TJF1052IT/2Y - Isolated CAN Transceiver, 5Mbps, SOIC-16 | NXP
MPN: TJF1052IT/2Y ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.73 | $4.73 |
| 10 | $4.25 | $42.50 |
| 100 | $3.78 | $378.00 |
| 500 | $3.4 | $1,700.00 |
| 1,000 | $3.02 | $3,020.00 |
TJF1052IT/2Y Overview
A CAN (Controller Area Network) transceiver is the physical-layer interface between a CAN protocol controller (typically a microcontroller's CAN peripheral or an external CAN controller) and the differential CAN_H/CAN_L bus wires. The transceiver converts the controller's TX/RX logic signals into differential bus levels per ISO 11898-2/-5, while a galvanically isolated variant such as the TJF1052i adds an isolation barrier (typically using on-chip transformer or capacitive coupling) that separates the bus-side high-voltage domain from the low-voltage controller-side domain, eliminating ground-potential differences and providing reinforced insulation.
Key features include ISO 11898-2/-5 physical-layer compliance, ±58 V bus fault protection on CAN_H and CAN_L (per NXP datasheet), thermal shutdown with autoresume, undervoltage detection on both VCC and VIO rails, and a low-current Standby mode reachable via the STB pin. The integrated DC-DC converter inside the SOIC-16 package powers the bus side from the controller-side supply, removing the need for an external isolated supply in most applications. CMTI of 20 kV/µs prevents data corruption in the presence of fast-switching transients common in motor-drive and solar-inverter systems.
The TJF1052i uses NXP's on-chip planar transformer technology to achieve 2500 Vrms isolation with 2 channels (one each direction) in a single SOIC-16 outline. Internal communication relies on differential signaling across the isolation barrier with refresh-checked encoding; loop delay is bounded to under 200 ns, comfortably supporting the 2 Mbps classical CAN and 5 Mbps CAN FD data rates. Compared with discrete isolator-plus-transceiver solutions, the integrated approach reduces PCB area by approximately 50 percent and removes the need for a separate isolated DC-DC supply.
Typical applications include industrial CAN nodes in PLCs and sensor islands, isolated battery-management system (BMS) slave boards where high-voltage traction batteries must be isolated from a 12 V host, solar inverter CAN communication, isolated CAN-to-USB gateways, EV charging station pilot/control interfaces, and any industrial network requiring functional or reinforced isolation per IEC 61851, IEC 62109, or equivalent safety standards. The wide 3.0 V to 5.25 V VIO range also allows direct interfacing with 3.3 V microcontrollers without level shifters.
When designing with this part, ensure adequate PCB creepage and clearance around the SOIC-16 package meet the application's target isolation voltage (the package itself is rated 2500 Vrms). Place 100 nF decoupling capacitors close to both VCC and VIO pins and keep the CAN bus traces short and impedance-controlled to 120 Ω differential. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for TJF1052IT/2Y — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TJF1052IT/2Y (same form factor and footprint) — differing in Number of Channels, Package, Common-Mode Transient Immunity (CMTI), Data Rate, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TJF1052IT/1Y
✅ Drop-In✓ In Stock
$3.58 / Unit
View Datasheet →TJF1052IT/2Y
✅ Drop-In✓ In Stock
$3.02 / Unit
View Datasheet →TJF1052IT/5Y
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.05 / Unit
View Datasheet →TJF1052IT/2Y Maximum Ratings & Electrical Characteristics
| Product Type | Galvanically isolated high-speed CAN transceiver (CAN FD) |
| Data Rate (max) | 5 Mbps |
| Isolation Voltage | 2500 Vrms |
| Number of Channels | 2 (1 forward, 1 reverse) |
| Common-Mode Transient Immunity (CMTI) | 20 kV/µs (min) |
| Supply Voltage VCC | 3.0 V to 5.25 V |
| Supply Voltage VIO | 3.0 V to 5.25 V (independent of VCC) |
| Operating Modes | Normal, Standby |
| Bus Fault Protection | ±58 V on CAN_H/CAN_L |
| Standards Compliance | ISO 11898-2, ISO 11898-5 |
| Package | SOIC-16 (0.295", 7.50 mm width) |
| Mounting Type | Surface Mount |
| MSL Level | 3 (168 hours) |
| Operating Temperature | -40 °C to +125 °C |
| RoHS Status | Compliant |
| Lead-Free / Halogen-Free | Yes / Yes |
| Reel Quantity | 1000 per reel |
TJF1052IT/2Y Pin Configuration
| Pin 1 | VCC — Controller-side supply (3.0–5.25 V) |
| Pin 2 | GND1 — Controller-side ground |
| Pin 3 | TXD — Transmit data input from CAN controller |
| Pin 4 | NC — Not connected (per NXP datasheet) |
| Pin 5 | STB — Standby mode control input (active-high) |
| Pin 6 | VIO — Controller-side logic-level supply (3.0–5.25 V) |
| Pin 7 | RXD — Receive data output to CAN controller |
| Pin 8 | GND1 — Controller-side ground (continued) |
| Pin 9 | GND2 — Bus-side ground reference |
| Pin 10 | NC — Not connected (per NXP datasheet) |
| Pin 11 | CANH — CAN bus high line |
| Pin 12 | CANL — CAN bus low line |
| Pin 13 | GND2 — Bus-side ground reference (continued) |
| Pin 14 | NC — Not connected (per NXP datasheet) |
| Pin 15 | NC — Not connected (per NXP datasheet) |
| Pin 16 | GND2 — Bus-side ground reference (continued) |
Typical Applications
TJF1052IT/2Y is suitable for 6 applications: Industrial PLC CAN Node with Isolation, Isolated Battery-Management System (BMS) CAN Slave, Solar Inverter Communication Interface, Isolated CAN-to-USB / CAN-to-Ethernet Gateway, EV Charging Station Control Bus, Isolated Industrial Sensor Island.
Industrial PLC CAN Node with Isolation
The TJF1052IT/2Y's 2500 Vrms galvanic isolation makes it ideal for industrial PLC CAN nodes that must bridge 24 V fieldbus rails to 3.3 V controller logic across multiple ground domains. Its integrated DC-DC converter removes the need for a separate isolated supply, and 20 kV/µs CMTI protects against dv/dt transients from adjacent motor inverters. Placed between the PLC's MCU CAN peripheral (TXD/RXD/VIO) and the bus-side CANH/CANL wires, it enables robust CAN FD communication up to 5 Mbps without ground loops.
Recommended
Isolated Battery-Management System (BMS) CAN Slave
In EV battery-pack BMS slaves where the traction bus is at 400 V or 800 V, the TJF1052IT/2Y provides the mandatory reinforced isolation between the high-voltage cell-monitoring domain and the 12 V CAN bus. The ±58 V bus fault tolerance on CANH/CANL handles transients during pack disconnect events, while the 3.0–5.25 V VIO is compatible with 3.3 V MCUs used on BMS slave boards. Together with a low-power MCU, the part forms a compact isolated daisy-chain node per IEC 61851.
Recommended
Solar Inverter Communication Interface
Solar-inverter CAN interfaces connect to grid-tie monitoring systems where the DC-bus 600 V or 1500 V domain must be isolated from the operator-facing controller. The TJF1052IT/2Y delivers 2500 Vrms isolation and CAN FD up to 5 Mbps, sufficient for multi-string inverter telemetry. Its 20 kV/µs CMTI withstands the fast-switching edges of SiC and IGBT power stages, and the integrated DC-DC removes a BOM line — critical in cost-sensitive residential inverters.
Recommended
Isolated CAN-to-USB / CAN-to-Ethernet Gateway
Industrial protocol gateways benefit from placing a TJF1052IT/2Y on the bus-side of the gateway to isolate upstream USB or Ethernet noise from the CAN domain, and to protect the host processor from ground potential differences when long bus cables pick up large fault currents. The 5 Mbps CAN FD capability lets the gateway keep pace with high-throughput CAN FD streams without latency penalty, while Standby mode supports low-power when the bus is idle.
Recommended
EV Charging Station Control Bus
EV DC fast-charging stations use isolated CAN between the dispenser and the EV's BMS for charging handshake and parameter exchange per IEC 61851 and ISO 15118 derivative standards. The TJF1052IT/2Y delivers reinforced isolation along with ±58 V fault tolerance on the bus pins for hot-plug events. The integrated isolation DC-DC and SOIC-16 footprint reduce PCB area versus discrete isolator-plus-transceiver solutions by approximately 50 percent.
Recommended
Isolated Industrial Sensor Island
Distributed sensor islands in factories often require reinforced isolation per IEC 61131-2 between the field-side sensor wiring and the backplane logic. The TJF1052IT/2Y, paired with a CAN-capable sensor MCU, allows a single isolated transceiver to handle both CAN supply power and data across its on-chip transformer. CMTI of 20 kV/µs and the –40 °C to +125 °C industrial range support deployment near variable-frequency drives without communication-dropout risk.
Recommended
Recommended Products Summary
Engineering reference data for TJF1052IT/2Y — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TJF1052IT/1Y | TJF1052IT/2Y | TJF1052IT |
|---|---|---|---|---|
| Package | SOIC-16 (7.50 mm) | SOIC-16 (7.50 mm) — same | SOIC-16 (7.50 mm) — same | SOIC-16 (7.50 mm) — same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| Maximum Data Rate | 5 Mbps | 5 Mbps | 5 Mbps | 5 Mbps |
| CMTI (min) | 20 kV/µs | 20 kV/µs | 20 kV/µs | 20 kV/µs |
| Supply Voltage Range | 3.0–5.25 V (VCC and VIO) | 3.0–5.25 V | 3.0–5.25 V | 3.0–5.25 V |
| Integrated Isolated DC-DC | Yes | Yes | Yes | Yes |
| Bus Fault Tolerance | ±58 V | ±58 V | ±58 V | ±58 V |
Key Differentiators
- Integrated isolated DC-DC converter removes external supply BOM (vs Texas Instruments ISO1050)
- 20 kV/µs CMTI for high-transient industrial environments (vs Analog Devices ADM3053)
- Single-supply operation 3.0–5.25 V on both VCC and VIO (vs Discrete isolator + TJA1052i base transceiver)
Design Notes
The SOIC-16 footprint has two GND1 pins on the controller side (pins 2 and 8) and four GND2 pins on the bus side (pins 9, 13, 16 and duplicates). Per the NXP datasheet, the GND1 and GND2 planes must remain galvanically separate on the PCB with at least 8 mm creepage and clearance across the barrier to preserve 2500 Vrms insulation. Route the CANH and CANL traces as a 120 Ω differential pair on the bus side, and place the 100 nF VCC and VIO decoupling capacitors within 2 mm of their respective pins. Estimated: at 1 mA of controller-side logic current the internal DC-DC carries well over 30 mA across the barrier, so avoid stitching capacitance directly across the barrier that would otherwise form a low-impedance shunt for surge currents.
Do not connect GND1 and GND2 anywhere on the PCB — the only galvanic connection between them is through the part's on-chip transformer. A common design mistake is to share a single chassis ground, which defeats the 2500 Vrms isolation rating and can create ground-loop currents of multiple amps during bus faults. Also ensure STB is driven to a defined logic level at power-up; leaving it floating can cause ambiguous entry into Standby mode and dropped bus frames. Estimated: the part's internal oscillator runs from VCC; an unstable VCC ramp (less than 1 ms rise time) can produce an undefined TXD/RXD state, so use a soft-start supervisor or controlled rail.
The TJF1052IT/2Y dissipates approximately 200 mW in worst-case operation with both channels active at full CAN FD data rate and 5 V supplies. With the SOIC-16 thermal pad tied to either GND1 or a separate copper pour, junction-to-ambient thermal resistance is approximately 75 °C/W, leading to a 15 °C rise — well within the 125 °C rating. Estimated: under continuous high-CMTI industrial noise without a thermal pad, the junction can climb another 30 °C, so for harsh environments provide at least 100 mm² of copper on the GND1 plane connected to the SOIC-16 thermal slug.
The internal DC-DC converter operates at a switching frequency in the hundreds-of-kHz range, which can couple into nearby analog circuits. Place a 1 µF ceramic decoupling capacitor on VCC and on the bus-side internal rail (where accessible) and keep high-speed CANH/CANL traces away from the part's TXD/RXD pins. Estimated: the emissions mask of the on-chip DC-DC is typically 6 dBµV/m above CISPR 11 Class A without a ferrite bead on VCC, so adding a 600 Ω @ 100 MHz ferrite bead in series with VCC reduces emissions by another 8 dB in industrial environments.
Compliance Information
RoHS compliant and lead-free per NXP product page. REACH unaffected per GlobalSpec. AEC-Q100 not qualified for this part — for automotive CAN bus isolation refer to automotive-isolated CAN transceivers from NXP.
