Not enough.
Because the CAN bus defines a maximum communication rate of 1Mbps, and the standard CAN bus voltage is 2.5V, the 25V voltage does not meet the voltage requirements of the CAN bus, nor CAN it meet the requirements of the CAN bus communication rate.
If you want to perform high-speed, stable CAN bus communication, you need to use a CAN chip or module that meets the standard, and use the appropriate voltage power supply.
CAN bus is usually used in industrial control, automotive electronics and other fields, its advantages include high reliability, strong adaptability, long transmission distance and so on.
In practical application, it is necessary to select the appropriate CAN bus type and networking mode according to different requirements.
Normal, CAN high and CAN low bus idle voltage is 2.5 volts, data transmission CAN high is 3.5 volts, CAN low is 1.5 volts, this voltage is not absolute, but CAN high is higher than 2.5 volts, CAN low is lower than 2.5 volts, on the axis of 2.5 volts relative balance is no problem, add up the total is 5V voltage.
Normally, CANH and CANL voltage is the same, that is, the pressure difference between them is 0, indicating that the bus is idle and no node is sending data.
Here, many people are easy to confuse the concept of CANH\/CANL voltage and voltage difference, which respectively measure the voltage for the interface chip power supply, and measure the voltage difference between each other. When the bus is idle, the theoretical voltage value is 2.5V, and the voltage difference is 0V. Usually only the pressure difference between CANH and CANL is used to describe the signal state because it is a pair of balanced differential signals.