TJA1052IT - Isolated High-Speed CAN Transceiver SOIC-16 | NXP
MPN: TJA1052IT ✓ فعالTJA1052IT نمای کلی
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.
جایگزین‌های drop-in برای TJA1052IT — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
TJA1052IT/2Y
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
TJA1052IT/5Y
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
TJA1052IT/5,518
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
TJA1052I
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
ISO1042DW
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ISO1042QDWRQ1
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
TJA1052IT مشخصات
| عملکرد | Galvanically Isolated High-Speed CAN Transceiver |
| نرخ داده | 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 |
| دمای کاری | -40 C to +125 C |
| بسته‌بندی / کیس | 16-SOIC (SO-16, narrow body) |
| نوع نصب | Surface Mount |
| Target Application | EV / HEV automotive high-voltage CAN |
| وضعیت RoHS | Compliant |
| AEC-Q100 | Qualified (automotive grade) |
پیکربندی پین TJA1052IT
| پین 1 | VCC — Logic-side supply voltage (3V to 5.25V) |
| پین 2 | TXD — CAN transmit data input from MCU |
| پین 3 | GND1 — Logic-side ground |
| پین 4 | RXD — CAN receive data output to MCU |
| پین 5 | NC — Not connected (or reserved) |
| پین 6 | NC — Not connected (or reserved) |
| پین 7 | NC — Not connected (or reserved) |
| پین 8 | NC — Not connected (or reserved) |
| پین 9 | VBUS — Bus-side isolated supply voltage |
| پین 10 | CANH — CAN high bus line |
| پین 11 | CANL — CAN low bus line |
| پین 12 | GND2 — Bus-side isolated ground |
| پین 13 | NC — Not connected (or reserved) |
| پین 14 | NC — Not connected (or reserved) |
| پین 15 | NC — Not connected (or reserved) |
| پین 16 | STBY — Standby mode control input (active high on TJA1052; NC on ISO1042 drop-in) |
کاربردهای معمول
TJA1052IT مناسب است برای 6 کاربردs: 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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای TJA1052IT — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | 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) |
تفاوت‌های کلیدی
- Integrated galvanic isolation in single SO-16 package (در مقابلDiscrete digital isolator + CAN transceiver pair)
- Pin-compatible drop-in with TI ISO1042 family (در مقابلISO1042DW (TI))
- AEC-Q100 automotive qualified silicon (در مقابلIndustrial-grade ISO1042DW)
یادداشت‌های طراحی
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.
اطلاعات انطباق
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.
