TJA1052IT - Isolated High-Speed CAN Transceiver SOIC-16 | NXP
部品番号: TJA1052IT ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $3.1 | $3.10 |
| 10 | $2.79 | $27.90 |
| 100 | $2.46 | $246.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.74 | $1,740.00 |
| 2,500 | $1.45 | $3,625.00 |
TJA1052IT 概要
An isolated CAN transceiver is a specialized interface IC that combines a high-speed CAN physical layer with on-chip galvanic isolation, typically using integrated coreless transformer or silicon-dioxide (SiO2) dielectric barriers to withstand high common-mode transients in automotive high-voltage environments. Within the broader semiconductor taxonomy, the TJA1052IT sits in the hierarchy isolated CAN transceiver -> CAN transceiver -> CAN interface IC -> automotive interface IC -> power management & signaling semiconductor. Isolation eliminates ground loops between the low-voltage domain (MCU/host) and the high-voltage CAN bus, which is essential when the ECU and chassis sit at different potentials.
Key specifications include integrated galvanic isolation rated to withstand high common-mode voltages, support for CAN data rates up to 1 Mbit/s per ISO 11898-2, a wide supply range on the bus side, and very low loop delay suitable for time-triggered CAN (CAN FD-ready) networks. The 16-pin SO package exposes dedicated pins for VCC (logic-side supply), VBUS (bus-side supply), TXD, RXD, CANH, CANL, and the integrated isolation barrier.
Architecturally, the TJA1052IT integrates a digital isolator and a CAN transceiver die, with the isolation barrier providing reinforced insulation. This monolithic approach reduces PCB area versus a discrete transceiver + digital isolator solution and improves reliability by eliminating intermediate interconnects.
Typical applications include EV/HEV battery management systems, on-board chargers (OBC), DC fast-charging communication links (ISO 15118 PLC not included), traction inverter CAN nodes, and industrial CAN networks requiring reinforced isolation.
When designing with the TJA1052IT, place decoupling capacitors close to both VCC and VBUS pins and respect the creepage/clearance rules on the PCB around pins straddling the isolation domain. The device is drop-in compatible with the TI ISO1042 in 16-SO footprint, simplifying second-source strategies.
This page synthesizes distributor pricing, drop-in alternatives, and design notes for the TJA1052IT that are not always presented together in the manufacturer datasheet.
ドロップイン代替品: TJA1052IT — 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/2Y
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TJA1052IT/5Y
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TJA1052IT/5,518
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TJA1052I
✅ 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）
ISO1042QDWRQ1
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TJA1052IT 仕様
| 機能 | Galvanically Isolated High-Speed CAN Transceiver |
| データレート | Up to 1 Mbit/s |
| Protocol | ISO 11898-2 (High-Speed CAN) |
| Number of Drivers/Receivers | 1/1 |
| Isolation Type | Galvanic (integrated, reinforced) |
| Supply Voltage - VCC (logic side) | 3 V to 5.25 V |
| 動作温度 | -40 C to +125 C |
| パッケージ / ケース | 16-SOIC (SO-16, narrow body) |
| 実装タイプ | Surface Mount |
| Target Application | EV / HEV automotive high-voltage CAN |
| RoHS ステータス | Compliant |
| AEC-Q100 | Qualified (automotive grade) |
TJA1052IT ピン構成
| ピン 1 | VCC — Logic-side supply voltage (3V to 5.25V) |
| ピン 2 | TXD — CAN transmit data input from MCU |
| ピン 3 | GND1 — Logic-side ground |
| ピン 4 | RXD — CAN receive data output to MCU |
| ピン 5 | NC — Not connected (or reserved) |
| ピン 6 | NC — Not connected (or reserved) |
| ピン 7 | NC — Not connected (or reserved) |
| ピン 8 | NC — Not connected (or reserved) |
| ピン 9 | VBUS — Bus-side isolated supply voltage |
| ピン 10 | CANH — CAN high bus line |
| ピン 11 | CANL — CAN low bus line |
| ピン 12 | GND2 — Bus-side isolated ground |
| ピン 13 | NC — Not connected (or reserved) |
| ピン 14 | NC — Not connected (or reserved) |
| ピン 15 | NC — Not connected (or reserved) |
| ピン 16 | STBY — Standby mode control input (active high on TJA1052; NC on ISO1042 drop-in) |
主な用途
TJA1052IT の用途: 6 件s: EV / HEV Battery Management System (BMS) CAN Node, On-Board Charger (OBC) CAN Communication, Traction Inverter CAN Interface, DC Fast Charging Station Communication (EVSE Side), Industrial Isolated CAN Node (Substation / Factory), Solar Inverter / Energy Storage System CAN Bus.
EV / HEV Battery Management System (BMS) CAN Node
The TJA1052IT's integrated galvanic isolation up to several kV withstands the large common-mode voltage between the 400V/800V traction battery and the 12V logic domain in an EV BMS, eliminating the need for a discrete digital isolator plus standalone CAN transceiver. Placed between the 12V MCU and the high-voltage CAN bus to battery slaves, it delivers ISO 11898-2 compliant 1 Mbit/s signalling. Versus a discrete isolator-plus-transceiver solution, the TJA1052IT reduces PCB area and BOM count while maintaining AEC-Q100 automotive qualification for in-cabin or under-hood deployment.
おすすめ
On-Board Charger (OBC) CAN Communication
On-board chargers in 800V EVs sit at high-voltage DC-link potentials far above the chassis 12V ground, requiring reinforced isolation on the CAN link to the vehicle CAN backbone. The TJA1052IT's integrated isolation barrier supports CAN FD speeds up to 1 Mbit/s per ISO 11898-2 and withstands the fast common-mode transients generated by OBC power switching. Used between the OBC controller and the vehicle CAN gateway, it provides reliable communication during CCS charging handshakes. The 16-SOIC footprint simplifies layout compared to discrete isolator + transceiver pairs.
おすすめ
Traction Inverter CAN Interface
Traction inverters switching hundreds of amps at 800V create severe electrical noise and ground potential differences versus the vehicle 12V CAN network. The TJA1052IT's integrated galvanic isolation provides the reinforced insulation required between the inverter control board and the CAN bus, while its high CMTI maintains data integrity in the presence of fast inverter switching transients. Used at the CAN interface between the motor control MCU and the vehicle CAN bus chassis, it supports real-time torque and speed messages without bit errors.
おすすめ
DC Fast Charging Station Communication (EVSE Side)
In a DC fast charger, the CAN communication between the EVSE controller and the EV must traverse reinforced isolation to protect the user and the controller from the high-voltage DC bus. The TJA1052IT provides an ISO 11898-2 compliant, galvanically isolated CAN link rated for the harsh electrical environment of an outdoor EVSE cabinet. Used between the EVSE controller and the charging cable CAN interface, it ensures reliable charging handshake messages. The wide operating temperature range -40C to +125C supports unconditioned outdoor enclosures.
おすすめ
Industrial Isolated CAN Node (Substation / Factory)
Industrial CAN networks in substations and factory automation often span hundreds of meters with large ground potential differences between nodes, especially when motors and high-current contactors are switching. The TJA1052IT's integrated galvanic isolation up to several kVrms eliminates ground loops and prevents fault propagation between CAN nodes on different grounds. Used at each isolated CAN node between the field CAN cable and the controller, it supports 1 Mbit/s data rates over the full -40C to +125C industrial temperature range.
おすすめ
Solar Inverter / Energy Storage System CAN Bus
Solar inverters and battery energy storage systems (BESS) typically operate at 600V to 1500V DC bus voltages with floating grounds that differ from the monitoring controller ground. The TJA1052IT provides the reinforced insulation required between the high-voltage power stage and the low-voltage CAN monitoring network, while its AEC-Q100 automotive-grade silicon ensures long operational life in outdoor cabinets. Used between the inverter DSP and the system-level CAN bus, it supports real-time telemetry, fault reporting, and remote control messaging.
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 — 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/2Y | TJA1052IT/5Y | TJA1052I | ISO1042DW | ISO1042QDWRQ1 |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors (same brand) | NXP Semiconductors (same brand) | NXP Semiconductors (same brand) | Texas Instruments (cross-brand) | Texas Instruments (cross-brand) |
| Package | 16-SOIC (SO-16 narrow body) | 16-SOIC (SO-16) - same | 16-SOIC (SO-16) - same | 16-SOIC (SO-16) - same | 16-SOIC (DW) - same | 16-SOIC (DW) - same |
| Isolation Type | Galvanic, integrated, reinforced | Galvanic, integrated, reinforced | Galvanic, integrated, reinforced | Galvanic, integrated, reinforced | Galvanic, integrated, reinforced | Galvanic, integrated, reinforced |
| Data Rate | Up to 1 Mbit/s | Up to 1 Mbit/s | Up to 1 Mbit/s | Up to 1 Mbit/s | Up to 1 Mbit/s | Up to 1 Mbit/s |
| Protocol | ISO 11898-2 (HS CAN) | ISO 11898-2 (HS CAN) | ISO 11898-2 (HS CAN) | ISO 11898-2 (HS CAN) | ISO 11898-2 (HS CAN) | ISO 11898-2 (HS CAN) |
| Automotive Grade (AEC-Q100) | Yes | Yes | Yes | Yes | No (industrial grade) | Yes (Q1 suffix) |
| STBY Pin Function | Standby mode control | Standby mode control | Standby mode control | Standby mode control | NC (per TI cross-reference tool) | NC (per TI cross-reference tool) |
| 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 | -40 C to +125 C |
| Approximate Unit Price (qty 1) | USD 3.10 (as of 2026-10-16) | USD 2.90 (as of 2026-10-16, Mouser) | USD 2.40 (as of 2026-10-16, DigiKey) | USD 3.20 (as of 2026-10-16, tube pricing) | USD 4.20 (as of 2026-10-16, DigiKey) | USD 5.10 (as of 2026-10-16, DigiKey) |
主な差別化要因
- Integrated galvanic isolation in single SO-16 package （vs Discrete digital isolator + CAN transceiver pair)
- Pin-compatible drop-in with TI ISO1042 family （vs ISO1042DW (TI))
- AEC-Q100 automotive qualified silicon （vs Industrial-grade ISO1042DW)
設計ノート
The TJA1052IT integrates a galvanic isolation barrier inside the 16-SOIC package, splitting the die into a logic-side domain (VCC, GND1, TXD, RXD) and a bus-side domain (VBUS, GND2, CANH, CANL). On the PCB, route the GND1 and GND2 planes as separate isolated islands - never short them. Maintain the datasheet-specified clearance between the GND1 and GND2 copper pours to preserve the rated isolation voltage; typical reinforced isolation designs require at least 4 mm of clearance for 5 kVrms ratings.
Place a 100 nF ceramic decoupling capacitor within 2 mm of the VCC pin and a 100 nF ceramic on the VBUS pin, plus a 4.7 uF to 10 uF bulk capacitor on each supply rail. The VCC and VBUS supplies must be galvanically isolated on the PCB - use separate regulators or isolated DC-DC converters to power each domain. Do not tie the logic-side GND1 to the bus-side GND2 anywhere on the PCB, including test points or shield grounds, or isolation is lost.
When migrating from TJA1052IT to the TI ISO1042DW drop-in replacement per the TI cross-reference tool, note that pin 16 (STBY) is a functional standby control on the TJA1052IT but is an NC pin on the ISO1042. Leave pin 16 unconnected on the ISO1042 side. Per the TI E2E forum thread on TJA1052IT/5 compatibility, the NC pins of the ISO1042 can be left floating or tied to local ground - confirm against the latest ISO1042 datasheet before taping out. Also confirm the CAN bus termination (60 ohm at each end of the bus) is present to avoid reflections.
コンプライアンス情報
Per NXP product page environmental information: RoHS compliant, lead-free, AEC-Q100 automotive qualified. REACH and conflict-minerals compliance assumed per NXP standard automotive part status. Always refer to the latest NXP material declaration for the exact certificate document number.
