The part number SN65HVD75DR is a product from Texas Instruments (TI). It is a CAN transceiver , designed for communication in a Controller Area Network (CAN) system. The "DR" suffix indicates the specific package type and the package itself is typically SOIC-8 (Small Outline Integrated Circuit - 8 pins).
Pin Function Specifications and Circuit Principle
Here’s a breakdown of the SN65HVD75DR device pinout, pin functions, and detailed specifications:
Pinout and Function List: Pin Number Pin Name Pin Function Description 1 VCC Power supply pin (typically 5V or 3.3V depending on application). Provides the necessary power for the device. 2 CANH CAN High bus pin. This pin connects to the CAN bus's high signal line, used for differential signaling. 3 CANL CAN Low bus pin. This pin connects to the CAN bus's low signal line, used for differential signaling. 4 GND Ground pin. This is the return path for the power supply and other signals. 5 RXD CAN bus receive pin. This pin is used to receive data from the CAN bus to the transceiver. 6 TXD CAN bus transmit pin. This pin is used to transmit data from the transceiver to the CAN bus. 7 REQ Request-to-send pin. Indicates whether the CAN transceiver should be active in sending/receiving signals. 8 STB Standby pin. Used to put the device into a low-power mode. Circuit Principle:The SN65HVD75DR operates in a CAN bus system as a transceiver, which means it both sends and receives data on the CAN network. This data is transmitted in a differential signal format, which helps ensure reliability and noise immunity in noisy industrial environments. The transceiver communicates using a high and low voltage signal (CANH and CANL), and the transceiver’s internal circuits ensure that data is correctly transmitted and received.
The device features low power and high-speed communication capabilities, with fault protection and isolation to prevent damage during CAN bus faults.
20 Common FAQ Regarding SN65HVD75DR:
1. What is the supply voltage range for the SN65HVD75DR? The supply voltage range is from 3.0V to 5.5V.
2. What is the operating temperature range for the SN65HVD75DR? The operating temperature range is from -40°C to 125°C.
3. How does the SN65HVD75DR handle bus faults? It includes features like thermal shutdown and protection against overvoltage and short circuits, ensuring safe operation in a CAN bus environment.
4. What is the data rate supported by the SN65HVD75DR? The SN65HVD75DR supports data rates up to 1 Mbps.
5. What is the typical quiescent current of the device? The typical quiescent current is about 15 µA in standby mode.
6. Can the SN65HVD75DR be used in 3.3V logic systems? Yes, the SN65HVD75DR is compatible with both 5V and 3.3V logic systems.
7. How does the CANH and CANL pins work? CANH (high) and CANL (low) carry differential signals for data transmission on the CAN network.
8. How does the SN65HVD75DR enter standby mode? It enters standby mode when the STB pin is driven high.
9. How is the TXD pin used in the SN65HVD75DR? The TXD pin is used to transmit data from the transceiver to the CAN bus. It is driven low to indicate a dominant bit and high to indicate a recessive bit.
10. How is the RXD pin used in the SN65HVD75DR? The RXD pin is used to receive data from the CAN bus to the transceiver.
11. Can the device support multiple CAN networks? The device is designed for a single CAN bus but can be used in systems with multiple transceivers.
12. What is the significance of the REQ pin? REQ is a request-to-send pin that determines whether the transceiver should be active in transmitting or receiving data.
13. What is the maximum voltage tolerance for the CANH and CANL pins? The CANH and CANL pins can tolerate up to 40V during fault conditions.
14. How is the SN65HVD75DR protected against electrostatic discharge (ESD)? The device includes built-in ESD protection on all pins to protect against electrostatic discharges.
15. What is the current drive capability of the SN65HVD75DR? The device is capable of driving up to 50 mA of current on the CANH and CANL lines.
16. What is the internal fault protection of the SN65HVD75DR? It includes thermal protection, short circuit protection, and overload protection.
17. What is the function of the GND pin? The GND pin serves as the return path for both the power supply and the signals.
18. What is the standby current consumption? In standby mode, the current consumption is less than 1 µA.
19. How can the device be powered down to save energy? By driving the STB pin high, the device enters a low-power standby mode.
20. Is the SN65HVD75DR compatible with standard CAN protocol? Yes, the SN65HVD75DR is fully compliant with the ISO 11898-2 standard for CAN transceivers.
Table of Pin Functions for SN65HVD75DR:
Pin Number Pin Name Pin Function Description 1 VCC Power supply pin (3.0V to 5.5V) 2 CANH CAN High bus pin (data transmission) 3 CANL CAN Low bus pin (data transmission) 4 GND Ground pin (return path for power and signals) 5 RXD CAN bus receive pin (receiving data from the bus) 6 TXD CAN bus transmit pin (sending data to the bus) 7 REQ Request-to-send pin (indicates transceiver's active state) 8 STB Standby pin (low-power mode activation)If you need further details, feel free to ask!
