TCAN1044DRQ1 - 8Mbps CAN FD Transceiver, 8-SOIC | Texas Instruments
MPN： TCAN1044DRQ1 ✓ 啟用中TCAN1044DRQ1 概覽
A CAN transceiver is a physical-layer interface IC that bridges a digital CAN protocol controller (typically embedded in a microcontroller) to a differential two-wire CAN bus. The transceiver translates the controller's single-ended TXD/RXD logic signals to the bus's dominant/recessive differential signaling required by ISO 11898-2, while providing bus-side ESD protection, common-mode range, and dominant-time-out fault protection. The TCAN1044-Q1 family sits in the CAN interface IC -> interface IC -> integrated circuit hierarchy and is a foundational building block for in-vehicle networks (IVN).
Key features include 8 Mbps CAN FD data-rate support for next-generation vehicle networks, IEC 61000-4-2 ESD protection on bus pins, low-loop delay for propagation-tight networks, and a low-power standby mode with a remote-wake-up wake request via the bus (per the TCAN1044 family datasheet). The device operates from a single 4.5 V to 5.5 V VCC supply, draws typically 50 mA in normal mode, and integrates thermal shutdown plus bus-dominant time-out to prevent network lockup.
The TCAN1044DRQ1 architecture uses a high-speed differential driver and a wide-common-mode receiver that exceeds the -2 V to +7 V common-mode range required by ISO 11898-2:2016. Internal level shifting on TXD/RXD allows direct connection to 3.3 V or 5 V microcontrollers without external logic-level translators, and the integrated bus fault protection tolerates -58 V to +58 V transients common in automotive 12 V/24 V systems.
Typical applications include automotive body and chassis CAN nodes (BCM, gateway modules), CAN FD powertrain networks, industrial CAN-bus field-bus nodes, and electric-vehicle battery management system (BMS) master/slave communication. The AEC-Q100 Grade 1 qualification makes it appropriate for under-hood and safety-critical vehicle ECUs.
When designing with this part, observe the 60 ohm bus termination requirement of ISO 11898-2 and place a 100 nF VCC decoupling capacitor within 2 mm of the supply pin. Avoid routing the CANH/CANL differential pair over splits in reference planes, and use a 120 ohm characteristic-impedance cable/trace geometry.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical PCB design notes for the TCAN1044DRQ1 - information not consolidated in the manufacturer datasheet alone.
直接替換替代品，適用於 TCAN1044DRQ1 — 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： TCAN1044DRQ1 （相同外形與佔位） — 差異在於 Package, Protocol, Operating Temperature, Mounting Type, Maximum Data Rate.
TCAN1044AVDRQ1
✅ 直接替換📋 參考替代品（不在目錄中）
TCAN1044VDRQ1
✅ 直接替換📋 參考替代品（不在目錄中）
TCAN1044DRBRQ1
✅ 直接替換📋 參考替代品（不在目錄中）
TJA1044GTJ
✅ 直接替換聯絡詢價
查看資料表 →TCAN1044DRQ1 規格
| Protocol | CAN, CAN FD |
| Number of Drivers/Receivers | 1/1 |
| Data Rate (max) | 8 Mbps |
| Supply Voltage (VCC) | 4.5 V to 5.5 V |
| Bus Fault Voltage | -58 V to +58 V |
| Common-Mode Range | -2 V to +7 V (per ISO 11898-2:2016) |
| 工作溫度 | -40 C to +125 C |
| 封裝 | 8-pin SOIC (DRB) |
| 安裝類型 | Surface Mount |
| AEC-Q100 Qualification | Yes (Grade 1) |
| ESD Protection (bus pins) | IEC 61000-4-2 compliant |
| Standby Mode | Yes (low-power, bus wake-up) |
| RoHS 狀態 | Compliant |
| Lead-Free | Yes |
| MSL 等級 | 1 (per JEDEC J-STD-020) |
TCAN1044DRQ1 腳位配置
| 腳位 1 | TXD — Transmit data input from CAN controller (logic level referenced to VCC) |
| 腳位 2 | GND — Ground reference |
| 腳位 3 | VCC — 5 V supply input (4.5 V to 5.5 V) |
| 腳位 4 | RXD — Receive data output to CAN controller |
| 腳位 5 | nSTBY — Standby mode control input (active low) |
| 腳位 6 | CANL — CAN low-side bus line (differential) |
| 腳位 7 | CANH — CAN high-side bus line (differential) |
| 腳位 8 | VBAT — Battery/unregulated supply for bus-side drivers |
典型應用
TCAN1044DRQ1 適用於 6 應用s: Automotive Body and Chassis CAN Nodes, Electric Vehicle Battery Management System (BMS) Communication, Industrial CANopen and DeviceNet Field Nodes, Automotive Powertrain and ADAS Sensor Networks, Heavy-Duty Truck and Off-Highway CAN Networks, Medical Imaging and Diagnostic Equipment CAN Bus.
Automotive Body and Chassis CAN Nodes
The TCAN1044DRQ1's 8 Mbps CAN FD support and AEC-Q100 Grade 1 qualification make it a strong fit for body control modules (BCM), gateway ECUs, and chassis domain controllers that aggregate sensors and actuators. In a BCM, the transceiver sits between the vehicle's CAN-H/CAN-L twisted pair and the MCU's CAN controller, translating single-ended TXD/RXD logic into the ISO 11898-2:2016 differential signaling. The -58 V to +58 V bus fault tolerance is essential for surviving load-dump and jump-start transients on 12 V automotive buses. The 8 Mbps CAN FD data-rate headroom also enables richer diagnostic payloads over existing wiring without re-routing the bus.
推薦
Electric Vehicle Battery Management System (BMS) Communication
In an EV BMS, the TCAN1044DRQ1 enables CAN FD communication between the master BMS controller and slave battery modules over an isolated CAN bus. The 8 Mbps data rate shortens battery-cell telemetry cycles, improving state-of-charge (SoC) and state-of-health (SoH) estimation accuracy. The wide -2 V to +7 V common-mode range tolerates ground-offset shifts across isolated domains, while IEC 61000-4-2 ESD protection on the bus pins protects against service-tool discharge during pack assembly and field service. The standby/wake-up functionality also allows low quiescent draw during parking, supporting the BMS sleep-current budget.
推薦
Industrial CANopen and DeviceNet Field Nodes
The TCAN1044DRQ1 fits industrial field-bus nodes such as CANopen DS301 slaves and DeviceNet group-2 nodes used in factory automation, PLC I/O racks, and variable-frequency drives. Its -40 C to +125 C operating range covers the extended industrial temperature profile, and its AEC-Q100 pre-screening provides extra margin for vibration and thermal-cycling-heavy environments. The 8 Mbps CAN FD capability also positions designs to migrate to CANopen FD profiles without changing the physical transceiver. Compared to older TJA1050/TJA1051 designs, the TCAN1044DRQ1 provides higher ESD robustness and tighter loop delay for time-deterministic PDO scheduling.
推薦
Automotive Powertrain and ADAS Sensor Networks
The TCAN1044DRQ1 supports powertrain ECUs and ADAS sensor fusion nodes where CAN FD bandwidth is needed for radar, lidar, and camera data sharing over the vehicle backbone. Placing the TCAN1044DRQ1 at each sensor ECU ensures ISO 11898-2:2016 physical-layer compliance for deterministic low-latency delivery to the central ADAS domain controller. The 4.5 V to 5.5 V VCC range enables direct connection to the 5 V rail commonly used in automotive sensor supplies. The AEC-Q100 Grade 1 stress testing also satisfies OEM PPAP requirements for safety-critical sensor modules.
推薦
Heavy-Duty Truck and Off-Highway CAN Networks
For 24 V truck, bus, and construction-equipment CAN networks, the TCAN1044DRQ1's -58 V to +58 V bus fault tolerance is critical for surviving double-battery jump-start events and load-dump pulses specific to commercial-vehicle electrical systems. Its 8 Mbps CAN FD capability also enables faster diagnostic handshakes between off-highway controllers (e.g. cab/body controllers on agricultural machinery). The 8-pin SOIC package and wide operating temperature support the vibration and thermal extremes typical of under-chassis and engine-bay installations.
推薦
Medical Imaging and Diagnostic Equipment CAN Bus
Although primarily automotive-targeted, the TCAN1044DRQ1 is also used in medical imaging carts (MRI, ultrasound, patient monitors) where CAN-based internal communication links sub-assemblies. The 8 Mbps CAN FD bandwidth supports real-time transfer of imaging subsystem telemetry, while the IEC 61000-4-2 ESD protection guards against electrostatic discharge in clinical environments. The low loop delay of the TCAN1044 family is advantageous for synchronizing real-time image acquisition across distributed processing nodes. The robust -40 C to +125 C range also supports equipment used in varied clinical and field-hospital environments.
推薦
推薦產品摘要
工程參考資料，適用於 TCAN1044DRQ1 — 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 | TCAN1044AVDRQ1 | TCAN1044VDRQ1 | TCAN1044DRBRQ1 | TJA1044GTJ |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | NXP Semiconductors |
| Package | 8-SOIC (DRB) | 8-SOIC (DRB) - same | 8-SOIC (DRB) - same | 8-SON (DRB) - smaller | 8-SOIC - same |
| Data Rate (max) | 8 Mbps | 8 Mbps | 8 Mbps | 8 Mbps | 8 Mbps |
| VIO Logic-Level Translator | No (single VCC reference) | No | Yes (separate VIO pin) | No | No |
| Bus Fault Tolerance | -58 V to +58 V | -58 V to +58 V (fault-protected) | -58 V to +58 V | -58 V to +58 V | -27 V to +40 V (typical) |
| AEC-Q100 Grade | Grade 1 | Grade 1 | Grade 1 | Grade 1 | Grade 1 |
| Standby Mode | Yes (nSTBY pin) | Yes | Yes | Yes | Yes |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C |
主要差異化特點
- Higher bus-fault tolerance than the typical cross-brand alternative (對比TJA1044GTJ)
- Logic-level translation upgrade available in the same SOIC-8 footprint (對比TJA1044GTJ)
- Fault-protected variant available for extreme automotive environments (對比TCAN1044DRBRQ1)
設計說明
Place a 100 nF X7R ceramic decoupling capacitor within 2 mm of the VCC pin (pin 3) and a second 4.7 uF bulk capacitor on the VBAT pin (pin 8) to suppress automotive load-dump transients. Route the CANH/CANL pair as a 120 ohm differential microstrip on the top layer over an unbroken ground plane, keeping total length under 30 cm on the PCB to minimize reflection. Place a split-terminator (60 ohm + 30 pF + 60 ohm) or a single 120 ohm resistor at each end of the bus segment per ISO 11898-2:2016.
Keep the CANH/CANL traces symmetric, with matched length and width, and avoid routing them near switching nodes or clock lines to prevent common-mode noise injection. Provide a guard ground trace between the CAN bus and any high-voltage or noisy signals (e.g. MOSFET gate drives). The exposed copper pad under the SOIC-8 should be soldered to a thermal relief pad tied to GND to improve thermal dissipation during bus fault events.
Do not leave the nSTBY pin floating - tie it to VCC through a 10 kohm pull-up if standby mode is unused, otherwise the part may enter an undefined state at power-up and fail to transmit. Avoid connecting the TCAN1044DRQ1 to a 3.3 V-only CAN controller without verifying the VIL/VIH thresholds; if the MCU is at 3.3 V, use the TCAN1044VDRQ1 with VIO = 3.3 V instead. Do not exceed -58 V or +58 V on CANH/CANL - add external TVS diodes (e.g. SMBJ33CA) for harsh 24 V truck environments.
Estimated: For a 1 Mbps CAN-FD network with 20 nodes over a 40 m bus, the loop delay budget per node is approximately 250 ns - the TCAN1044DRQ1's typical loop delay of around 100 ns leaves headroom for cable propagation. At 8 Mbps CAN-FD, the loop delay must stay below 100 ns per node; verify with the datasheet's propagation-delay curves rather than relying on the typical value alone.
合規資訊
AEC-Q100 Grade 1 qualified per TI product page. RoHS and lead-free per TI packaging materials declaration. ISO 11898-2:2016 physical-layer compliant per datasheet.
