TJA1044GTJ - 5Mbps CAN Transceiver, 8-SOIC | NXP
MPN： TJA1044GTJ ✓ 啟用中TJA1044GTJ 概覽
A CAN transceiver is the physical-layer interface within a Controller Area Network system. The protocol controller creates and interprets CAN frames, while the transceiver converts those digital signals into differential bus levels and converts received bus levels back into controller-compatible logic. CAN transceivers therefore belong to the hierarchy of interface IC, communications transceiver, CAN interface, and semiconductor.
Verified device data identifies the TJA1044GTJ as a one-driver, one-receiver, half-duplex 5 Mbps CAN interface with standby mode. Its 8-SOIC package supports automated surface-mount assembly, while the 300 mV receiver hysteresis provides noise margin around the receiver switching threshold. The 4.75 V to 5.25 V supply range permits use with conventional regulated 5 V digital systems.
The TJA1044 belongs to NXP's Mantis high-speed CAN transceiver family and targets automotive networking. Its CANH and CANL bus-side interface must operate with the protection, termination, routing, and common-mode strategy required by the target vehicle network. Standby mode provides a means to reduce participation when the node does not require normal bus operation, but the system designer must confirm all wake-up behavior from the complete manufacturer documentation.
Typical uses include body-control modules, automotive comfort systems, powertrain-adjacent controllers, gateway nodes, and industrial CAN equipment connected to 5 V logic. A CAN controller, crystal or clock source, decoupling network, bus termination, and connector are normally placed around the transceiver according to the reference design and system requirements.
Design care should focus on bus-layout symmetry, short ground returns, correct split termination, compliant common-mode protection, and validation of standby-state timing. The CAN wires should not be routed as ordinary unprotected low-speed signals because fast edges and faults can exceed expectations outside the transceiver operating envelope.
This page consolidates verified manufacturer and distributor information, separates known TJA1044GTJ characteristics from missing data, and evaluates candidate replacements conservatively. It is intended to add sourcing context and design guidance without presenting unsupported electrical limits or unverified cross-brand pin compatibility as fact.
直接替換替代品，適用於 TJA1044GTJ — 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： TJA1044GTJ （相同外形與佔位） — 差異在於 Package, Protocol, Mounting Type, Product Type, AEC-Q100 Qualification.
TJA1044GT/3Z
✅ 直接替換📋 參考替代品（不在目錄中）
TJA1044GTJ 規格
| Product Type | High-speed CAN transceiver with standby mode |
| Protocol | CANbus |
| Number of Drivers | 1 driver |
| Number of Receivers | 1 receiver |
| Duplex | Half-duplex |
| Maximum Data Rate | 5 Mbps |
| Receiver Hysteresis | 300 mV |
| Supply Voltage Range | 4.75 V to 5.25 V |
| 封裝 | 8-SOIC, 0.154 inch width and 3.90 mm width dimensions |
| 安裝類型 | SMD surface mount |
| Packaging | Tape and reel |
| Standard Package Quantity | 2500 units |
| Automotive Application | High-speed automotive CAN |
| Product Family | Mantis high-speed CAN transceiver family |
| Standby Control Interface | Standby mode control; logic details not provided in verified search data |
TJA1044GTJ 2500 units 腳位配置指南
TJA1044GTJ（2500 units 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： TJA1044GTJ.
請參閱 資料表 以查看完整腳位配置。
典型應用
TJA1044GTJ 適用於 6 應用s: Automotive Body Control Module, Vehicle CAN Gateway, Powertrain-Adjacent Controller, Industrial CAN Sensor Hub, CAN Diagnostics Interface, Low-Power CAN Network Node.
Automotive Body Control Module
The TJA1044GTJ fits a 5 V body-control node that exchanges CAN frames with comfort, lighting, locking, or seat systems. Its verified 5 Mbps capability exceeds the rate required by many body networks, while the 4.75 V to 5.25 V supply range aligns with regulated 5 V controller rails. The 8-SOIC package keeps the physical layer compact and assembly-friendly. Place the transceiver beside the CAN controller and connector, use short symmetric CANH and CANL routes, and follow the NXP reference layout. Standby mode can reduce participation during selected low-power states, but control polarity and timing must be verified in the full datasheet.
推薦
Vehicle CAN Gateway
TJA1044GTJ can provide the physical-layer interface for a gateway linking two CAN segments while a higher-level controller performs routing and diagnostics. The verified one-driver, one-receiver half-duplex configuration suits standard CAN node implementation, and the 5 Mbps maximum rate provides margin for demanding automotive traffic. Keep the transceiver close to the connector, preserve symmetric routing between CANH and CANL, and provide split termination as required by the network architecture. Because a gateway commonly sees faults and ground-potential differences on external buses, protection and isolation decisions must be validated separately rather than inferred from the basic 5 V interface specifications.
推薦
Powertrain-Adjacent Controller
The TJA1044GTJ may suit a powertrain-adjacent controller that needs a high-speed CAN connection to sensors, actuators, or another electronic control unit. Its verified 4.75 V to 5.25 V operating range, 5 Mbps maximum data rate, and standby mode support compact 5 V embedded nodes. However, the supplied material does not confirm transient immunity, operating-temperature limits, or automotive qualification grade. Those omissions are critical for harsh vehicle environments, so engineers must obtain the complete NXP documents and validate protection, grounding, and thermal requirements before deployment.
推薦
Industrial CAN Sensor Hub
TJA1044GTJ can serve as the CAN physical layer in a 5 V industrial sensor hub when its verified environmental limits match the installation. The half-duplex, one-driver and one-receiver arrangement supports standard CAN communication, while 5 Mbps headroom can accommodate demanding diagnostic or control traffic. The 8-SOIC package is practical for compact controller boards. Use a regulated 5 V supply, place decoupling near the transceiver, maintain a short return path, and route the differential bus away from switching nodes. Extended-temperature status, surge protection, isolation, and cable-length behavior remain unverified in the supplied data.
推薦
CAN Diagnostics Interface
TJA1044GTJ is appropriate for a compact diagnostic interface that exposes a CAN controller to an external vehicle or equipment bus. The verified 300 mV receiver hysteresis supplies switching margin, and the transceiver can operate up to 5 Mbps for high-rate diagnostic traffic. Its standby mode may help the host controller avoid unnecessary bus activity when the node is not active. Designers should confirm the standby-control polarity, bus-fault behavior, and electrical limits from the full NXP datasheet. Firmware must also handle CAN error counters, bus-off recovery, and safe defaults rather than assuming all CAN transceivers have identical wake-up behavior.
推薦
Low-Power CAN Network Node
TJA1044GTJ suits a low-power network node that occasionally communicates through a CAN bus and can enter standby between activities. The verified standby-mode feature provides the interface state needed for such power management, while the 5 V supply range and compact SOIC-8 package support embedded boards. Actual energy savings cannot be quantified because standby current and timing were not included in the supplied data. Validate those values, including sleep entry and recovery behavior, before calculating battery life. The controller should avoid bus transmissions during transitions and ensure the hardware state cannot violate system safety requirements.
推薦
推薦產品摘要
工程參考資料，適用於 TJA1044GTJ — 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 | TJA1044GT/3Z |
|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors |
| Package | 8-SOIC | 8-SOIC |
| Product Type | High-speed CAN transceiver with standby mode | TJA1044-family high-speed CAN transceiver; exact standby features require datasheet confirmation |
| Standby Control | Standby mode | Exact standby-control behavior requires datasheet confirmation |
主要差異化特點
- Verified 5 Mbps CAN capability (對比TJA1044GT/3Z)
- Explicit 300 mV receiver hysteresis (對比TJA1044GT/3Z)
- Known 5 V supply operating window (對比TJA1044GT/3Z)
- Compact 8-SOIC tape-and-reel form (對比TJA1044GT/3Z)
設計說明
Follow the official NXP PCB layout guidance rather than treating CANH and CANL as independent single-ended routes. Place the transceiver close to the CAN connector, minimize stub lengths, keep the pair's geometry and surrounding ground reference as symmetrical as practical, and avoid crossings with high-current or switching paths. Verify each pin function and exposed connection in the package drawing before release because the supplied search excerpts do not contain the complete pin table.
The transceiver operates from 4.75 V to 5.25 V, so the design must prevent rail excursions outside that verified interval. Place the required local bypass capacitor at the supply pins with a short ground return, and account for supply-network impedance during simultaneous switching and transmit activity. Standby-current and transmit-current magnitudes were not supplied, so regulator sizing should use current values from the complete datasheet rather than an estimate.
Do not infer replacement compatibility from matching the 8-SOIC outline alone. TJA1044-family suffixes can differ in standby, wake-up, ordering, or qualification details, and the supplied comparison material does not quantify every difference. For an existing PCB, compare pin names, control polarity, bus timing, supply limits, receiver thresholds, loopback behavior, thermal limits, and automotive documentation before approving TJA1044GT/3Z or any other substitute.
CAN signal integrity depends on the entire node implementation, including connector, protection components, termination, stubs, and return paths. Use split termination where appropriate to the network topology, avoid placing test points that create unnecessary branches, and keep the protected bus-side traces away from clocks, inductors, and power-conversion switching loops. Validate radiated and conducted emissions in the final enclosure because the transceiver datasheet alone cannot establish system compliance.
合規資訊
The verified sources identify automotive high-speed CAN use but do not explicitly provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations for TJA1044GTJ.
