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Can SN65HVD1050 and SN75176 be used with 2.8V-3.0V

Other Parts Discussed in Thread: SN65HVD1050, SN65HVD233, SN65HVD72, SN65HVD75, SN65HVD01

We were having 5V system, in which we are using SN65HVD1050 as CAN transceiver and SN75176 as 485 transceiver, but now we are having only 2.8V-3.0V system. Can we use this both transceiver with this supply system?

  • Hello Dhruv,

    while there are new transceivers available that can operate over a 3-to-5V supply range, the SN65HVD1050 and the SN75176 are true 5V technology components requiring a minimum supply of 4.5V (SN65HVD1050) and 4.75V (SN75176). Below their minimum supply voltages, the transistors of the driver and receiver stages are not biased properly leading to all sorts of malfunctions. For 3V systems please select from our wide range of 3V transceivers.

    Regards, Thomas

  • Hi Thomas,


    Thanks for the reply. Will you please suggest us the compatible drivers for both networks with 3V systems?

    We have found SN65HVD233 for CAN but what about lower 2.8V. Please also guide us for RS485.

  • Hello Dhruv,

    the best 3V half-duplex candidates I strongly recommend are the SN65HVD72 with maximum 250 kbps data rate, or the SN65HVD75 with up to 20 Mbps data rate. Both have up to 12 kV IEC ESD rating which is equivalent to 33 kV HBM-ESD rating. 

    We also have a data rate selectable device, the SN65HVD01. You can select data rates between 250 kbps and 20 Mbps by leaving the SLR pin either open, or connected to ground. This device also has a separate logic and bus supplies. The logic supply can be as low as 1.65V and up to maximum 3.6V. The bus supply has a narrower range from 3.0V to 3.6V.

    On www.TI.com we have a select guide tool. Simply click on Interface in the Product section on the left. Chose RS-485.

    The table wit approx. 200 devices pops up. Now you select  your parameters in the table heading to quickly cut down to the device you need.

    Let me knop if you need help.

    All the best, Thomas

  • Thanks Thomas,


    This thread seems solved.

  • Hi Dhruv,

    We currently do not have any CAN transceivers that have supply voltages that can handle less than 2.8 volts.

    Thanks,

    John

  • Hi John,

    We have decided to go for VCCmin = 3.0V not up to 2.8V.

  • Hi Dhruve,

    I think you will find with a slightly tighter supply voltage (3.3V ±10%) you will find that you have much more transceiver options available to you. Here are the 3.3 volt transceivers that we have in our portfolio.  

    SN65HVD235 - 3.3V CAN with Standby Mode, Autobaud Loop-back

    SN65HVD234 - 3.3V CAN Transceiver with Sleep Mode

    SN65HVD233 - 3.3V CAN Transceiver with Standby Mode, Loop-back

    SN65HVD232 - 3.3-V Can Transceiver, normal mode only

    SN65HVD231 - 3.3V CAN Transceiver with Sleep Mode

    SN65HVD230 - 3.3V CAN Transceiver with Standby Mode

    The difference is with the different modes that each device has, they are all 8-pin CAN transceivers.

    Please let me know if you have any questions,

    John