Hi Jacky,
The absolute maximum receiver output current is the limit for how much current can flow into or out of the "R" pin. Most applications interface the R pin the a high-impedance input (such as an MCU's GPIO) and would be well below the 24-mA…
RS-4xx devices are more power hungry and, in general, more expensive.
When using many channels, see, e.g., the AM26C31/AM26C32 or AM26LV31/AM26LV32; for the back channel, use any 1+1 transceiver like the THVD1500 or THVD1400.
Hi Jerry,
What kind of signal is coming from the serial port in this case? Is it low-voltage logic (TTL/CMOS) or is it higher-voltage RS-232? In both cases you could use an RS-485 transceiver like THVD1500 to handle the RS-485 interface, but if the…
Hi Shu-Cheng,
We do not have a dedicated chip for this, but it would be simple to combine a UART device like TL16C752D with an RS-485 transceiver like THVD1500. Some example connections are shown in Figures 28 and 29 of the TL16C752D datasheet. If you…
Jin,
You can refer to this blog for the discussion about termination. Generally speaking, if the bus is terminated properly at the receiver side, the reflection should be minimized and the driver side won't see much reflected energy. With that said…
Kirill,
Yes, THVD1500 has +-18V abs max voltage on bus pins. It should be able to handle the 15V maximum voltage on bus required by IEC 61162-1.
SN65HVD21 was designed to meet TIA/EIA-485 Requirement. The device is also compatible with TIA/EIA-422B…
I would add as well that if you are looking for a p2p transceiver IC with higher temperature support, you may want to consider THVD1500 or THVD1550 (depending on the application's data rate).
Regards, Max
Hello,
Unfortunately I am not aware of any SPICE model developed for DS75176B. The closest available model would be for SN65HVD1786, which is also an RS-485-compliant transceiver:
https://www.ti.com/product/SN65HVD1786/toolssoftware
We also have…
Hi,
Since the data rate is not a concern, you can look at THVD1500. This is a basic function RS-485 transceiver. If you have more questions about the implementing, please let me know.
Regards,
Hao
Hi Longfei,
Thanks for the clarifications!
RS-422 tends to use unidirectional (simplex) configurations, so we do not have devices that combine driver and receiver functions within the same IC. For a four-channel driver you could consider AM26LV31E…
