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I need to make a simple circuit that will go low after about 200ms to work as a delayed active-lo enable line (specifically for the 74ls540/541 chip). I tried the RC circuit in the embedded image, but I realized that won't exactly pull low because there is still a resistance to the ground...
IanP, Would biasing resistors help on the transmitter rather than the receiver? I've seen examples of biasing those lines on both the transmitter and the receiver. The peripheral receives just fine, but the receiver on the other board can't be changed at this point.
kmr, I will take a look at...
I am communicating using RS422 over CAT5 at a pretty low baud rate (4800bps), but I get horrible noise if I use a cable much longer than 3 or 4 feet. I think the reason for this is that the differential pairs are not pinned to twisted pairs in the cable causing capacitance issues.
This is for...
I have a few boards setup with a sort of rs-422 / rs-485 hybrid. I have two "transmit lines" coming from a master board that are connected to the receive lines of the slave boards. Then, there are two separate lines ("receive lines") coming back into the receiver of the master board that comes...
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