I am trying to find out how much current a 5V MAX485 RS-485 transceiver will draw when driving a DMX universe of about 5-8 RGB LED floods.
I have a hard time understanding the MAX485 data sheet where it discusses the driver current. https://datasheets.maximintegrated.com/en/ds/MAX1487-MAX491.pdf
My plan is to use 6-8 DMX outputs controlled by the Teensy 4.1 serial outs, using Shawn Silverman's TeensyDMX library.
The circuit will have an external power input for the optocouplers and the MAX485's but to know how much current it needs to supply I need to know about the MAX485's draw.
Maybe someone can help me understand this issue.
Thanks
David
I have a hard time understanding the MAX485 data sheet where it discusses the driver current. https://datasheets.maximintegrated.com/en/ds/MAX1487-MAX491.pdf
My plan is to use 6-8 DMX outputs controlled by the Teensy 4.1 serial outs, using Shawn Silverman's TeensyDMX library.
The circuit will have an external power input for the optocouplers and the MAX485's but to know how much current it needs to supply I need to know about the MAX485's draw.
Maybe someone can help me understand this issue.
Thanks
David