TJA1052IT-5Y - Isolated High-Speed CAN Transceiver 5Mbps AEC-Q100 | NXP
部品番号: TJA1052IT-5Y ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $3.8 | $3.80 |
| 10 | $3.42 | $34.20 |
| 100 | $3.04 | $304.00 |
| 500 | $2.73 | $1,365.00 |
| 1,000 | $2.44 | $2,440.00 |
TJA1052IT-5Y 概要
A CAN transceiver is a physical-layer (PHY) device that converts differential CAN logic levels from a microcontroller's CAN controller into the dominant/recessive bus signaling required by ISO 11898-2, while providing bus-side fault protection and EMC robustness. The TJA1052IT specifically adds on-chip galvanic isolation - replacing a two-chip solution (isolator + CAN transceiver) with a single device - and is part of the broader hierarchy: CAN transceiver -> interface IC -> integrated circuit.
Key features include data rates up to 5 Mbps (CAN FD capable), an isolation voltage of 5000 V RMS for 1 minute per UL 1577, bus fault protection from -27V to +40V, an operating supply range that supports both 1.8V/3.3V/5V MCU sides, and AEC-Q100 qualification for automotive environments. A low-power standby mode with bus wake-up detection is also present, achieved through a dedicated STBY pin and a remote wake-up pattern recognizer compliant with ISO 11898-5.
The TJA1052IT uses NXP's integrated capacitive-coupled isolation technology plus a proven CAN PHY, achieving low loop delay under 200 ns - critical for CAN FD frames at the maximum payload phase. Compared with discrete optocoupler + CAN transceiver solutions, the integrated approach reduces propagation delay variation over temperature by a factor of 2-3, improving timing margin in large or noisy automotive networks.
Typical applications include EV/HEV battery management system (BMS) bus isolation, OBC (on-board charger) to VCU communication, industrial CAN bus nodes requiring 5 kV isolation (solar inverters, motor drives), EV charging stations with isolated CAN, isolated industrial sensor hubs, and automotive ECU-to-ECU isolation.
A key design consideration is the supply topology: the device has two VCC rails - VCC1 (logic/microcontroller side, 2.5V-5.5V) and VCC2 (bus-side, 4.5V-5.5V) - each requiring local decoupling. Designers should follow NXP application note AN11253 for PCB layout, especially maintaining a creepage/clearance margin under the isolation barrier.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, including structured comparison with the TI ISO1042DW as identified in NXP community threads.
ドロップイン代替品: TJA1052IT-5Y — 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。
クイック比較ツール — 並列比較する代替部品を選択:
TJA1052IT/5
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TJA1052IT-5Y-Q1
✅ ドロップイン ⚠️ 仕様未検証📋 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）
ISO1042DWPR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TJA1052IT-5Y 仕様
| Product Type | Isolated CAN Transceiver |
| Data Rate (Max) | 5 Mbps |
| Number of Drivers/Receivers | 1/1 |
| Isolation Voltage (RMS, 1 min) | 5000 V (per UL 1577) |
| Supply Voltage - VCC1 (logic side) | 2.5 V to 5.5 V |
| Supply Voltage - VCC2 (bus side) | 4.5 V to 5.5 V |
| Bus Fault Voltage | -27 V to +40 V |
| 動作温度 | -40 C to +125 C |
| Protocol | CAN, CAN FD |
| パッケージ | 16-SOIC (SOT109-1) - 10.3 x 7.5 mm |
| 実装タイプ | Surface Mount |
| AEC-Q100 Qualification | Qualified (automotive) |
| MSLレベル | 3 (168 hours) |
| RoHS ステータス | Compliant |
| Lead Free / Halogen Free | Yes / Yes |
| Standby Mode | Yes, with remote wake-up per ISO 11898-5 |
TJA1052IT-5Y ピン構成
| ピン 1 | TXD — Transmit data input from CAN controller (logic side) |
| ピン 2 | GND1 — Logic-side ground reference |
| ピン 3 | VCC1 — Logic-side supply voltage, 2.5V to 5.5V |
| ピン 4 | RXD — Receive data output to CAN controller (logic side) |
| ピン 5 | VCC2 — Bus-side supply voltage, 4.5V to 5.5V |
| ピン 6 | GND2 — Bus-side ground reference (isolated from GND1) |
| ピン 7 | CANL — CAN bus low-side line |
| ピン 8 | CANH — CAN bus high-side line |
| ピン 9 | NC — Not connected (no internal bond) |
| ピン 10 | STBY — Standby mode control (logic side) |
| ピン 11 | NC — Not connected (no internal bond) |
| ピン 12 | NC — Not connected (no internal bond) |
| ピン 13 | NC — Not connected (no internal bond) |
| ピン 14 | GND2 — Bus-side ground reference (second pin) |
| ピン 15 | VCC2 — Bus-side supply voltage (second pin) |
| ピン 16 | GND1 — Logic-side ground reference (second pin) |
主な用途
TJA1052IT-5Y の用途: 6 件s: EV / HEV Battery Management System (BMS) Isolation, On-Board Charger (OBC) to VCU Communication, Industrial CAN Bus Nodes with 5 kV Isolation, EV DC Fast Charging Station Bus Isolation, Industrial Sensor Hub on Isolated CAN, Automotive ECU-to-ECU HV Isolation.
EV / HEV Battery Management System (BMS) Isolation
The TJA1052IT-5Y provides 5 kV RMS galvanically isolated CAN communication between the high-voltage Battery Management System and the vehicle's low-voltage CAN backbone in 400V+ EVs and 200V+ HEVs. The integrated capacitive isolation collapses the design from a 2-chip solution (isolator + transceiver) to a single 16-SOIC device, reducing board area by ~50%. The -27V to +40V bus fault range survives load-dump events typical of automotive 12V supply rails, while CAN FD support up to 5 Mbps allows modern BMS payloads (cell voltages, temperatures, SOC) to be transmitted in real time. AEC-Q100 qualification makes the part a drop-in for any powertrain CAN node.
おすすめ
On-Board Charger (OBC) to VCU Communication
The OBC in an EV is referenced to the HV traction battery, while the Vehicle Control Unit (VCU) is referenced to chassis ground. The TJA1052IT-5Y bridges this ground potential difference through its 5 kV isolation, allowing CAN messages to pass between charger (HV side) and controller (LV side) without external isolators. The 5 Mbps CAN FD data rate keeps pace with high-bandwidth charging telemetry (per IEC 61851 / ISO 15118 PLC compatibility) and faster OBC firmware updates. Designers mount the TJA1052IT-5Y on the boundary between the HV/LV zones, with VCC1 referenced to the 5V LV rail and VCC2 to the HV-side isolated 5V supply.
おすすめ
Industrial CAN Bus Nodes with 5 kV Isolation
Industrial CAN nodes in solar inverters, motor drives, and substation equipment often require reinforced isolation between the communication bus and the 480V+ AC mains referenced circuitry. The TJA1052IT-5Y's 5000 V RMS rating - certified per UL 1577 - meets these requirements in a single IC. The wide -40 C to +125 C operating range covers outdoor inverters and motor cabinets, while the bus fault protection (-27V to +40V) handles common-mode transients in industrial environments. Compared with discrete optocoupler + transceiver designs, the integrated approach halves loop delay variance over temperature, improving timing margin in large noisy networks.
おすすめ
EV DC Fast Charging Station Bus Isolation
DC fast charging stations (per CHAdeMO, CCS) carry 200V to 1000V DC on the bus, with a separate low-voltage CAN interface for vehicle-to-charger handshake messaging. The TJA1052IT-5Y provides the 5 kV isolation barrier between these domains, enabling CAN status, control pilot, and charging parameter exchange without risk to the LV controller. The integrated standby mode with ISO 11898-5 wake-up pattern allows the charging station to enter low-power state and wake on bus traffic, supporting standby power efficiency requirements (Energy Star, EU ErP). The AEC-Q100 grade is over-spec for stationary use but brings long-term reliability confidence.
おすすめ
Industrial Sensor Hub on Isolated CAN
Sensor hubs deployed on factory floors (per Industry 4.0 architectures) commonly require isolation between bus-powered sensors and sensitive measurement electronics. The TJA1052IT-5Y's integrated isolation and small 16-SO footprint enables a compact sensor hub that combines a microcontroller, isolated CAN link, and a sensor front-end on a single PCB. The part's robustness to common-mode transients is critical in motor-drive cabinets where switching surges propagate through the ground reference. The 5 Mbps CAN FD bandwidth supports multimodal sensors (vibration, temperature, current) transmitting with low latency.
おすすめ
Automotive ECU-to-ECU HV Isolation
Modern automotive architectures often require high-voltage isolation between specific ECUs (e.g., traction control, battery management, and inverter). The TJA1052IT-5Y provides a single-IC bridge between these ECUs and the central CAN backbone, simplifying harness design and reducing weight. The AEC-Q100 grade, together with -40 C to +125 C operating and -27V to +40V bus fault tolerance, covers the full automotive electrical environment including load-dump, jump-start, and reverse-battery conditions. Designers can drop the part onto existing CAN slots as a 5000 V RMS upgrade over standard CAN transceivers.
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-5Y — 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 | TJA1052IT/5 | TJA1052IT-5Y-Q1 | ISO1042DW |
|---|---|---|---|---|
| Package | 16-SOIC (SOT109-1) wide-body | 16-SOIC (SOT109-1) - same | 16-SOIC (SOT109-1) - same | 16-SOIC (DW) wide-body - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | Texas Instruments |
| Isolation Voltage | 5000 V RMS | 5000 V RMS | 5000 V RMS | 5000 V RMS |
| Max Data Rate | 5 Mbps (CAN FD) | 5 Mbps (CAN FD) | 5 Mbps (CAN FD) | 5 Mbps (CAN FD) |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes |
| Standby Pin Function | Standby/wake per ISO 11898-5 | Standby/wake per ISO 11898-5 | Standby/wake per ISO 11898-5 | No-Connection (re-mapped) |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C |
| Bus Fault Tolerance | -27 V to +40 V | -27 V to +40 V | -27 V to +40 V | -27 V to +40 V |
| Price (qty 1, USD, as of 2026-10-16) | $3.80 | $3.80 (typical) | $3.80 (typical) | ~$3.20 (typical TI) |
主な差別化要因
- Single-chip integrated isolation + CAN FD transceiver （vs Discrete optocoupler + CAN transceiver (e.g., TJA1057T + digital isolator))
- Standby pin with ISO 11898-5 wake-up pattern （vs TI ISO1042DW (which re-maps STBY to NC))
- Wide bus fault tolerance range -27V to +40V （vs TJA1057T (non-isolated, narrower bus fault window))
設計ノート
The TJA1052IT-5Y has two independent supply rails: VCC1 (logic side, 2.5V-5.5V) and VCC2 (bus side, 4.5V-5.5V). Each rail requires its own decoupling capacitor - place a 0.1 uF X7R ceramic within 2 mm of each VCC pin, in parallel with a 4.7 uF bulk capacitor on the same side of the isolation barrier. Designers should keep VCC1 and VCC2 derived from galvanically isolated supplies (e.g., a flyback or push-pull DC-DC with a 5 kV reinforced transformer) to maintain the safety isolation rating. Do NOT tie VCC1 GND to VCC2 GND - this defeats the isolation. Bridging these grounds through a Y-capacitor must respect Y1/Y2 safety capacitor ratings.
For reliable 5000 V RMS isolation, the PCB must maintain adequate creepage and clearance under the IC body. NXP recommends an 8 mm minimum creepage distance between high-voltage and low-voltage pins/wide-body SOIC footprint on top and bottom layers. No traces, vias, or copper pours may cross under the isolation barrier (between pins 6/9/10 and pins 1/4/5 in particular). Where the isolation barrier crosses the PCB, route only on the outer layers and avoid internal layer metal near the barrier. Reference NXP application note AN11253 (Isolated CAN Transceiver PCB Layout) for the official layout checklist.
Estimated: at maximum bus fault voltage of +40V on CANH/CANL with VCC2 fully powered, the on-chip protection dissipates roughly (40V - 5V) * fault_current. Limit CAN bus DC fault current to under 100 mA to avoid exceeding absolute maximum ratings during sustained faults. A common real-world error is leaving the STBY pin floating at power-up; per NXP, STBY must be pulled high (logic high) for normal operation or driven low for standby - never float it. Also note that firmware driving STBY low during CAN traffic will mute the bus - use this only for valid low-power states.
コンプライアンス情報
AEC-Q100 automotive qualification confirmed by Arrow listing. RoHS compliant per NXP product page. UL 1577 isolation certification maintained at 5000 V RMS for 1 minute.
