Overview
The MC33901WEFR2 is a high-speed CAN (Controller Area Network) transceiver produced by NXP USA Inc. This device is designed to provide the physical interface between the CAN protocol controller and the CAN bus. It operates in high-speed mode, supporting data rates up to 1.0 Mbits/s. The MC33901WEFR2 is part of the SMARTMOS family and features advanced protection mechanisms and low power consumption, making it suitable for a variety of automotive and industrial applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Notes |
|---|---|---|---|---|---|
| VDD (Supply Voltage) | 4.5 | - | 5.5 | V | - |
| VIO (I/O Voltage) | 2.8 | - | 5.5 | V | - |
| TA (Operating Temperature) | -40 | - | 125 | °C | - |
| tXDOM (TXD Dominant Time) | 2.5 | - | 16 | ms | MC33901 & MC33901N versions only |
| tWU_FLT1 (Wake-up Filter 1) | 0.5 | - | 5.0 | µs | MC3x901WEF and MC3x901WNEF versions only |
| tWU_FLT2 (Wake-up Filter 2) | 0.08 | - | 1.0 | µs | MC3x901WEF and MC3x901WNEF versions only |
| tWU_TO (Wake-up Timeout) | 1.5 | - | 7.0 | ms | MC3x901WEF and MC3x901WNEF versions only |
| Package Type | - | - | - | SOIC 8 | - |
Key Features
- High-Speed CAN Transceiver: Supports data rates up to 1.0 Mbits/s.
- SMARTMOS Technology: Provides advanced protection mechanisms and low power consumption.
- Wake-up Mechanism: Includes bus monitoring circuitry to detect and report bus wake-ups, enhancing power management in standby mode.
- ESD Protection and Robustness: Integrated ESD protection and high robustness against external disturbances such as EMC and electrical transients.
- Dual Operating Modes: Normal mode and Standby mode, with the Standby mode allowing for low power consumption and wake-up reporting.
- Timing Protection: TXD dominant protection to prevent permanent dominant states on the bus.
Applications
The MC33901WEFR2 is suitable for various applications, including:
- Automotive Systems: Vehicle networks, engine control units, and other automotive communication systems.
- Industrial Automation: Control systems, sensors, and actuators in industrial environments.
- Embedded Systems: Microcontroller-based systems requiring CAN bus communication.
Q & A
- What is the maximum data rate supported by the MC33901WEFR2?
The MC33901WEFR2 supports data rates up to 1.0 Mbits/s. - What is the purpose of the wake-up mechanism in the MC33901WEFR2?
The wake-up mechanism detects and reports bus wake-ups, allowing the device to transition from standby to normal mode when bus activity is detected. - What type of protection does the MC33901WEFR2 offer against external disturbances?
The device offers integrated ESD protection and high robustness against external disturbances such as EMC and electrical transients. - What are the operating modes of the MC33901WEFR2?
The device operates in Normal mode and Standby mode, with the Standby mode allowing for low power consumption and wake-up reporting. - What is the package type of the MC33901WEFR2?
The MC33901WEFR2 is available in an SOIC 8 package. - Is the MC33901WEFR2 still in production?
No, the MC33901WEFR2 is no longer manufactured. Users should consider substitutes or alternative package types. - What is the typical operating temperature range for the MC33901WEFR2?
The operating temperature range is -40°C to 125°C. - What is the function of the TXD pin in the MC33901WEFR2?
The TXD pin controls the state of the CAN bus drivers. When TXD is low, the CANH and CANL drivers are activated, setting the bus to a dominant state. - How does the RXD pin report the bus state in the MC33901WEFR2?
The RXD pin reports the bus state by being high when the bus is in a recessive state and low when the bus is in a dominant state. - What is the purpose of the tXDOM timing parameter in the MC33901WEFR2?
The tXDOM parameter ensures that the bus does not remain in a dominant state for too long, preventing permanent dominant states on the bus).
