Overview
The NCV7357MW0R2G is a high-speed CAN FD (Controller Area Network with Flexible Data Rate) transceiver produced by onsemi. This component is designed to interface between a CAN protocol controller and the physical bus, ensuring compliance with the ISO 11898-2 standard. It is particularly suited for automotive and industrial applications where high-speed data transmission and robustness against electrical transients are crucial.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VCC Power Supply Voltage | 4.5 | 5.5 | 5.5 | V | |
| VIO Supply Voltage (NCV7357-3 version) | 2.8 | 5.5 | V | ||
| Operating Temperature Range | -40 | 150 | °C | ||
| Common-Mode Input Resistance at CANH and CANL | -2 V ≤ VCANH, VCANL ≤ +7 V | 15 | 25 | 37 | kΩ |
| Transmitter Output Voltage (Dominant) | VTxD = 0 V | 3.0 | 3.6 | 4.25 | V |
| Differential Bus Output Voltage (Dominant) | VTxD = 0 V; 45 Ω < RLT < 65 Ω | 1.5 | 2.25 | 3.0 | V |
Key Features
- High-Speed CAN FD Compatibility: Compliant with ISO 11898-2, supporting high-speed data transmission up to 1 Mbps.
- Extended Bus Load Range: Capable of handling a wide range of bus loads.
- Power-Off Protection: Enters a virtual mode during undervoltage conditions, disabling the transceiver and keeping CAN bus pins floating.
- Normal and Silent Modes: Normal mode for active communication, and silent mode where the transmitter is disabled but the transceiver can still listen to the bus.
- Overtemperature Detection: Thermal protection circuit switches off the transmitter if the junction temperature exceeds a certain threshold.
- TxD Dominant Timeout Function: Prevents the bus lines from being driven to a permanent dominant state, ensuring network communication integrity.
- Fail-Safe Features: Includes current-limiting circuits and protection against automotive electrical transients (ISO 7637).
- VIO Supply Pin: Available in the NCV7357-3 version, allowing proper I/O level adjustment with the microcontroller.
Applications
- Automotive Systems: Ideal for use in vehicle networks, including engine control units, transmission control units, and other automotive electronics.
- Industrial Automation: Suitable for industrial control systems, robotic systems, and other high-reliability applications requiring robust communication.
- IoT and Embedded Systems: Can be used in various IoT and embedded systems that require reliable and high-speed data communication.
Q & A
- What is the NCV7357MW0R2G used for?
The NCV7357MW0R2G is a high-speed CAN FD transceiver used to interface between a CAN protocol controller and the physical bus.
- What standards does the NCV7357MW0R2G comply with?
It complies with the ISO 11898-2 standard for high-speed CAN FD communication.
- What are the operating voltage ranges for the NCV7357MW0R2G?
The VCC power supply voltage ranges from 4.5 V to 5.5 V, and the VIO supply voltage (for the NCV7357-3 version) ranges from 2.8 V to 5.5 V.
- What is the purpose of the TxD dominant timeout function?
The TxD dominant timeout function prevents the bus lines from being driven to a permanent dominant state, ensuring network communication integrity.
- How does the overtemperature detection feature work?
The thermal protection circuit switches off the transmitter if the junction temperature exceeds a certain threshold, reducing power dissipation and protecting the IC.
- What kind of protection does the NCV7357MW0R2G offer against electrical transients?
The device is protected against automotive electrical transients according to ISO 7637.
- What is the significance of the VIO supply pin in the NCV7357-3 version?
The VIO supply pin allows proper I/O level adjustment with the microcontroller, ensuring compatible signal levels.
- What are the common applications of the NCV7357MW0R2G?
It is commonly used in automotive systems, industrial automation, and various IoT and embedded systems.
- How does the silent mode function in the NCV7357MW0R2G?
In silent mode, the transmitter is disabled, but the transceiver can still listen to the bus and provide data to the controller without sending any data to the bus.
- What happens during an undervoltage condition on the VCC or VIO pins?
The device enters a virtual mode, disabling the transceiver and keeping CAN bus pins floating until the supply voltage recovers.
