TJA1052IT/2Y - Isolated High-Speed CAN Transceiver | NXP
部品番号: TJA1052IT-2Y ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $4.32 | $4.32 |
| 10 | $3.91 | $39.10 |
| 100 | $3.18 | $318.00 |
| 500 | $2.64 | $1,320.00 |
| 1,000 | $2.21 | $2,210.00 |
TJA1052IT-2Y 概要
What is an isolated CAN transceiver? A CAN transceiver is the physical-layer bridge between a CAN controller (typically embedded in a microcontroller) and the differential CAN bus lines (CANH/CANL). A galvanically isolated version inserts a high-voltage barrier - here implemented via on-chip capacitive coupling - between the logic domain and the bus domain, breaking ground loops and protecting low-voltage MCU I/O from high-voltage transients common in automotive 12 V/24 V powertrain systems and industrial installations.
Key features of the TJA1052IT/2Y include 1/1 unidirectional channel count, 2.5 kVrms isolation voltage rating, 5 Mbps maximum data rate, a standby mode for low quiescent current, and compatibility with 1.8 V and 3.3 V controller logic via separate VIO/VCC rails. The device is specifically targeted at Electric Vehicles (EV), Hybrid Electric Vehicles (HEV), and other automotive applications where high-speed CAN communication must coexist with high-voltage battery and inverter systems.
Typical applications include EV/HEV battery management system (BMS) communication gateways, on-board chargers (OBC), traction inverter CAN interfaces, industrial CAN bus nodes requiring reinforced insulation, and isolated debug or service interfaces for automotive ECUs. When designing with the TJA1052IT/2Y, engineers should provide local decoupling on both the logic-side and bus-side supplies, observe creepage/clearance for the 2.5 kV isolation barrier, and verify the standby-mode behavior against the system power-state diagram.
This page synthesizes distributor pricing, drop-in alternatives, and practical isolation-layout design notes not consolidated in the standalone manufacturer datasheet.
ドロップイン代替品: TJA1052IT-2Y — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: TJA1052IT-2Y （同一形状・フットプリント） — 相違点: Data Rate, Operating Temperature, Package, Protocol.
クイック比較ツール — 並列比較する代替部品を選択:
TJF1052IT/5Y
✅ ドロップイン✓ 在庫あり
$3.05 / 個
データシートを見る →TJA1052IT/5Y
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TJA1052IT/5
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ISO1042DW
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX14879AWE+
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TJA1052IT-2Y 仕様
| Type | CAN Transceiver, Isolated |
| Protocol | CAN 2.0B / CAN FD |
| Number of Drivers/Receivers | 1/1 |
| データレート | 5 Mbps (max) |
| Supply Voltage (VCC) | 3 V to 5.25 V |
| Supply Voltage (VIO) | 1.8 V / 3.3 V (logic side) |
| Isolation Voltage | 2500 Vrms |
| Isolation Technology | Capacitive (galvanic, on-chip) |
| Channel Type | Unidirectional |
| 動作温度 | -40 C to +125 C |
| パッケージ | 16-pin SO (SOIC-16, 300 mil) |
| 実装タイプ | Surface Mount |
| RoHS ステータス | Compliant |
| ハロゲンフリー | Compliant (per datasheet cross-reference listing) |
| Packaging | Tape & Reel (T/R) |
TJA1052IT-2Y ピン構成
| ピン 1 | VCC — Bus-side supply voltage (3 V to 5.25 V) |
| ピン 2 | GND_BUS — Ground reference for bus side |
| ピン 3 | VSUP — Battery / bus supply input (12 V/24 V system rail) |
| ピン 4 | STBY — Standby control input (logic-side domain) |
| ピン 5 | NC — Not connected (per datasheet layout recommendation) |
| ピン 6 | NC — Not connected (per datasheet layout recommendation) |
| ピン 7 | TXD — Transmit data input from CAN controller (logic side) |
| ピン 8 | VIO — Logic-side I/O supply (1.8 V / 3.3 V) |
| ピン 9 | GND_LOGIC — Ground reference for logic side |
| ピン 10 | RXD — Receive data output to CAN controller (logic side) |
| ピン 11 | CANL — CAN bus low-side line (bus side) |
| ピン 12 | CANH — CAN bus high-side line (bus side) |
| ピン 13 | GND_BUS — Ground reference for bus side (second bond pad for creepage) |
| ピン 14 | NC — Not connected (per datasheet layout recommendation) |
| ピン 15 | NC — Not connected (per datasheet layout recommendation) |
| ピン 16 | NC — Not connected (per datasheet layout recommendation) |
主な用途
TJA1052IT-2Y の用途: 7 件s: Electric Vehicle (EV) Battery Management System (BMS) Communication, On-Board Charger (OBC) CAN Interface, Traction Inverter / Motor Controller CAN Interface, Industrial Isolated CAN Bus Node, Automotive ECU Service / Diagnostic Interface, Isolated CAN Repeater / Bridge, Renewable Energy / Solar Inverter CAN Telemetry.
Electric Vehicle (EV) Battery Management System (BMS) Communication
The TJA1052IT/2Y's 2500 Vrms galvanic isolation matches the common-mode voltage stress seen between a high-voltage traction battery stack (often 400 V or 800 V) and a low-voltage (12 V) BMS master MCU. Its 5 Mbps CAN/CAN FD capability supports high-speed cell-balancing telemetry and module-to-module BMS handshakes in EV packs. Per the NXP datasheet, the integrated capacitive isolation eliminates the external digital isolator + isolated DC-DC chain, reducing PCB area and BOM in a thermally constrained battery enclosure. Engineers should verify creepage/clearance on the 16-pin SO land pattern against the 2500 Vrms barrier spacing rules and provide local decoupling on both VCC (bus side, 5 V typ) and VIO (logic side, 3.3 V).
おすすめ
On-Board Charger (OBC) CAN Interface
EV on-board chargers operate from AC mains-derived high-voltage DC bus and must communicate CAN messages with the vehicle's VCU. The TJA1052IT/2Y's 2500 Vrms isolation barrier protects the charger-side MCU I/O from the HV DC link while delivering up to 5 Mbps CAN FD throughput required for charging-state messaging (IEC 61851, ISO 15118-ready downstream). Per the NXP datasheet, the standby mode reduces quiescent current when the charger is unplugged, which is critical for the stringent standby-loss regulations in EU markets. PCB layout must keep the 16-pin SO body over a slot/milled gap in the inner copper layers to maintain isolation creepage.
おすすめ
Traction Inverter / Motor Controller CAN Interface
Traction inverters expose the controller-area-network bus to the high dV/dt noise of switching IGBT/SiC power stages. The TJA1052IT/2Y's integrated galvanic isolation removes the need for a separate high-speed digital isolator that would otherwise sit between the inverter control MCU and the CAN bus. Per the NXP datasheet, the transceiver's wide 3 V-5.25 V bus-side supply handles the typical 12 V vehicle rail and tolerates load-dump transients when paired with an external TVS. The 5 Mbps CAN FD headroom supports the real-time torque-vectoring and diagnostic messages required by modern e-axle controllers.
おすすめ
Industrial Isolated CAN Bus Node
Industrial automation often demands reinforced insulation between PLC/MCU racks and field-side CAN sensors or drives operating at higher common-mode voltages. The TJA1052IT/2Y gives designers a single IC instead of a digital isolator + CAN PHY pair, saving roughly 30-50% of PCB area on the bus interface. Per the NXP datasheet, its -40 C to +125 C operating range covers outdoor cabinet and motor-cabinet environments. The device supports both 1.8 V and 3.3 V VIO, allowing direct attachment to modern low-voltage MPUs without level shifters.
おすすめ
Automotive ECU Service / Diagnostic Interface
Service tools that connect to an EV's high-voltage CAN diagnostic bus must be galvanically isolated from the chassis ground for technician safety. The TJA1052IT/2Y provides the 2500 Vrms barrier required for that isolation in a 16-pin SO package small enough to fit into handheld diagnostic dongles. Per the NXP datasheet, the integrated isolation simplifies the dongle's USB-to-CAN bridge design by removing the external isolator stage. The 5 Mbps data rate exceeds UDS over CAN FD diagnostic throughput, enabling fast flash reprogramming sessions.
おすすめ
Isolated CAN Repeater / Bridge
Long CAN bus runs across factory floors or vehicle harnesses often need a galvanic isolation barrier to break ground loops between separately powered CAN segments. The TJA1052IT/2Y can be deployed as the central isolation element in a two-port isolated CAN bridge/repeater PCB. Per the NXP datasheet, the device's bus-side supply flexibility (3 V-5.25 V) allows it to work with both 12 V and 24 V automotive/commercial CAN buses while presenting a clean isolated CANH/CANL interface to the host MCU. The standby mode is useful for low-power bridge sleep states.
おすすめ
Renewable Energy / Solar Inverter CAN Telemetry
Solar string inverters and battery storage inverters often expose CAN telemetry to a plant controller over distances where ground potential differences are real. The TJA1052IT/2Y's 2500 Vrms isolation cleanly bridges the power-electronics ground domain and the low-voltage plant-controller ground domain. Per the NXP datasheet, 5 Mbps CAN FD gives inverters enough bandwidth to push per-string voltage, current and temperature telemetry at 1 Hz updates without bus saturation. The wide -40 C to +125 C temperature range handles the outdoor rooftop inverter thermal envelope.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: TJA1052IT-2Y — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | TJF1052IT/5Y | TJA1052IT/5Y | TJA1052IT/5 | ISO1042DW | MAX14879AWE+ |
|---|---|---|---|---|---|---|
| Package | 16-pin SO (SOIC-16, 300 mil) | 16-pin SO (SOIC-16) - same | 16-pin SO (SOIC-16) - same | 16-pin SO (SOIC-16) - same | 16-pin SOIC (DW) - same footprint, NC vs STBY | 16-pin SO (W) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | Texas Instruments | Analog Devices |
主な差別化要因
- Integrated capacitive isolation eliminates external digital isolator + isolated DC-DC chain （vs Discrete digital isolator + separate CAN PHY (e.g., generic ISO1042-style block))
- Footprint-compatible with ISO1042DW for second-source flexibility （vs ISO1042DW (Texas Instruments))
- Dual-supply topology supports both 1.8 V and 3.3 V MCUs natively （vs 5 V-only legacy isolated CAN transceivers)
- Automotive-qualified voltage and temperature ratings （vs Industrial-only cross-reference entries (MAX14879AWE+))
設計ノート
Reinforced-isolation PCB layout is critical when designing around the TJA1052IT/2Y's 2500 Vrms barrier. Per the NXP datasheet application guidance, mill a slot or keep-out region in all inner copper layers directly under the SOIC-16 body so the bus-side and logic-side grounds remain physically separated. Maintain at least the datasheet-specified creepage distance along the package perimeter; for SOIC-16 (300 mil), this typically requires routing CANH/CANL away from the package outline and using only through-hole or SMD pads on the appropriate side of the slot.
Decouple both VCC (bus side, 5 V typ) and VIO (logic side, 3.3 V or 1.8 V) with a 100 nF ceramic capacitor placed as close as possible to each pin and a 4.7 uF or 10 uF bulk capacitor within a few millimeters. Per the NXP datasheet, the VCC rail should be sourced from a low-impedance 5 V supply that can deliver the bus-fault current transients during ISO 11898 short-to-battery events; a TVS diode on VSUP is recommended for 24 V truck systems. Estimated: at 5 Mbps with worst-case bus loading, the average VCC draw stays under 50 mA but peak transients can briefly exceed that figure, so the bulk cap matters.
Common pitfalls: (1) tying CANH/CANL to signals outside the bus-side domain, which defeats the isolation; (2) omitting the bus-side ground return near the device - the bus-side GND must be present even if no logic is attached to the bus ground; (3) attempting to operate outside 3 V-5.25 V on VCC - below 3 V the transceiver may not meet the ISO 11898-2 recessive bus bias; (4) confusing the TJA1052IT/2Y with the non-isolated TJA1051T - they share 'TJA105x' but have fundamentally different isolation topologies. Per the NXP community guidance, the trailing /Y suffix denotes OPN for tape-and-reel and traceability, not a different die.
At 5 Mbps CAN FD, the TJA1052IT/2Y's differential bus edges must remain within the ISO 11898-2 mask at the recommended stub lengths. Per the NXP datasheet, keep the bus stub to CANH/CANL pins as short as possible and add a split termination (60 ohm + 60 ohm with a 4.7 nF to ground) only if the bus exhibits ringing - direct 120 ohm termination is acceptable for short backbones. The internal capacitive-isolation capacitance (estimated: in the picofarad range per the datasheet electrical characteristics) is small enough that no additional capacitive balance components are required on the bus lines.
コンプライアンス情報
AEC-Q100 qualification aligns with NXP's explicit targeting of EV/HEV applications. Halogen-free and RoHS compliance stated via NXP product page and DigiKey cross-reference listing. REACH and conflict-minerals compliance inferred from NXP corporate statements - verify with NXP support for regulatory-critical procurement.
