a drop-in replacement.
推荐
Automotive Lighting Controller
A lighting-control module can use the TJA1022T when exterior or interior lamps are distributed over a LIN subnet rather than wired directly to the main controller. The device provides two LIN physical-layer channels, each operating within the family's stated 20 kBd capability, and its listed LIN and SAE J2602 compliance supports standardized in-vehicle communication. The dual-channel arrangement may reduce board area and simplify firmware resource allocation. Lamp drivers and diagnostics remain separate functions, so the LIN interface should be evaluated for bus termination, fault behavior, wake-up strategy, and environmental requirements.
推荐
Climate Control Subnetwork Interface
The TJA1022T can provide the physical interface for climate-control subsystems that distribute sensor, actuator, or panel commands over LIN. A 20 kBd dual-transceiver device aligns with the low-bandwidth, cost-conscious vehicle subnetwork architecture described by NXP. Using one controller with two LIN channels can support separate HVAC and cabin-conditioning subnetworks while preserving a common component footprint. The implementation should account for the number of nodes, bus capacitance, wake-up and sleep requirements, and any protection network required by the vehicle platform.
推荐
Automotive Sensor Node
Compact sensor nodes can use the TJA1022T as the LIN physical-layer interface when the node must exchange measurements or configuration data with a vehicle network. The stated support for LIN 2.2A and SAE J2602 provides relevant protocol context, while the dual-channel architecture offers flexibility where a node serves more than one LIN connection. A low-speed LIN bus helps integrate distributed sensing without requiring a more complex communications physical layer. The exact supply range, standby current, bus-output capability, and environmental limits must be taken from the complete NXP datasheet before schematic sign-off.
推荐
LIN Gateway and Communication Hub
The TJA1022T can support a communication hub that bridges a host controller to two independent LIN subnetworks. Its dual-transceiver arrangement is useful when the gateway needs separate bus connections without duplicating the physical-layer component footprint. The 20 kBd maximum rate is consistent with the LIN networks targeted by the manufacturer, and compliance across several LIN revisions supports use in established vehicle platforms. Gateway designs still require independent bus management, termination strategy, fault containment, and software scheduling; physical-layer compatibility alone does not provide protocol routing or arbitration.
推荐
推荐产品汇总
工程参考数据： TJA1022T ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | TJA1020T | TJA1021T | TJA1027T | TJA1029T |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | SO14 | SO14 | SO14 | SO14 | SO14 |
| Pin Compatibility with TJA1022 | Reference device | Pin compatible | Pin compatible | Pin compatible | Pin compatible |
关键差异点
- Dual-channel integration in one package （对比 TJA1020T)
- Documented support for LIN 2.2A and SAE J2602 （对比 TJA1020T)
- Software-compatible LIN platform option （对比 TJA1029T)
设计说明
Use the NXP TJA1022 datasheet land pattern for the SO14 footprint and confirm every pin function before routing the PCB. The verified compatibility statement covers TJA1020, TJA1021, TJA1027, and TJA1029, but it does not establish that every alternative exposes identical mode-control or sleep behavior. Preserve the manufacturer-recommended decoupling placement and keep the LIN interface away from high-current switching nodes to reduce coupled disturbance.
Do not treat pin compatibility or software compatibility as proof that two LIN devices are interchangeable in every operating condition. Before substituting TJA1020T, TJA1021T, TJA1027T, or TJA1029T, compare supply voltage, bus-output current, dominant-state and sleep behavior, wake-up logic, temperature range, qualification, and error handling. This is especially important in modules that share one PCB across several vehicle configurations.
Follow the NXP application guidance for LIN bus wiring, termination, grounding, and protection. A LIN bus is sensitive to network topology and parasitic capacitance, so the selected transceiver must be evaluated with the intended number of nodes, cable lengths, and vehicle harness conditions. Validate signal integrity and fault recovery at the system level rather than relying only on the stated 20 kBd maximum baud rate.
Verify the transceiver supply range and current consumption from the manufacturer datasheet because these values were not exposed in the supplied web results. Account for the supply current of both integrated channels and any local logic when sizing the regulator and decoupling network. Also evaluate the module's sleep and wake architecture, since a communication transceiver can materially influence total standby power even when the host controller is inactive.
合规信息
The verified NXP product information confirms LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A, and SAE J2602 compliance, but the supplied web snippets do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These values remain unknown rather than being inferred.
