ISO1050QDUBRQ1 - 2.5kVRMS Isolated CAN Transceiver | Texas Instruments
MPN: ISO1050QDUBRQ1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.1 | $6.10 |
| 10 | $5.55 | $55.50 |
| 100 | $4.8 | $480.00 |
| 500 | $4.2 | $2,100.00 |
| 1,000 | $3.85 | $3,850.00 |
Drop-in alternatives for ISO1050QDUBRQ1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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ISO1050DUBR
✅ Drop-In✓ In Stock
$1.75 / Unit
View Datasheet →ISO1050QDUBRQ1 Maximum Ratings & Electrical Characteristics
| Product Type | Galvanically Isolated CAN Transceiver |
| Standard Compliance | ISO11898-2 |
| Isolation Rating | 2500 VRMS (DUB package) |
| Isolation Barrier | Silicon oxide (SiO2) |
| Supply Voltage | 5 V |
| Signaling Rate | [DATA_NEEDED: signaling rate] |
| Number of Terminals | 8 |
| Package | SOIC-8 (DUB, R-PDSO-G8) |
| Package Length | 9.15 mm |
| Operating Temperature | -55C to +105C |
| Automotive Qualification | AEC-Q100 (Q1) |
| MSL Level | 4 |
| Mounting Type | Surface Mount |
| Isolation Family | TI ISO10xx |
| Bus Interface | CANH / CANL differential |
| RoHS Status | [DATA_NEEDED: RoHS status] |
ISO1050QDUBRQ1 Pin Configuration
| Pin 1 | VCC1 — Logic-side 5V supply |
| Pin 2 | TXD — Transmit data input from CAN controller (logic side) |
| Pin 3 | RXD — Receive data output to CAN controller (logic side) |
| Pin 4 | GND1 — Logic-side ground |
| Pin 5 | GND2 — Bus-side ground (isolated) |
| Pin 6 | CANL — CAN low differential bus line |
| Pin 7 | CANH — CAN high differential bus line |
| Pin 8 | VCC2 — Bus-side 5V supply (isolated) |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
ISO1050QDUBRQ1 is suitable for 6 applications: Automotive CAN Gateways, Industrial Field Bus Systems, Motor Drive Control Networks, Remote Sensing Nodes, Building Automation and Elevator Control, Medical Equipment Isolated Communication.
Automotive CAN Gateways
The ISO1050QDUBRQ1 fits automotive gateways because its AEC-Q100 qualification and -55C to +105C range cover under-hood and body electronics environments, while the 2500 VRMS SiO2 barrier blocks ground potential differences between vehicle power domains. Placed between the gateway MCU and the CANH/CANL twisted pair, it isolates logic from transients on the bus. Pairing with an isolated DC-DC supply creates a fully isolated CAN node; the trade-off is the 5V bus supply requirement versus 3.3V-only transceivers.
Recommended
Industrial Field Bus Systems
In industrial field bus and Profibus-style CAN networks, long cables and separate equipment grounds produce large common-mode voltages; the ISO1050's 2500 VRMS SiO2 isolation and ISO11898-2 compliance directly address this. The single 8-pin SOIC replaces optocoupler-plus-transceiver chains, cutting BOM count and timing skew. Use one isolated supply for the bus side and keep the barrier gap clear on the PCB. Cost per node is slightly higher than a bare transceiver but far below discrete isolation designs.
Recommended
Motor Drive Control Networks
Motor inverters switch hundreds of volts with fast dv/dt, injecting noise into control-area networks; the ISO1050's capacitive SiO2 barrier provides galvanic separation between the MCU domain and the noisy power-stage bus. The device sits on the isolated CAN link between the main controller and inverter board. With 5V bus-side supply and ISO11898-2 signaling, it maintains communication integrity under high common-mode transients. Ensure PCB creepage across the DUB package barrier matches the 2500 VRMS rating.
Recommended
Remote Sensing Nodes
Remote CAN-enabled sensors in industrial and automotive systems frequently sit at different ground potentials from the controller; the ISO1050QDUBRQ1's 2500 VRMS isolation protects the controller while its -55C to +105C range survives harsh locations. The node MCU connects TXD/RXD to side 1 while side 2 drives the bus. Because the IC integrates oscillator and modulator on-chip, only bypass capacitors are needed, simplifying small sensor PCBs. Budget an isolated 5V supply for the bus side.
Recommended
Building Automation and Elevator Control
Building automation controllers span floors and cabinets with long CAN runs and mixed grounding schemes; the ISO1050's galvanic isolation prevents ground loops and surge coupling from corrupting the network. Compliant with ISO11898-2, it drives standard CAN twisted pairs up to the specified bus length. Its single-package integration reduces node cost versus optocoupler designs and improves long-term reliability since SiO2 isolation does not degrade like optocoupler CTR. Standard (non-Q1) ISO1050DUBR may be used to reduce cost in non-automotive installs.
Recommended
Medical Equipment Isolated Communication
Medical devices require patient-side and chassis-side circuits to be galvanically separated; the ISO1050's 2500 VRMS SiO2 isolation supports isolated CAN links between the main controller and front-end modules in diagnostic and monitoring equipment. The capacitive barrier adds negligible propagation skew, keeping CAN timing budgets intact across the isolation. Combined with a medically-rated isolated power supply, the device completes the patient-isolation barrier on the communication path. Verify system-level creepage/clearance against applicable medical safety standards in the final design.
Recommended
Recommended Products Summary
Engineering reference data for ISO1050QDUBRQ1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ISO1050DUBR | ISO1050DW | ISO1050QDWDRQ1 |
|---|---|---|---|---|
| Package | SOIC-8 (DUB) | SOIC-8 (DUB) - same | SOIC-16 (DW) - different footprint | SOIC-16 (DW) - different footprint |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Isolation Rating | 2500 VRMS | 2500 VRMS | 5000 VRMS | 5000 VRMS |
| AEC-Q100 Qualified | Yes (Q1) | No | No | Yes (Q1) |
| Operating Temperature | -55C to +105C | -55C to +105C | [DATA_NEEDED] | -55C to +105C |
| Standard Compliance | ISO11898-2 | ISO11898-2 | ISO11898-2 | ISO11898-2 |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V |
| Isolation Barrier Technology | Silicon oxide (SiO2) capacitive | SiO2 capacitive | SiO2 capacitive | SiO2 capacitive |
Key Differentiators
- AEC-Q100 automotive qualification (vs ISO1050DUBR)
- Integrated isolation plus CAN transceiver in 8 pins (vs ISO1050DW)
- SiO2 capacitive isolation without optocoupler aging (vs Discrete optocoupler + CAN transceiver solution)
Design Notes
Place 100nF ceramic bypass capacitors directly across VCC1-GND1 and VCC2-GND2, within 2mm of the pins, since the ISO1050's internal oscillator draws dynamic current across the isolation barrier. Route the isolation barrier as a clear slot or keep-out on the PCB so that creepage and clearance across the DUB package match the 2500 VRMS rating. Do not route high-speed logic traces under the barrier region.
The DUB package is rated 2500 VRMS - if your system requires 5000 VRMS working isolation, the DUB is undersized; move to the ISO1050DW (SOIC-16), accepting a PCB redesign since footprints differ. Also, do not substitute non-Q1 ISO1050DUBR in automotive designs requiring AEC-Q100 traceability - the Q1 qualification is a sourcing and process requirement, not just a temperature-range figure.
The bus-side CANH/CANL traces should be routed as a tightly coupled differential pair with a common-mode choke and split termination (two 60-ohm resistors with a 2.2nF-4.7nF cap to GND2) to improve EMC. Keep the isolated ground (GND2) plane compact and connected to chassis via a single low-ESL capacitor or specified hybrid network to control radiated emissions from common-mode bus current.
Compliance Information
AEC-Q100 qualified per Q1 suffix. RoHS/REACH status not present in provided verified data - confirm on TI product page.
