Overview
The NCV7341D21R2G CAN transceiver, produced by onsemi, serves as the interface between a controller area network (CAN) protocol controller and the physical bus. It is designed to operate in both 12 V and 24 V systems, making it versatile for various applications. The transceiver provides differential transmit capability to the bus and differential receive capability to the CAN controller. Its wide common-mode voltage range of the receiver inputs enhances electromagnetic susceptibility (EMS), and it achieves low electromagnetic emission (EME) through excellent output signal matching.
Key Specifications
| Parameter | Condition | Min | Max | Unit |
|---|---|---|---|---|
| VCC (Supply Voltage for the Core Circuitry) | 4.75 | 5.25 | V | |
| VIO (Supply Voltage for the Digital Interface) | 2.8 | 5.25 | V | |
| VEN (DC Voltage at Pin EN) | -0.3 VIO | 0.3 VIO | V | |
| VTxD (DC Voltage at Pin TxD) | -0.3 VIO | 0.3 VIO | V | |
| VRxD (DC Voltage at Pin RxD) | -0.3 VIO | 0.3 VIO | V | |
| VCANH (DC Voltage at Pin CANH) | 0 < VCC < 5.25 V; No Time Limit | -58 | 58 | V |
| VCANL (DC Voltage at Pin CANL) | 0 < VCC < 5.25 V; No Time Limit | -58 | 58 | V |
| TJ (Junction Temperature) | -40 | 150 | °C | |
| ESDHBM (ESD Level, Human Body Model) | Pins CANH, CANL, VSPLIT, WAKE, VBAT other Pins | -4 | 4 | kV |
Key Features
- Ideal Passive Behavior when Supply Voltage is Removed
- Separate VIO Supply for Digital Interface Allowing Communication to CAN Controllers and Microcontrollers with Different Supply Levels
- Fully Compatible with the ISO 11898 Standard
- High Speed (up to 1 Mb)
- Very Low Electromagnetic Emission (EME)
- VSPLIT Voltage Source for Stabilizing the Recessive Bus Level if Split Termination is Used (Further Improvement of EME)
- Differential Receiver with High Common-Mode Range for Electromagnetic Immunity (EMI)
- Up to 110 Nodes can be Connected in Function of the Bus Topology
- Transmit Data (TxD) Dominant Timeout Function
- Bus Error Detection with Version NCV7341D20
- Bus Pins Protected Against Transients in Automotive Environments
- Bus Pins and Pin VSPLIT Short-Circuit Proof to Battery and Ground
- Thermally Protected
- NCV Prefix for Automotive and Other Applications Requiring Site and Change Controls
Applications
- Automotive Networking
- Industrial Networking
- Automobiles
- Industrial Equipment
Q & A
- What is the primary function of the NCV7341D21R2G CAN transceiver?
The NCV7341D21R2G CAN transceiver serves as the interface between a controller area network (CAN) protocol controller and the physical bus.
- In which voltage systems can the NCV7341D21R2G operate?
The transceiver can operate in both 12 V and 24 V systems.
- What is the maximum data rate supported by the NCV7341D21R2G?
The transceiver supports a high speed of up to 1 Mb/s.
- What is the significance of the VSPLIT voltage source?
The VSPLIT voltage source is used for stabilizing the recessive bus level if split termination is used, further improving electromagnetic emission (EME).
- How many nodes can be connected using the NCV7341D21R2G?
Up to 110 nodes can be connected in function of the bus topology.
- What protection features does the NCV7341D21R2G offer?
The transceiver offers bus pins protected against transients in automotive environments, bus pins and pin VSPLIT short-circuit proof to battery and ground, and thermal protection.
- Is the NCV7341D21R2G compatible with any specific standards?
Yes, it is fully compatible with the ISO 11898 standard.
- What is the purpose of the separate VIO supply?
The separate VIO supply allows communication to CAN controllers and microcontrollers with different supply levels.
- How does the NCV7341D21R2G handle electromagnetic susceptibility and emission?
The transceiver achieves outstanding levels of electromagnetic susceptibility (EMS) and very low electromagnetic emission (EME) due to its wide common-mode voltage range and excellent output signal matching.
- What is the significance of the NCV prefix?
The NCV prefix indicates that the device is suitable for automotive and other applications requiring site and change controls.
