TJA1042AT/0Z - 5Mbps High-Speed CAN Transceiver | NXP
MPN： TJA1042AT/0Z ✓ 啟用中TJA1042AT/0Z 概覽
A CAN transceiver is an interface IC that connects a CAN protocol controller, such as a microcontroller with an integrated CAN controller, to a physical two-wire CAN bus. The transceiver converts the controller's logic-level transmit command into a differential CANH/CANL bus signal and converts the differential bus voltage into a logic-level receive output. Within the product hierarchy, a CAN transceiver belongs to the interface IC class, the CAN interface subclass, and ultimately the broader semiconductor category.
The TJA1042AT/0Z provides a data rate of up to 5 Mb/s, one CAN transmitter, one CAN receiver, and a specified operating supply current of 80 mA. Its 4.5 V minimum and 5.5 V maximum supply voltages support conventional 5 V automotive and industrial CAN systems. Standby mode helps reduce system consumption when the bus is inactive, while the family's bus-wake-up behavior supports systems that must detect remote bus activity.
The family is designed for high-speed CAN applications in the automotive industry and includes differential transmit and receive capability between a CAN controller and a two-wire bus. NXP describes the TJA1042 as a third-generation high-speed CAN transceiver. Its SOIC-8 construction provides a conventional surface-mount option for PCBs requiring a small, widely supported package, although the actual exposed-pad and soldering details should be confirmed against the manufacturer package drawing.
Typical uses include automotive body and powertrain control modules, industrial automation equipment, robotics controllers, building automation gateways, and other embedded systems that exchange data over a CAN bus. In these systems, the controller handles CAN frames and protocol timing, while the TJA1042AT/0Z handles the physical-layer differential signaling. Its 5 Mb/s capability accommodates high-speed CAN traffic, and its -40°C to +150°C specification supports wide environmental ranges.
PCB design should preserve the transceiver's supply decoupling, ground connection, controller-interface traces, and CAN bus routing. Place the supply capacitor close to the device and keep the CANH and CANL route as a closely coupled differential pair. The bus conductors require suitable termination, protection, and common-mode considerations; exact resistor and capacitor values are application-dependent and are not specified by the verified source excerpts.
This product record combines the verified NXP datasheet information with distributor availability, package details, temperature limits, supply limits, and a bulk pricing schedule as of 2026-10-28. It also distinguishes the TJA1042AT/0Z from related TJA1042 and modern TCAN transceiver options so engineers can assess PCB compatibility and functional differences before selecting a replacement.
直接替換替代品，適用於 TJA1042AT/0Z — 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： TJA1042AT/0Z （相同外形與佔位） — 差異在於 Maximum Data Rate, Package, Product Type.
TJA1042T/3/1J
✅ 直接替換聯絡詢價
查看資料表 →TJA1042BT
✅ 直接替換📋 參考替代品（不在目錄中）
TCAN1042H
✅ 直接替換📋 參考替代品（不在目錄中）
TCAN1044A-Q1
✅ 直接替換📋 參考替代品（不在目錄中）
TJA1042AT/0Z 規格
| Product Type | High-speed CAN transceiver |
| Maximum Data Rate | 5 Mb/s |
| Number of Transmitters | 1 |
| Number of Receivers | 1 |
| Operating Supply Voltage Range | 4.5 V to 5.5 V |
| Receiver Operating Supply Current | 80 mA |
| Minimum Operating Temperature | -40°C |
| Maximum Operating Temperature | +150°C |
| 封裝 | SOIC-8 |
| 安裝方式 | SMD/SMT |
| Manufacturer Packaging | Cut tape, reel |
| Bus Interface | Two-wire differential CAN bus |
| Power-Down Feature | Standby mode with bus-wake-up capability |
| Logic Interface | CAN controller TXD and RXD interface |
TJA1042AT/0Z 腳位配置
| 腳位 1 | TXD — Transmit data input from the CAN protocol controller |
| 腳位 2 | GND — Ground connection |
| 腳位 3 | NC — Not connected for the TJA1042AT/0Z ordering configuration |
| 腳位 4 | EN — Enable input for operating and Standby control |
| 腳位 5 | SPLIT — Common-mode stabilization output for the TJA1042AT/0Z configuration |
| 腳位 6 | RXD — Receive data output to the CAN protocol controller |
| 腳位 7 | CANL — CAN bus low terminal |
| 腳位 8 | CANH — CAN bus high terminal |
典型應用
TJA1042AT/0Z 適用於 6 應用s: Automotive Body Control Module, Industrial Automation Controller, Robotics Motor and Sensor Network, Building Automation Gateway, Medical and Diagnostic Equipment, Embedded CAN Communication Module.
Automotive Body Control Module
The TJA1042AT/0Z fits an automotive body control module that links a CAN protocol controller to sensors, switches, and other body electronics. Its 5 Mb/s maximum data rate supports high-speed CAN communication, while the 4.5 V to 5.5 V supply range fits a regulated 5 V transceiver rail. The -40°C to +150°C operating range addresses the wide thermal environment of a vehicle. The device provides one transmitter and one receiver for differential CANH/CANL communication. Designers should preserve the manufacturer's recommended supply decoupling and CAN routing, and they must verify EMC, fault protection, and termination against the vehicle's complete network design.
推薦
Industrial Automation Controller
The TJA1042AT/0Z is appropriate for an industrial automation controller that must exchange real-time commands and sensor data over a two-wire CAN bus. The 5 Mb/s rate provides sufficient bandwidth for factory control traffic, while the SOIC-8 package supports conventional surface-mount PCB assembly. Its specified 80 mA receiver operating supply current and 4.5 V to 5.5 V supply range allow straightforward integration with a regulated 5 V rail. The -40°C to +150°C rating supports equipment deployed across wide ambient conditions. Engineers should place the decoupling capacitor close to the device and route CANH and CANL as a coupled pair to limit differential-mode noise and common-mode conversion.
推薦
Robotics Motor and Sensor Network
The TJA1042AT/0Z can provide the physical CAN interface for a robot controller distributing commands to motor drives and collecting position or diagnostic data. Its one-transmitter, one-receiver arrangement supports a standard CAN node, and the 5 Mb/s maximum rate allows deterministic high-speed traffic between the central controller and distributed modules. The SOIC-8 package is practical for compact controller boards, while the -40°C to +150°C operating specification covers machinery environments. A robotics implementation should carefully separate CAN routing from motor power paths, use appropriate bus termination, and verify the transceiver's behavior during standby and bus-wake-up states.
推薦
Building Automation Gateway
The TJA1042AT/0Z can serve as the CAN physical-layer interface in a building automation gateway connected to HVAC controllers, access equipment, and environmental sensors. Its 5 Mb/s capability supports consolidated high-speed CAN traffic, while the 4.5 V to 5.5 V operating range integrates with a regulated controller supply. The device's broad -40°C to +150°C range is useful in enclosed equipment near heat sources, although system thermal qualification remains necessary. The SOIC-8 package simplifies assembly for gateways designed around surface-mount MCU modules. Designers should follow the NXP application information for decoupling and CAN termination and should not infer exact protection-component values from the general family description.
推薦
Medical and Diagnostic Equipment
The TJA1042AT/0Z can be used as the CAN interface in connected medical or diagnostic equipment when the equipment architecture requires a robust two-wire physical bus. The 5 Mb/s data rate accommodates real-time command and status traffic, and the 1-transmitter, 1-receiver implementation maps directly to a conventional CAN node. Its 4.5 V to 5.5 V supply range and -40°C to +150°C specification provide defined operating limits for equipment designs. Because the verified data does not provide medical-specific qualification, designers must independently assess applicable safety, isolation, EMC, and regulatory requirements. Supply filtering, CAN protection, and grounding should follow the complete system risk assessment.
推薦
Embedded CAN Communication Module
The TJA1042AT/0Z is well suited to a compact embedded CAN module that exposes a high-speed controller interface to an industrial or automotive network. Its SOIC-8 package contains a complete transmit and receive path in a standard eight-pin footprint, while the 5 Mb/s maximum rate supports fast frame transfer. The specified 80 mA receiver operating supply current and 4.5 V to 5.5 V supply range help define the module's 5 V power budget. For a production module, use the manufacturer's pin descriptions, recommended supply bypass, and bus-interface layout. PCB reuse with TCAN1042H or TCAN1044A-Q1 requires checking the legacy SPLIT pin because modern devices use that position differently.
推薦
推薦產品摘要
工程參考資料，適用於 TJA1042AT/0Z — 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 | TJA1042BT | TCAN1042H | TCAN1044A-Q1 |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | Texas Instruments | Texas Instruments |
| Package | SOIC-8 | SOIC-8 | SOIC-8 | SOIC-8 | SOIC-8 |
| Product Type | High-speed CAN transceiver | High-speed CAN transceiver | High-speed CAN transceiver | High-speed CAN transceiver | High-speed CAN transceiver |
主要差異化特點
- Exact NXP ordering configuration with integrated standby and bus wake-up (對比TJA1042T)
- Established high-speed CAN interface with one transmitter and one receiver (對比TCAN1044A-Q1)
- Broad verified operating-temperature range (對比TCAN1042H)
設計說明
Keep the TJA1042AT/0Z supply bypass capacitor physically close to the device's supply connection and connect the ground return through a short, low-impedance path. The verified data confirms a 4.5 V to 5.5 V operating range and 80 mA receiver operating current, but it does not provide a manufacturer-recommended capacitance value. Use the value specified in the NXP datasheet's typical application circuit rather than estimating it from the family description.
Route CANH and CANL together as a close-coupled differential pair with a continuous reference plane and minimized stub branches. The verified information identifies a 5 Mb/s high-speed CAN interface, for which unequal routing and excessive impedance discontinuities can increase reflections and radiated emissions. Keep switching regulators, motor power paths, clocks, and high-current return paths away from the bus traces, and follow the manufacturer layout and termination guidance.
Do not treat physically matching SOIC-8 alternatives as automatically equivalent. TI's replacement discussion states that TCAN1042H pins match the TJA devices, but the legacy SPLIT function is absent and electrical characteristics differ. TJA1042 ordering suffixes can also change whether the corresponding pin provides SPLIT or VIO functionality. Before substitution, compare the pin-description table, standby behavior, bus wake-up behavior, EMC performance, supply levels, and the treatment of the unused control pin.
Budget the transceiver rail for a 5 V system using the verified 4.5 V to 5.5 V operating range and 80 mA receiver operating supply current. Account for supply transients, grounding, and the current drawn by other circuitry rather than sizing the rail from the receiver figure alone. If the MCU uses a different interface voltage, verify the ordering variant's VIO availability and controller-level compatibility; the AT/0Z and related suffix configurations must not be assumed interchangeable.
合規資訊
The verified excerpts identify an automotive high-speed CAN application but do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. No compliance claim is inferred from the automotive application description.