CAN Transceiver Interface: Common Mode Range -12V to +12V

Q: What is the primary function of a CAN Transceiver Interface?

It converts digital signals from a CAN controller into differential voltage signals for transmission over the CAN bus and vice versa for reception, ensuring reliable communication in noisy environments.

Q: What industries commonly use CAN Transceiver Interfaces?

Primarily automotive manufacturing (e.g., in-vehicle networks), but also industrial automation, robotics, medical devices, and aerospace for robust data communication between control units.

Q: How does a CAN Transceiver handle electromagnetic interference?

It uses differential signaling (CAN_H and CAN_L) with high common-mode rejection, built-in filters, and shielding to minimize noise impact, ensuring data integrity in electrically harsh conditions.

Component Specifications

Definition

A CAN Transceiver Interface is an electronic component that converts digital signals from a CAN controller into differential voltage signals for transmission over the CAN bus, and vice versa for reception. It provides electrical isolation, noise immunity, and signal conditioning to ensure reliable data exchange in harsh industrial environments with electromagnetic interference.

Working Principle

The CAN Transceiver Interface operates by receiving digital data from the CAN controller, converting it into differential voltage signals (CAN_H and CAN_L) for transmission on the bus. During reception, it detects differential voltage levels on the bus, converts them back to digital signals, and provides them to the CAN controller. It includes features like bus fault protection, thermal shutdown, and common-mode rejection to maintain communication integrity.

Materials

Silicon semiconductor (for integrated circuits), copper (for pins/leads), epoxy resin (for encapsulation), lead-free solder (for connections), ceramic or plastic (for packaging).

Technical Parameters

Parameter	Typical range	Notes & selection driver
Data Rate	Up to 1 Mbps
ESD Protection	±8 kV (HBM)
Number Of Pins	8 to 14
Supply Voltage	3.3V to 5V
Standby Current	< 10 µA
Common Mode Range	-12V to +12V
Operating Temperature	-40°C to +125°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 11898, DIN 72551

Parent Products

This component is used in the following industrial products

CAN Bus Controller

An electronic device that manages communication on a Controller Area Network (CAN) bus system.

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Engineering Analysis

Risks & Mitigation

Electromagnetic interference disrupting communication
Overvoltage damage from bus faults
Thermal overload due to high ambient temperatures
Signal integrity loss from improper termination

FMEA Triads

Trigger: Excessive electromagnetic interference on the bus
Failure: Data corruption or communication loss
Mitigation: Use shielded cables, proper grounding, and transceivers with high common-mode rejection; implement error detection and retransmission protocols.

Trigger: Overvoltage from short circuits or inductive loads
Failure: Component damage and system downtime
Mitigation: Incorporate overvoltage protection circuits, use transceivers with built-in fault protection, and follow ISO 11898 standards for bus design.

Trigger: High ambient temperature exceeding specifications
Failure: Thermal shutdown or reduced lifespan
Mitigation: Ensure adequate cooling, select transceivers with wide operating temperature ranges, and monitor thermal conditions in the system.

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Signal voltage levels within ±0.5V of ISO 11898 specifications; data timing accuracy within ±1% of nominal rate.

Test Method

Conformance testing per ISO 11898-2 for physical layer, including differential voltage, common-mode range, and EMC immunity tests; in-circuit verification with oscilloscope and CAN analyzer tools.

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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Manufacturers of CAN Transceiver Interface

Manufacturer profiles associated with CAN Transceiver Interface.

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Frequently Asked Questions

What is the primary function of a CAN Transceiver Interface?