TCAN3404-Q1 - Automotive 3.3V CAN FD Transceiver | Texas Instruments
MPN: TCAN3404-Q1 ✓ Hoạt độngTCAN3404-Q1 Tóm tắt
A CAN FD transceiver, also called a CAN physical-layer (PHY) device, is the interface between a digital CAN controller (or microcontroller with integrated CAN MAC) and the differential CAN bus wires. It converts the controller's transmit (TXD) and receive (RXD) single-ended logic signals into differential bus voltages (CANH, CANL), and provides bus arbitration, fault protection, and ESD handling for the harsh automotive electrical environment. The TCAN3404-Q1 belongs to the broader category hierarchy of: CAN transceiver → CAN interface IC → serial interface IC → wired connectivity IC → interface & connectivity semiconductor. The 3.3V (rather than 5V) supply rail reduces power loss in modern automotive MCU domains.
Key features include ±58V bus fault tolerance (industry-leading for the 8-pin TSOT-23 form factor), ±25V common-mode range on CANH/CANL, 8 kV HBM ESD protection on bus pins, low-loop delay to support 8 Mbps CAN FD frames, and ultra-low-power shutdown current. Internal pull-down resistors on STB and SHDN default the device to safe operating states if pins are left floating. The TSOT-23-8 package measures 2.9 mm × 1.6 mm and is well suited for space-constrained body electronics and zonal ECU modules.
Architecturally, the TCAN3404-Q1 uses a single 3.3V supply rail, eliminating the need for an external charge pump or 5V regulator that legacy 5V CAN transceivers sometimes require. The transmitter and receiver share a common-mode reference and slope-control circuitry, allowing fast bit transitions while minimizing EMI on unshielded twisted-pair automotive harnesses. The device is designed for robust coexistence on mixed 3.3V/5V CAN networks, with a recessive bias that minimizes error frames during arbitration.
Typical applications include automotive body control modules, gateway ECUs, ADAS sensor CAN-FD links, battery management system (BMS) communication buses, and infotainment CAN backbones. It is also used in industrial CAN-FD nodes and heavy-truck J1939 networks where ±58V load-dump survival is required. The shutdown mode is particularly useful in battery-powered systems that need to enter sleep states with the bus still biased.
Designers should pair the TCAN3404-Q1 with a 3.3V CAN-capable MCU (such as TI's TMS570 or C2000 families) and provide a common-mode choke plus split termination on the bus to maximize radiated-emissions margin. Care must be taken not to leave SHDN floating in mission-critical designs; tying it to logic high enables ultra-low-power mode when the ECU shuts down.
This page aggregates distributor stock, verified drop-in replacement MPNs (including the closely-related TCAN3403-Q1 and TCAN3413-Q1), and engineering design notes that supplement the manufacturer datasheet with PCB-layout, ESD, and mixed-voltage coexistence guidance.
Bộ thay thế dễ dàng lắp đặt cho TCAN3404-Q1 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với TCAN3404-Q1 (cùng hình factor và footprint).
TCAN3403-Q1
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →TCAN3413-Q1
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TCAN3304-Q1
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TCAN1044-Q1
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
TCAN3404-Q1 Thông số kỹ thuật
| Product Type | CAN FD Transceiver |
| Điện áp cung cấp | 3 V to 3.6 V |
| Data Rate (Max) | 8 Mbps (CAN FD) |
| Standard | ISO 11898-2:2016 |
| Bus Fault Protection | ±58 V |
| Common-Mode Range | ±25 V |
| ESD Protection (Bus Pins, HBM) | ±8 kV |
| Nhiệt độ hoạt động | -40C to +125C |
| Low-Power Modes | Standby (STB) + Shutdown (SHDN) |
| Điện áp tắt | Ultra-low (per datasheet) |
| Hộp | TSOT-23-8 (DDF) |
| Package Dimensions | 2.9 mm × 1.6 mm |
| Kiểu lắp đặt | Surface Mount |
| AEC-Q100 | Qualified (Automotive) |
| Trạng thái RoHS | Compliant |
| Số lượng chân | 8 |
| TXD/RXD Logic Levels | 3.3 V CMOS |
| Propagation Delay | Low-loop delay (CAN FD compatible) |
Cấu hình chân TCAN3404-Q1
| Chân 1 | VCC — 3.3V supply input |
| Chân 2 | GND — Ground |
| Chân 3 | TXD — Transmit data input from controller (logic-level) |
| Chân 4 | RXD — Receive data output to controller (logic-level) |
| Chân 5 | SHDN — Shutdown mode control (active-high; internal pull-down) |
| Chân 6 | CANL — CAN bus low (differential) |
| Chân 7 | CANH — CAN bus high (differential) |
| Chân 8 | STB — Standby mode control (active-high; internal pull-down) |
Ứng dụng tiêu biểu
TCAN3404-Q1 phù hợp cho 6 Áp dụngs: Automotive Body Control Modules (BCM), Automotive Gateway ECU, ADAS Sensor CAN-FD Links, Battery Management System (BMS) Communication, Heavy-Truck and Industrial CAN-FD Networks (J1939), Infotainment CAN-FD Backbone.
Automotive Body Control Modules (BCM)
The TCAN3404-Q1's 3.3V supply and ±58V bus-fault tolerance make it ideal for body control modules that aggregate CAN FD traffic from door zones, lighting, and climate subsystems. Its AEC-Q100 qualification satisfies automotive OEM validation programs, while the TSOT-23-8 (DDF) footprint saves PCB area versus larger SO-8 CAN transceivers. Placed between the MCU's CAN-FD controller and the twisted-pair harness, the device gates the bus to ultra-low-power shutdown when the BCM sleeps, draining minimal quiescent current on the battery. CAN FD 8 Mbps support enables firmware update over CAN (UDS on CAN-FD) at high throughput, shortening garage reprogramming time.
Được đề xuất
Automotive Gateway ECU
In zonal or central gateways, the TCAN3404-Q1 serves as a sub-bus transceiver on 3.3V CAN-FD local lines that connect sensors and actuators to a gateway processor. The ultra-low-power shutdown current (SHDN pin-driven) lets unused channels enter sleep when traffic migrates to other busses, helping meet the always-on quiescent-current budgets of modern zonal architectures. ±58V fault tolerance and ±8 kV HBM ESD on bus pins obviate heavy TVS protection, reducing BOM cost. Pin-to-pin compatibility with the TCAN3403-Q1 allows gateway designers to choose between standby-only and standby+shutdown modes without respinning the PCB.
Được đề xuất
ADAS Sensor CAN-FD Links
Advanced driver-assistance systems (ADAS) such as radar, lidar, and surround-view modules use CAN FD as a backbone for sensor data and configuration. The TCAN3404-Q1's low-loop-delay and 8 Mbps CAN-FD capability meet the timing margin required for time-sensitive ADAS messages, while its 3.3V I/O matches modern sensor MCUs without level shifters. ±58V bus pin protection prevents inductive transients from nearby motors or solenoids from damaging the transceiver. The compact TSOT-23-8 (DDF) package fits into space-constrained sensor housings and AEC-Q100 Grade 1 supports the -40C to +125C operating range required under hood and behind bumpers.
Được đề xuất
Battery Management System (BMS) Communication
Battery Management Systems for EVs and stationary storage often run a CAN-FD bus inside the pack to communicate module voltages and temperatures to the main BMS controller. The TCAN3404-Q1's ultra-low shutdown current (driven by SHDN) preserves pack-level quiescent current when the entire system is powered down, while its 3.3V supply matches modern BMS MCUs. The ±58V bus-pin tolerance absorbs voltage spikes from the high-current contactor circuits typical in EV battery packs. AEC-Q100 qualification (Grade 1) ensures reliability at -40C to +125C ambient temperatures encountered near power-electronics assemblies.
Được đề xuất
Heavy-Truck and Industrial CAN-FD Networks (J1939)
Heavy-duty trucks, buses, and off-highway equipment using SAE J1939 (which runs on top of CAN, increasingly with CAN-FD) benefit from the TCAN3404-Q1's ±58V bus pin standoff, well above the 24V truck battery transients. The TSOT-23-8 (DDF) footprint is the same as the TCAN3403-Q1 and TCAN3304-Q1, giving designers flexibility to upgrade legacy classical-CAN nodes to CAN-FD without board respins. AEC-Q100 qualification and ±8 kV HBM ESD protect against the harsh vibration and electrical-noise environments in heavy machinery cabs and chassis. The SHDN pin enables low-sleep-current modes for equipment that parks for months between uses.
Được đề xuất
Infotainment CAN-FD Backbone
Infotainment head units, instrument clusters, and telematics modules exchange audio routing, display configuration, and cloud-telematics data over a CAN-FD backbone, where the TCAN3404-Q1 provides the physical-layer interface to a 3.3V MCU. The low-loop-delay transmission-line characteristics at 8 Mbps keep the bit-timing budget intact for high-throughput firmware updates between ECUs. ±58V bus fault protection guards the bus pins from alternator load-dump events in 12V/24V systems. The ultra-small TSOT-23-8 package supports tight BOMs in cost-sensitive infotainment designs while still providing AEC-Q100 reliability.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho TCAN3404-Q1 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | TCAN3403-Q1 | TCAN3413-Q1 | TCAN3304-Q1 | TCAN1044-Q1 |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments (same family) | Texas Instruments (newer family) | Texas Instruments (classical CAN) | Texas Instruments (5V CAN) |
| Package | TSOT-23-8 (DDF) | TSOT-23-8 (DDF) - same | TSOT-23-8 (DDF) - same | TSOT-23-8 (DDF) - same | TSOT-23-8 (DDF) - same |
| Supply Voltage | 3.0V to 3.6V (3.3V) | 3.0V to 3.6V (same) | 3.0V to 3.6V (same) | 3.0V to 3.6V (same) | 4.5V to 5.5V (5V) |
| CAN-FD Support | Yes (up to 8 Mbps) | Yes (up to 8 Mbps) | Yes (up to 8 Mbps) | No (classical CAN, 1 Mbps) | Yes (up to 5 Mbps) |
| SHDN Pin | Yes (pin 5) | No | Yes (pin 5) | No | No (standby only) |
| Bus Fault Tolerance | ±58V | ±58V | ±58V | ±58V | ±58V |
| AEC-Q100 | Qualified | Qualified | Qualified | Qualified | Qualified |
| ESD (Bus Pins, HBM) | ±8 kV | ±8 kV | ±8 kV (improved) | ±8 kV | ±8 kV |
Bảo phân biệt quan trọng
- Extra SHDN pin for ultra-low-power shutdown (vsTCAN3403-Q1)
- CAN FD 8 Mbps (vsTCAN3304-Q1)
- 3.3V single-supply operation (vsTCAN1044-Q1)
Ghi chú thiết kế
Place 100 nF decoupling capacitor as close as possible to VCC (pin 1) of the TSOT-23-8 package; add a 10-100 uF bulk cap on the same 3.3V rail within 1 cm. Route CANH and CANL as a 100-120 Ω characteristic-impedance differential pair, keeping symmetry and avoiding sharp 90° bends. Place split termination (60 Ω plus 4.7 nF at each end) about 5 mm from the connector to attenuate common-mode noise.
Estimated: at 8 Mbps CAN FD with bus length 20 m, the bit time is 125 ns; the TCAN3404-Q1's propagation delay is referenced in the TI datasheet as well within the bit-timing budget. For mixed 3.3V/5V CAN networks, add a 4.7 nF X7R bypass at each node to filter common-mode noise and ensure recessive-bias alignment (per TI application note SLLA636).
Do not leave SHDN (pin 5) floating in mission-critical designs even though an internal pull-down exists - noisy environments may toggle the pin. Drive SHDN explicitly from an MCU GPIO for shutdown sequencing, and verify logic polarity (active-high) against the latest datasheet revision. Connecting a 5V bus transceivers' CANH/CANL to a system with TCAN3404-Q1 is supported but requires recessive-bias testing on a real network.
Thông tin tuân thủ
AEC-Q100 qualified per TI datasheet (automotive -Q1 suffix). RoHS compliant per TI product page; halogen-free and conflict-mineral declarations not in the verified snippet - mark unknown.
