TJA1042T/1J - High-Speed CAN Transceiver | NXP | Automotive
MPN： TJA1042T/1J ✓ 啟用中TJA1042T/1J 概覽
A CAN transceiver is an interface IC that converts logic-level TXD and RXD signals into the dominant and recessive voltage levels carried by a CAN bus. It also places the bus-side driver and receiver between the controller and the physical network, helping the controller communicate over a robust multi-node differential bus. The TJA1042 family belongs to the broader CAN transceiver, communication interface, interface IC, and semiconductor hierarchy.
The key verified feature set is high-speed CAN operation, differential transmit and receive, standby operation, 8-pin SOIC packaging, and automotive-oriented application positioning. The standby function is useful when a node must reduce activity while retaining the CAN interface. The exact maximum data rate, supply range, loop delay, bus fault behavior, thermal limits, and electrical thresholds are not present in the supplied verified excerpts, so those values must be confirmed from the complete manufacturer datasheet before design release.
The TJA1042 is intended for automotive electronic control units, body controllers, powertrain controllers, gateway modules, instrument clusters, and other embedded systems that use a CAN protocol controller. In a typical circuit, the MCU CAN controller connects to TXD and RXD, while CANH and CANL connect to the external bus through the board's approved network interface and termination arrangement. The transceiver is the boundary between digital controller signaling and the differential physical bus.
Designers should verify the exact NXP ordering code, supply voltage, transceiver mode timing, bus termination, common-mode environment, loop delay, and external-component recommendations against the complete TJA1042 datasheet. Because the supplied web data does not expose a complete pin-level table, pricing schedule, compliance declaration, or lifecycle statement, those items are marked as needing verification rather than inferred. The TJA1042T/1J is best evaluated by engineers who need a standby-capable, high-speed CAN physical-layer device in an SOIC footprint.
直接替換替代品，適用於 TJA1042T/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： TJA1042T/1J （相同外形與佔位） — 差異在於 Package, Protocol, Product Type, Bus Interface, Maximum Data Rate.
TJA1042T,118
✅ 直接替換📋 參考替代品（不在目錄中）
TJA1042T/3,118
✅ 直接替換📋 參考替代品（不在目錄中）
TJA1051T/3,118
✅ 直接替換📋 參考替代品（不在目錄中）
TJA1027T/20,1J
✅ 直接替換📋 參考替代品（不在目錄中）
TJA1021T/20/C
✅ 直接替換聯絡詢價
查看資料表 →TJA1042T/1J 規格
| Product Type | High-speed CAN transceiver |
| Bus Interface | Differential two-wire CAN bus |
| Transmit and Receive | Differential transmit and receive capability |
| CAN Mode | High-speed CAN |
| Standby Feature | Yes |
| 封裝 | 8-pin SOIC |
| Package Family | SOIC-8 surface-mount package |
| Supplier Package Description | 1/1 Transceiver Half CANbus 8-SO |
| Protocol Controller Interface | CAN protocol controller interface |
| Transmitter Input | Logic-level TXD input |
| Receiver Output | Logic-level RXD output |
| Bus Outputs | CANH and CANL differential bus connections |
| Application Domain | Automotive high-speed CAN systems |
| 安裝類型 | Surface mount |
| 腳位數 | 8 pins |
TJA1042T/1J 1/1 transceiver half canbus 8-so 腳位配置指南
TJA1042T/1J（1/1 transceiver half canbus 8-so 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： TJA1042T/1J.
請參閱 資料表 以查看完整腳位配置。
典型應用
TJA1042T/1J 適用於 6 應用s: Automotive Electronic Control Unit CAN Interface, Body Control Module Network Node, Powertrain and Chassis Controller, Vehicle Gateway and Communication Hub, Automotive Diagnostic Interface, Industrial CAN Embedded Controller.
Automotive Electronic Control Unit CAN Interface
The TJA1042T/1J fits an ECU CAN node because it is specifically identified by NXP as a high-speed CAN transceiver for automotive applications. Place it between the microcontroller CAN controller and the external CANH/CANL network, with TXD and RXD connected to the controller-side interface. The differential bus connection supports communication across a vehicle network, while standby mode can reduce activity when the node requires a low-power state. Before layout release, verify the complete datasheet for supply voltage, timing, loop delay, bus fault behavior, and transceiver-mode transitions.
推薦
Body Control Module Network Node
A body control module can use the TJA1042T/1J when it needs a compact, high-speed physical interface to a vehicle CAN network. The controller generates TXD and receives RXD, while the transceiver drives and senses CANH and CANL. This separation keeps the digital controller away from the direct bus-side signaling and supports a robust automotive network architecture. The standby feature should be checked against the module's wake, sleep, and diagnostic behavior; exact timing and current values require the complete NXP datasheet.
推薦
Powertrain and Chassis Controller
The TJA1042T/1J is applicable to powertrain or chassis controllers that exchange diagnostic and control data over a high-speed CAN bus. Its high-speed CAN positioning and standby mode allow the physical-layer device to fit a controller that needs normal communication as well as a managed low-activity state. The actual suitability depends on the ECU's electrical environment, including supply transients, common-mode range, bus termination, fault tolerance, and temperature requirements. None of those detailed limits is included in the supplied excerpts, so engineering validation must use the current manufacturer datasheet.
推薦
Vehicle Gateway and Communication Hub
A vehicle gateway can use the TJA1042T/1J as a CAN physical-layer endpoint when it must connect an MCU CAN controller to a two-wire differential network. The gateway benefits from the transceiver's explicit high-speed CAN and standby positioning, allowing communication during normal operation and controlled state changes during diagnostic or sleep scenarios. Confirm whether the gateway's bus topology, termination strategy, transceiver mode requirements, and network-management timing match the device's complete datasheet specifications.
推薦
Automotive Diagnostic Interface
For an automotive diagnostic node, the TJA1042T/1J provides the CAN physical layer needed by a controller that handles diagnostic request and response traffic. TXD carries the controller's transmit command, RXD reports the received bus state, and CANH/CANL connect to the vehicle network. Standby mode may be useful during controlled inactivity, but diagnostic behavior must be validated against the system's sleep, wake, and bus-sampling requirements. Verify protocol timing and electrical thresholds using the complete manufacturer documentation.
推薦
Industrial CAN Embedded Controller
The TJA1042T/1J can also be evaluated for industrial or equipment-control systems that use a conventional high-speed CAN bus and need the NXP transceiver's standby capability. The MCU or dedicated CAN controller connects to TXD and RXD, while the physical bus connects through CANH and CANL. Because the verified data positions the device primarily for automotive use, industrial adoption should include a full review of environmental ratings, EMC immunity, temperature, supply tolerance, and protection requirements rather than relying only on its high-speed CAN function.
推薦
推薦產品摘要
工程參考資料，適用於 TJA1042T/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 | TJA1042T,118 | TJA1042T/3,118 | TJA1051T/3,118 | TJA1027T/20,1J | TJA1021T/20/C |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Supplier Listing | DigiKey and Mouser product pages | DigiKey product page | Comparison and distributor references | Comparison references | Comparison references | Comparison references |
主要差異化特點
- Standby-capable high-speed CAN positioning (對比TJA1042T,118)
- Automotive-oriented CAN physical interface (對比TJA1051T/3,118)
- SOIC-8 integration for compact controller boards (對比TJA1021T/20/C)
設計說明
Route TXD, RXD, CANH, and CANL according to the complete NXP datasheet layout guidance and the vehicle network implementation requirements. Keep the CAN bus differential pair tightly coupled, minimize discontinuities and unnecessary stubs, and place the transceiver close to the connector or bus-entry point. The supplied data confirms an 8-pin SOIC interface but does not provide a manufacturer PCB layout drawing, so do not infer exact spacing or grounding from the package alone.
Validate the transceiver supply rail against the complete NXP electrical specification before connecting an ECU power domain. The supplied excerpts identify the product as an automotive high-speed CAN transceiver but do not state the operating voltage, quiescent current, or supply transient limits. Confirm decoupling requirements, startup behavior, and the relationship between controller supply states and standby mode in the full datasheet and reference design.
Use the device's verified TXD and RXD timing characteristics to set controller and transceiver interface margins. Do not assume that every SOIC-8 CAN transceiver is interchangeable: standby polarity, bus-idle behavior, propagation delay, dominant-state handling, and split-pin functions can differ. Confirm the exact ordering-code pin functions and mode table before substituting a related TJA-family part.
Do not select TJA1042T/1J solely because it is labeled an 8-SO CAN transceiver. First verify TXD and RXD logic levels, supply range, CANH/CANL behavior, standby timing, bus fault handling, and package pinout. Also verify whether the selected TJA1042 ordering variant uses a split or control-related function on the relevant pin; the supplied cross-reference excerpts explicitly flag ordering-code differences that must be checked.
合規資訊
The supplied verified excerpts identify automotive positioning but do not contain explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. These fields remain unknown rather than assumed.