TJA1027T/20/1J - 20 kBd LIN 2.2A Transceiver | NXP
MPN： TJA1027T/20/1J ✓ 啟用中TJA1027T/20/1J 概覽
A LIN transceiver is the physical-layer interface between a microcontroller-based LIN node controller and the wired LIN bus. It converts controller transmit commands into a shaped bus signal, receives bus states for the controller, and provides the voltage translation and bus termination needed in an automotive low-speed serial network. The TJA1027 belongs to the interface IC and automotive communication transceiver hierarchy.
The TJA1027T/20/1J supports LIN 2.0 through LIN 2.2A operation and SAE J2602 network requirements. Its transmit path creates an optimized LIN waveform intended to minimize electromagnetic emissions, while the LIN bus output is pulled high through an internal termination resistor. The 20 kBd operating rate supports typical in-vehicle LIN sub-networks rather than high-speed communication links.
NXP identifies the TJA1027 as pin-compatible with the TJA1020 and TJA1021, and the broader datasheet compatibility statement also identifies TJA1022 and TJA1029 compatibility. Its 8-pin SOIC package supports conventional surface-mount assembly, while the automotive qualification designation supports use in vehicle electronic control units when the complete system requirements call for an automotive-grade component.
Typical applications include LIN-controlled vehicle body modules, seat and door controllers, climate-control panels, switch-bank electronics, ambient-light sensors, and other low-speed vehicle sub-networks. In each case, the transceiver provides the physical bus interface while a separate LIN protocol controller or LIN-capable microcontroller handles frames, scheduling, diagnostics, and higher-layer communication.
Designers should account for the transceiver and controller supply domains, LIN bus pull-up resistance, ground reference quality, waveform timing, EMC layout, and unused-pin treatment. The 5 V to 18 V operating range does not remove the need to protect the LIN line against automotive transients; the bus network must be evaluated using the application’s voltage, ground-offset, slew-rate, and fault-recovery requirements.
This product page combines NXP protocol and compatibility information with package-focused alternatives, selection guidance, and implementation considerations. It distinguishes true pin-compatible options from merely similar LIN devices and highlights the operating conditions that should be checked before replacing an existing TJA1027 implementation.
直接替換替代品，適用於 TJA1027T/20/1J — 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。
此系列的變體
與下列產品可直接替換的同系列型號： TJA1027T/20/1J （相同外形與佔位） — 差異在於 Package, Product Type, Maximum Baud Rate, Pin Compatibility, Pin Count.
TJA1020
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TJA1021T/20/C
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →TJA1022TK
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →TJA1029T/2Z
✅ 直接替換聯絡詢價
查看資料表 →TJA1028T/5V0/10/2Z
✅ 直接替換📋 參考替代品（不在目錄中）
TJA1027T/20/1J 規格
| Product Type | Single-channel LIN bus transceiver |
| LIN Bus Configuration | 1/1 half-duplex transceiver |
| Maximum LIN Baud Rate | 20 kBd |
| Supply Voltage Range | 5 V to 18 V |
| LIN 2.0 Compliance | Compliant |
| LIN 2.1 Compliance | Compliant |
| LIN 2.2 Compliance | Compliant |
| LIN 2.2A Compliance | Compliant |
| SAE J2602 Compliance | Compliant |
| ISO 17987-4:2016 | Compliant for 12 V |
| Automotive Qualification | AEC-Q100 |
| 封裝 | 8-pin SOIC |
| Package Type | SOIC-8 |
| 安裝類型 | Surface mount |
| Internal LIN Termination | Pull-up through internal termination resistor |
| Transmit Waveform | Optimized LIN bus signal for minimized electromagnetic emissions |
| Compatible NXP Families | TJA1020, TJA1021, TJA1022 and TJA1029 |
TJA1027T/20/1J soic-8 腳位配置指南
TJA1027T/20/1J（soic-8 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： TJA1027T/20/1J.
請參閱 資料表 以查看完整腳位配置。
典型應用
TJA1027T/20/1J 適用於 6 應用s: Vehicle Door Control Module, Automotive Climate-Control Panel, Seat Adjustment Controller, Automotive Switch Bank, Ambient-Light Sensor Node, Body Control Module.
Vehicle Door Control Module
The TJA1027T/20/1J fits a LIN door-control node that operates a lock, window switch or latch actuator. Its 20 kBd LIN rate matches the speed class used by automotive LIN sub-networks, while LIN 2.2A and SAE J2602 compliance provides protocol and qualification support for vehicle applications. The 5 V to 18 V transceiver supply range allows the interface to operate from a vehicle-compatible supply domain, subject to module-level transient protection. Place the transceiver beside the LIN bus connector, provide a low-impedance ground return, and route the LIN output away from sensitive sensor and actuator-control traces to limit electromagnetic coupling.
推薦
Automotive Climate-Control Panel
The TJA1027T/20/1J is suitable for a climate-control panel that connects button inputs, a display controller and motorized vents over a LIN sub-network. Its 20 kBd communication rate is appropriate for the low-bandwidth command traffic typical of LIN, and its optimized transmit waveform is intended to minimize electromagnetic emissions in a densely packaged passenger compartment. The 8-pin SOIC format simplifies integration beside a LIN-capable microcontroller. Keep the controller interface short, maintain a common ground between the transceiver and processor, and follow the manufacturer bus recommendations when selecting the external pull-up and protection network.
推薦
Seat Adjustment Controller
A seat adjustment controller can use the TJA1027T/20/1J to connect motor-position sensors and adjustment switches through a LIN network. The 20 kBd rate is appropriate for command and status traffic that does not require a high-speed automotive bus, while the transceiver’s 5 V to 18 V operating range supports integration into vehicle electronic modules. Its internally terminated high-side LIN output and emission-shaped transmit waveform support predictable bus behavior. Engineers should verify external pull-up resistance, fault recovery and ground offsets, and should provide suitable protection for any switch or motor circuitry connected outside the LIN bus.
推薦
Automotive Switch Bank
The TJA1027T/20/1J can interface a distributed switch bank containing window, lighting or HVAC switches with a central body controller. LIN’s single-wire communication reduces wiring complexity in vehicle sub-networks, and the transceiver supports up to 20 kBd with LIN 2.2A and SAE J2602 compatibility. The 8-pin SOIC package permits conventional PCB routing between the logic controller and bus connector. Preserve controlled bus rise and fall behavior by following the manufacturer’s pull-up and capacitance guidance, and locate protection components where they can clamp connector-borne transients without degrading the LIN waveform.
推薦
Ambient-Light Sensor Node
The TJA1027T/20/1J is appropriate for an ambient-light sensor node that reports measurements and operating status to a vehicle controller through LIN. The 20 kBd bus rate supports the limited data volume of a sensor node, while the dedicated transceiver provides a clearer physical separation between the controller logic and the bus waveform. The optimized transmission waveform helps reduce electromagnetic emissions in a compact sensor housing. Use a low-inductance ground connection, keep the LIN trace short, avoid placing high-current switching paths beside the bus, and confirm that the module’s supply and protection design remains compatible with the 5 V to 18 V transceiver range.
推薦
Body Control Module
The TJA1027T/20/1J can serve as a LIN interface within a body control module connected to distributed automotive loads. Its support for LIN 2.0 through LIN 2.2A and SAE J2602 makes it appropriate for modern in-vehicle LIN sub-networks operating at up to 20 kBd. The 5 V to 18 V operating range is useful in vehicle electronics, while the 8-pin SOIC package keeps the footprint compact for multi-function control boards. Validate the full network’s pull-up configuration, bus capacitance, fault behavior and EMC performance, and ensure the transceiver ground is referenced cleanly to the controller and vehicle ground network.
推薦
工程參考資料，適用於 TJA1027T/20/1J — 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 | TJA1020 | TJA1021 | TJA1022 | TJA1029 | TJA1028T/5V0/10/2Z |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | SOIC-8 | SOIC-8 | SOIC-8 | SOIC-8 | SOIC-8 | SOIC-8 |
| Product Type | Single-channel LIN bus transceiver | LIN transceiver | LIN transceiver | LIN transceiver | LIN transceiver | LIN transceiver |
| Maximum LIN Baud Rate | 20 kBd | 20 kBd | 20 kBd | 20 kBd | 20 kBd | 20 kBd |
主要差異化特點
- Documented modern LIN and SAE compatibility (對比TJA1020)
- Explicit pin compatibility with established TJA102x families (對比TJA1021)
- Common 20 kBd operating class (對比TJA1029)
- Same 8-pin SOIC footprint across the documented alternative set (對比TJA1022)
設計說明
Place the TJA1027T/20/1J near the LIN connector or transceiver interface and keep the LIN trace short. Provide a low-impedance ground connection between the transceiver ground, LIN-capable controller and vehicle ground network. Avoid routing the bus beside high-current motor, relay or switching-supply traces, and keep protection components close to connector entry so that their capacitance and inductance do not distort the nominal 20 kBd LIN waveform.
Use the optimized transmit path only with the bus pull-up and network capacitance specified by NXP. Verify the rise-time behavior across minimum and maximum bus lengths because excessive capacitance can slow edges and contribute to EMC failures. Maintain a symmetrical ground reference and use a continuous ground plane or equivalent low-impedance return path. EMC validation should be performed with the final harness, connector, module enclosure and neighboring loads rather than only on the bare PCB.
Do not treat package compatibility as proof that every LIN transceiver feature is identical. Before replacing the TJA1027T/20/1J, compare the exact alternative’s supply range, protocol revisions, controller-interface behavior, sleep current, wake-up operation, bus fault recovery and temperature grade. The target supports LIN 2.2A, SAE J2602 and ISO 17987-4:2016 for 12 V, so a substitute that does not satisfy the applicable vehicle network requirement may still require board or firmware changes.
The transceiver operates from a 5 V to 18 V supply, but the complete automotive module may also require reverse-battery, load-dump and transient protection. Separate the protected vehicle input from the transceiver supply and ensure that voltage at the IC remains within its limits during all specified vehicle conditions. Confirm controller and transceiver logic levels, enable polarity and timing in the system power-up sequence to prevent unintended bus states during reset.
合規資訊
The distributor listing identifies the TJA1027T/20/1J as automotive AEC-Q100. The manufacturer datasheet confirms LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A, SAE J2602 and ISO 17987-4:2016 for 12 V. RoHS, REACH, lead-free, halogen-free and conflict-minerals status were not stated for the exact ordering code and remain unknown.