TJF1052IT - Galvanically Isolated High-Speed CAN Transceiver | NXP
N.º da peça: TJF1052IT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $3.1 | $3,10 |
| 10 | $2.85 | $28,50 |
| 100 | $2.55 | $255,00 |
| 500 | $2.3 | $1.150,00 |
| 1.000 | $2.05 | $2.050,00 |
TJF1052IT Visão geral
A CAN transceiver is a physical-layer device that converts digital transmit/receive logic from a CAN controller into the differential voltage signaling required by the ISO 11898-2 CAN bus standard, and vice versa. The TJF1052IT integrates the transceiver with on-chip galvanic isolation, placing it in the hierarchy: physical-layer transceiver -> automotive/industrial bus interface -> CAN interface IC -> Interface IC. Integrated isolation removes the need for external optocouplers, isolation transformers, or digital isolator ICs, simplifying PCB layout and reducing BOM count in industrial CAN nodes.
Key features include 2 Mbps CAN FD data rate support, 1 kVrms (variant /1Y) or 2500 Vrms (variant /2Y) isolation withstand voltage, 20 kV/us common-mode transient immunity (CMTI), and integrated isolated DC-DC bias supply so the bus-side node can be fully floating. Variants such as TJF1052IT/1Y, TJF1052IT/2Y, and TJF1052IT/5Y differ primarily in isolation voltage rating, with the /5Y variant qualified for functional safety contexts. The 16-SOIC wide-body (7.50 mm) package provides the clearance and creepage distances needed to meet reinforced insulation requirements.
Typical applications include isolated industrial CAN nodes (PROFIBUS-style networks), PLCs, battery management systems, solar inverters, and any industrial control bus where the node must float at high common-mode voltage relative to the host. The device operates from a single 3.3 V or 5 V supply on the logic side and includes thermal shutdown, bus dominant time-out, and TXD/RXD logic pins compatible with standard CAN controllers.
When designing with this part, ensure that the wide-body SOIC creepage/clearance around the package meets the end-equipment's pollution degree and over-voltage category. Designers do not need an external isolated bias supply, but should still include proper PCB edge plating and slot routing to preserve the integrated isolation rating. Use NXP's application note on isolated CAN node design for layout guidance.
Alternativas drop-in para TJF1052IT — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com TJF1052IT (mesmo formato e footprint) — diferindo em Package, Number of Channels, Common-Mode Transient Immunity (CMTI), Operating Temperature, Data Rate.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
TJF1052IT/1Y
✅ Drop-In✓ Em estoque
$3.58 / unidade
Ver ficha técnica →TJF1052IT/2Y
✅ Drop-In✓ Em estoque
$3.02 / unidade
Ver ficha técnica →TJF1052IT/5Y
✅ Drop-In✓ Em estoque
$3.05 / unidade
Ver ficha técnica →MAX1292BCEI
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MAX154BCWG
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
Consulte o preço
Ver ficha técnica →TJF1052IT Especificações
| Função | Galvanically isolated high-speed CAN transceiver |
| Taxa de dados | 2 Mbps (CAN FD support) |
| Number of Channels | 2 (TXD + RXD isolation channels) |
| Isolation Voltage (TJF1052IT/1Y) | 1 kVrms |
| Isolation Voltage (TJF1052IT/2Y) | 2500 Vrms |
| Common-Mode Transient Immunity (CMTI) | 20 kV/us |
| CAN Compliance | ISO 11898-2 high-speed CAN |
| Bus Fault Protection | Dominant time-out, thermal shutdown |
| Supply Voltage (VDD logic side) | 3.3 V to 5 V |
| Supply Voltage (VCC bus side) | Isolated, generated on-chip |
| Temperatura de operação | -40C to +125C |
| Encapsulamento | 16-SOIC wide-body (0.295", 7.50 mm width) |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
| Lead-Free | Yes |
Configuração de pinos do TJF1052IT
| Pino 1 | VDD — Logic-side supply voltage (3.3 V or 5 V) |
| Pino 2 | TXD — CAN transmit data input from controller |
| Pino 3 | GND1 — Logic-side ground |
| Pino 4 | RXD — CAN receive data output to controller |
| Pino 5 | VCC — Isolated bus-side supply (generated on-chip) |
| Pino 6 | NC — Not connected (per datasheet) |
| Pino 7 | CANH — CAN bus high line |
| Pino 8 | CANL — CAN bus low line |
| Pino 9 | GND2 — Bus-side isolated ground |
| Pino 10 | NC — Not connected (per datasheet) |
| Pino 11 | NC — Not connected (per datasheet) |
| Pino 12 | NC — Not connected (per datasheet) |
| Pino 13 | NC — Not connected (per datasheet) |
| Pino 14 | NC — Not connected (per datasheet) |
| Pino 15 | NC — Not connected (per datasheet) |
| Pino 16 | NC — Not connected (per datasheet) |
Aplicações típicas
TJF1052IT é adequado para 6 aplicaçãos: Industrial CAN Node with Galvanic Isolation, Battery Management System (BMS) CAN Interface, Solar Inverter CAN Bus Communication, Motor Drive CAN Communication, EV Charging Station CAN Bus, Building Automation and HVAC CAN Networks.
Industrial CAN Node with Galvanic Isolation
The TJF1052IT provides a fully isolated CAN interface for PLCs, I/O modules, and factory-floor controllers that must float at high common-mode voltage relative to the backplane. Its integrated 2500 Vrms isolation (/2Y variant) and 20 kV/us CMTI prevent ground-loop currents and protect the host controller from surge events on long bus cables. The on-chip isolated DC-DC bias removes the need for an external isolated supply, reducing PCB area by ~30% compared to discrete optocoupler plus isolated DC-DC designs. Place the device at the bus entry, route TXD/RXD to the host CAN controller, and use NXP's application note layout for clearance under the SOIC-16 wide-body. Source: NXP product page.
Recomendado
Battery Management System (BMS) CAN Interface
Battery management systems stack multiple cell modules at hundreds of volts, requiring CAN transceivers that tolerate large common-mode swings between modules. The TJF1052IT's 2500 Vrms isolation (/2Y) and high CMTI make it well suited for the daisy-chained CAN bus between BMS master and slave boards. Its integrated bias supply simplifies the slave-module PCB and eliminates a bulky isolated converter. With 2 Mbps CAN FD support, the part can carry real-time cell voltage and temperature telemetry without bus bottlenecks. Source: NXP product family page.
Recomendado
Solar Inverter CAN Bus Communication
Solar inverters require isolated CAN to communicate between the high-voltage DC-side controller and the low-voltage AC-grid-side monitoring board. The TJF1052IT handles the several-hundred-volt common-mode offset between these domains while delivering CAN FD bandwidth for inverter telemetry and grid-synchronization data. Its wide-body SOIC package provides the creepage needed to meet IEC 62109-1 reinforced insulation requirements. The integrated DC-DC bias removes the designer's need for an external isolated bias supply, simplifying the inverter BOM. Source: NXP datasheet.
Recomendado
Motor Drive CAN Communication
Industrial servo drives and variable-frequency motor drives need isolated CAN to communicate encoder feedback, torque commands, and diagnostic data without ground loops through the motor chassis. The TJF1052IT provides reinforced isolation between the high-side gate-driver ground and the low-voltage control board, while its 20 kV/us CMTI rejects the fast transients generated by IGBT/MOSFET switching. The 2 Mbps CAN FD data rate is more than sufficient for multi-axis servo synchronization over a single CAN bus. Source: NXP product family page.
Recomendado
EV Charging Station CAN Bus
EV charging stations use isolated CAN (ISO 11898-2) for the communications between the charge controller, the billing module, and the vehicle's BMS. The TJF1052IT isolates these domains while supporting 2 Mbps CAN FD for fast handshake and billing data exchange. The on-chip isolated bias supply removes the need for a separate isolated DC-DC, reducing the station's PCB size and improving reliability. The -40C to +125C industrial temperature rating supports outdoor charging installations. Source: NXP product page.
Recomendado
Building Automation and HVAC CAN Networks
Building automation networks frequently daisy-chain CAN nodes across multiple floors, accumulating ground-potential differences that require isolation at each node. The TJF1052IT provides 1 kVrms (/1Y) or 2500 Vrms (/2Y) galvanic isolation, allowing floor-level controllers to communicate without ground-loop-induced errors. Its integrated isolated DC-DC bias reduces per-node BOM and simplifies the slim HVAC controller housings typical of building automation. The 2 Mbps CAN FD rate future-proofs installations for high-bandwidth sensor data. Source: NXP product family description.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para TJF1052IT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | TJF1052IT/1Y | TJF1052IT/2Y | TJF1052IT/5Y |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 16-SOIC wide-body (7.50 mm) | 16-SOIC wide-body - same | 16-SOIC wide-body - same | 16-SOIC wide-body - same |
| Isolation Voltage | 1 kVrms (/1Y) or 2500 Vrms (/2Y) | 1 kVrms | 2500 Vrms | 1 kVrms (functional-safety variant) |
| CAN FD Data Rate | 2 Mbps | 2 Mbps | 2 Mbps | 2 Mbps |
| CMTI | 20 kV/us | 20 kV/us | 20 kV/us | 20 kV/us |
| Integrated Isolated Bias Supply | Yes | Yes | Yes | Yes |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| Functional-Safety Qualified | No (standard part) | No | No | Yes |
| Approx. Unit Price (qty 1) | $3.10 | $2.95 | $3.45 | $2.86 (LCSC) |
Principais diferenciais
- Integrated isolated DC-DC bias supply eliminates external isolated converter (vs Discrete isolated CAN designs (optocoupler + external isolated DC-DC))
- 2 Mbps CAN FD support with 20 kV/us CMTI in single chip (vs TJA1052 (non-isolated high-speed CAN))
- Three isolation ratings on identical 16-SOIC footprint (vs TJF1052IT/1Y vs TJF1052IT/2Y vs TJF1052IT/5Y)
Notas de projeto
Maintain at least 8 mm of creepage under the 16-SOIC wide-body footprint to preserve the 2500 Vrms isolation rating on the /2Y variant. Use a slot or PCB cutout directly under the package body to increase clearance between logic-side and bus-side copper pours. Do not run any traces, vias, or copper under the package body.
The TJF1052IT integrates an isolated DC-DC bias supply, so only one external 3.3 V or 5 V rail on the logic side is required. Decouple VDD (pin 1) with a 100 nF ceramic capacitor placed within 2 mm of the pin, and add a 10 uF bulk capacitor on the same net for transient load events on the isolated bus side. Do NOT connect logic ground (GND1) and bus ground (GND2) together at any point - the isolation barrier depends on this separation.
A common design mistake is to leave TXD floating when the host controller is unpowered - this can cause the CAN bus to enter dominant state continuously and trigger bus-dominant time-out protection. Always pull TXD to VDD through a 10 kohm resistor when unused. Also, ensure the CANH/CANL traces are impedance-controlled (typically 120 ohm differential) and terminated with 120 ohm resistors at both ends of the bus.
Keep CANH and CANL traces as a tightly coupled differential pair with 100 ohm differential impedance (120 ohm if using 120 ohm termination). Route the bus away from switching power supply inductors and high dv/dt traces. The TJF1052IT's 20 kV/us CMTI provides robust rejection of fast transients, but proper layout still matters for EMC compliance.
Informações de conformidade
RoHS compliant per NXP product page. The part is an industrial-grade isolated CAN transceiver; AEC-Q100 automotive qualification status is not specified for the standard TJF1052IT variants. Verify functional-safety qualification on the /5Y variant if needed.
