TJA1052IT - Isolated High-Speed CAN Transceiver SOIC-16 | NXP
MPN： TJA1052IT ✓ 啟用中TJA1052IT 概覽
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.
直接替換替代品，適用於 TJA1052IT — 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。
TJA1052IT/2Y
✅ 直接替換📋 參考替代品（不在目錄中）
TJA1052IT/5Y
✅ 直接替換📋 參考替代品（不在目錄中）
TJA1052IT/5,518
✅ 直接替換📋 參考替代品（不在目錄中）
TJA1052I
✅ 直接替換📋 參考替代品（不在目錄中）
ISO1042DW
✅ 直接替換聯絡詢價
查看資料表 →ISO1042QDWRQ1
✅ 直接替換📋 參考替代品（不在目錄中）
TJA1052IT 規格
| 功能 | Galvanically Isolated High-Speed CAN Transceiver |
| 資料速率 | 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 |
| 工作溫度 | -40 C to +125 C |
| 封裝 / 外殼 | 16-SOIC (SO-16, narrow body) |
| 安裝類型 | Surface Mount |
| Target Application | EV / HEV automotive high-voltage CAN |
| RoHS 狀態 | Compliant |
| AEC-Q100 | Qualified (automotive grade) |
TJA1052IT 腳位配置
| 腳位 1 | VCC — Logic-side supply voltage (3V to 5.25V) |
| 腳位 2 | TXD — CAN transmit data input from MCU |
| 腳位 3 | GND1 — Logic-side ground |
| 腳位 4 | RXD — CAN receive data output to MCU |
| 腳位 5 | NC — Not connected (or reserved) |
| 腳位 6 | NC — Not connected (or reserved) |
| 腳位 7 | NC — Not connected (or reserved) |
| 腳位 8 | NC — Not connected (or reserved) |
| 腳位 9 | VBUS — Bus-side isolated supply voltage |
| 腳位 10 | CANH — CAN high bus line |
| 腳位 11 | CANL — CAN low bus line |
| 腳位 12 | GND2 — Bus-side isolated ground |
| 腳位 13 | NC — Not connected (or reserved) |
| 腳位 14 | NC — Not connected (or reserved) |
| 腳位 15 | NC — Not connected (or reserved) |
| 腳位 16 | STBY — Standby mode control input (active high on TJA1052; NC on ISO1042 drop-in) |
典型應用
TJA1052IT 適用於 6 應用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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 TJA1052IT — 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 | 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) |
主要差異化特點
- Integrated galvanic isolation in single SO-16 package (對比Discrete digital isolator + CAN transceiver pair)
- Pin-compatible drop-in with TI ISO1042 family (對比ISO1042DW (TI))
- AEC-Q100 automotive qualified silicon (對比Industrial-grade ISO1042DW)
設計說明
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.
合規資訊
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.
