TJA1448BT/0Z - Dual 5Mbps CAN FD Transceiver | NXP
MPN： TJA1448BT/0Z ✓ 啟用中TJA1448BT/0Z 概覽
A CAN transceiver is the physical-layer interface between a digital CAN or CAN FD controller and a differential two-wire bus. It converts controller logic levels into CAN bus signals and reconstructs received bus information for the controller. Within the power-management and semiconductor hierarchy, the TJA1448 belongs to the CAN interface IC class, supports ISO 11898-2:2016 physical-layer operation, and is interoperable with high-speed CAN systems.
The TJA1448BT/0Z includes Normal and Standby operating modes, low-power operation, wake-up support, transmitter-dominant timeout, electrostatic-discharge protection, undervoltage protection, and thermal shutdown protection. Its VIO interface allows direct connection to either 3.3 V or 5 V microcontrollers, reducing the need for level-shifting circuitry when the transceiver and controller use different logic voltages.
The device supports Classical CAN and CAN FD signaling at data rates up to 5 Mbit/s. Two integrated channels make it suitable for systems that need two CAN bus connections without using separate single-channel transceivers. Its high-temperature operating range supports industrial, automotive, and communications equipment where the ambient enclosure temperature may substantially exceed conventional commercial limits.
Typical uses include automotive body and powertrain electronics, industrial automation equipment, building automation gateways, CAN-based sensors, robotics, and embedded control systems. In a dual-channel installation, each channel connects to a separate CAN FD controller interface and its associated differential bus wiring while sharing the device supply and operating-mode controls.
Designers should preserve the datasheet-defined decoupling and bus-termination layout, validate logic compatibility at VIO, and verify that the PCB footprint matches the 14-pin SOIC outline. The standby and wake-up functions should be checked against the controller's power-management strategy so the remote node can enter low-power operation without preventing required bus communication.
This page combines the manufacturer identification, package and feature information, replacement context, comparison parameters, and application-oriented design guidance into a concise engineering reference for selecting and implementing the TJA1448BT/0Z.
直接替換替代品，適用於 TJA1448BT/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： TJA1448BT/0Z （相同外形與佔位） — 差異在於 Mounting Type, Number of Channels, Package.
TJA1448BT/0Z 規格
| Product Type | Dual CAN FD transceiver |
| Number of Channels | 2 channels |
| Maximum CAN FD Data Rate | 5 Mbit/s |
| Supply Voltage Range | 4.5 V to 5.5 V |
| VIO Logic Voltage | 3.3 V or 5 V |
| 工作溫度範圍 | -40°C to +150°C |
| 封裝 | 14-pin SOIC |
| 安裝類型 | Surface mount |
| Bus Interface | Two-wire differential CAN bus |
| Protocol Support | Classical CAN and CAN FD |
| Physical Layer Standard | ISO 11898-2:2016 |
| Automotive Interface Standards | SAE J2284-1 through SAE J2284-5 |
| Operating Modes | Normal and Standby modes |
| Low-Power Feature | Low-power mode with wake-up function |
| Fault Protection | ESD protection, undervoltage protection, and thermal shutdown protection |
| Transmitter Protection | TXD dominant timeout |
| RoHS 狀態 | RoHS compliant |
| 生命週期狀態 | Active |
| Manufacturer Datasheet Length | 38 pages |
TJA1448BT/0Z 14-pin soic 腳位配置指南
TJA1448BT/0Z（14-pin soic 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： TJA1448BT/0Z.
請參閱 資料表 以查看完整腳位配置。
典型應用
TJA1448BT/0Z 適用於 6 應用s: Automotive Body Control Networks, Industrial Automation Gateways, CAN FD Sensor Backbone, Building Automation Equipment, Robotics and Mobile Platforms, Industrial Communication Modules.
Automotive Body Control Networks
The TJA1448BT/0Z fits dual-channel automotive body and comfort networks because it combines two CAN physical-layer channels with a 5 Mbit/s CAN FD capability and an operating range of -40°C to +150°C. Its 3.3 V or 5 V VIO interface can connect directly to compatible automotive controllers, while ESD, undervoltage, and thermal-shutdown protection support harsh electrical environments. The designer should still verify transient immunity, bus fault behavior, and all applicable OEM qualification requirements against the final power architecture.
推薦
Industrial Automation Gateways
A dual-channel TJA1448BT/0Z can connect an industrial gateway or PLC to two separate CAN FD networks while sharing one 14-pin SOIC footprint and 4.5 V to 5.5 V supply. Supporting rates up to 5 Mbit/s provides useful bandwidth for machine-control and sensor networks, while VIO compatibility supports both 3.3 V and 5 V controller logic. Implement 120-ohm termination only where required by the bus topology, and test behavior during bus-off, recessive, dominant, and wake-up conditions.
推薦
CAN FD Sensor Backbone
The TJA1448BT/0Z is suitable for a dual CAN FD sensor backbone because it can carry data at rates up to 5 Mbit/s and includes low-power and wake-up functions for intermittently operating nodes. The two integrated channels can organize one bus for sensors and another for actuators or gateway traffic, reducing component count compared with two separate transceivers. Validate bus-inactive detection, wake-up timing, dominant timeout, and cable-length limitations for each operating mode in the final system.
推薦
Building Automation Equipment
The TJA1448BT/0Z can support building automation controllers that exchange high-speed CAN FD traffic between floor modules, access equipment, and energy-management subsystems. Its dual-channel architecture permits two independent bus connections within one compact SOIC-14 device, and the wide -40°C to +150°C range supports equipment exposed to variable enclosure temperatures. Standby mode can reduce consumption when traffic is absent, but the controller must wake the transceiver correctly for periodic or event-driven communication.
推薦
Robotics and Mobile Platforms
The TJA1448BT/0Z fits robot motor controllers and mobile platforms that need two CAN FD links for separate actuator, sensor, or safety-related networks. Its 5 Mbit/s capability supports responsive control traffic, and VIO operation at 3.3 V or 5 V simplifies connection to different controller families. Keep the CANH and CANL routing symmetrical, maintain the specified decoupling layout, and verify propagation delay and bus timing margins when the platform contains long cables or multiple nodes.
推薦
Industrial Communication Modules
The TJA1448BT/0Z is appropriate for CAN-to-Ethernet, CAN-to-wireless, and data-acquisition modules that require two physical CAN channels. The integrated transceivers support CAN FD rates up to 5 Mbit/s, while Normal and Standby modes provide controllable power states for compact embedded modules. The VIO pin allows direct interfacing with 3.3 V or 5 V microcontrollers. Firmware should coordinate bus-off recovery, wake-up, and dominant-timeout handling so communication recovery does not conflict with module safety requirements.
推薦
推薦產品摘要
工程參考資料，適用於 TJA1448BT/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 | TJA1059 |
|---|---|---|
| Manufacturer | NXP Semiconductors | NXP Semiconductors |
| Package | SOIC-14 | SOIC-14 |
| Number of Channels | 2 | 2 |
主要差異化特點
- Adds low-power system features to a dual CAN FD physical layer (對比TJA1059)
- Combines two CAN FD channels with a 5 Mbit/s capability (對比TJA1059)
- Supports direct 3.3 V or 5 V controller interfacing (對比TJA1059)
- Integrates multiple system protections (對比TJA1059)
設計說明
Use the 14-pin SOIC land pattern and follow the NXP datasheet's recommended component and decoupling placement. Place the supply and ground connections directly on the pins specified for those functions, keep the CANH and CANL traces short and symmetrical, and avoid routing either bus trace beneath or between unrelated high-current switching paths. The 120-ohm termination resistor belongs across CANH and CANL at each bus endpoint rather than at every node.
Design the 4.5 V to 5.5 V main supply with suitable local decoupling and verify startup and shutdown behavior across the complete voltage range. The VIO pin supports 3.3 V or 5 V controller interfacing, but VIO and the main supply are distinct constraints: a valid VIO level does not permit operation outside the 4.5 V to 5.5 V main-supply specification. Confirm controller levels, reset sequencing, and standby control states before releasing the board into production.
Do not treat the TJA1059 replacement statement as permission to substitute every family member or suffix without review. The TJA1448BT/0Z includes Standby, wake-up, dominant-timeout, undervoltage, and thermal-shutdown functions whose exact pin behavior and timing must remain compatible with the existing controller firmware. Confirm the specific replacement ordering code, package footprint, VIO arrangement, bus timing, and protection requirements before approving a drop-in swap.
Maintain a compact CAN bus escape from the transceiver because differential trace geometry affects signal integrity. Route CANH and CANL as a closely coupled pair on the same PCB layer where practical, with continuous reference planes and matched spacing. Keep the termination footprint accessible for configuration, and avoid placing test points or stubs that materially unbalance the pair. Validate the completed routing for reflections and compliance with the selected CAN FD data rate.
合規資訊
The distributor product listing identifies the TJA1448BT/0Z as RoHS compliant. RoHS, REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals status are not independently established beyond that statement.