In this case, you may need to have:
RS-422 Signal coming from sensor -> RS-422 Transceiver -> MCU with CAN controller -> CAN Transceiver -> CANbus
One of the basic function RS-422 transceiver you may be interested is THVD1500 (low data rate, low ESD…
I agree with Bob's comment, and would just add that you may want to consider the newer THVD1500 device since it has a number of advantages over the previous-generation SN65HVD3082E solution. Either solution would be able to work with 32 slave nodes (this…
Derwys,
Yes, the SN65175B devices will function the same as the SN75176B devices, so if you have those more readily available they could be used. (If you are looking for a new part number in general, you might consider our newer THVD1500 device in…
Hi Raphael,
That's a good catch - while TIA-422 specifies a common-mode range from -7 V to +7 V, the single-ended receiver input voltages are specified to +/- 10 V to accommodate some additional differential signaling component. In order to fully cover…
Hello Shu-Cheng,
The input impedance is usually determined by measuring the input current for a given test voltage. This is reflected in the datasheet in the bus input leakage current specification.
I believe what you are seeing in this case is…
Thanks Max for your response. I referred to part number THVD1500, but it's a transceiver to in order to make a buffer I would need to use 2 of these ICs right? I have space constraint on the board that's why I picked SN75176B. Also, I checked on the datasheet…
Hi,
Yes, D pin of SN75LBC176 has weak pull-up resistor. Please refer to the schematics of inputs and outputs on page 3. Can you explain a little more about "at power up some boards are at low level and some at high level"? Do you mean during the power…
Thank you Ravi, Would you pls review my revised block diagram if the newly THVD1500 (single channel receiver) fit requirement better? Wayne Chen 09/29/2017
Hi Fabio,
Your understanding of the problem is correct. There are a couple of different solutions.
One would be to use a transceiver with a "failsafe" function implemented in its receiver. This means that a differential input of 0 V would correspond…
