pdcampa
Newbie level 2
Hi all, there's anybody simulated the MAC487 IC in proteus 7.1?
I'have some problem when I try to simulate the serial communication betwin two MAX487. When the master is transmitting the slave receive the correct data, but when the master stops (waiting for e response) the slave receive all zeros.
Why the MAX487 in receiving mode detect a low level when the line (differential transmition lines A and B) is floating?
Also I try to polarize the transmition line with a 560ohm pullup on Line A and a 560ohm pulldown on line B (and the two 120ohm adapter resistors in parallel of A and B at the two ends of transmition line). I try both digital and analog resistor but the issue persist.
Some ideas
I'have some problem when I try to simulate the serial communication betwin two MAX487. When the master is transmitting the slave receive the correct data, but when the master stops (waiting for e response) the slave receive all zeros.
Why the MAX487 in receiving mode detect a low level when the line (differential transmition lines A and B) is floating?
Also I try to polarize the transmition line with a 560ohm pullup on Line A and a 560ohm pulldown on line B (and the two 120ohm adapter resistors in parallel of A and B at the two ends of transmition line). I try both digital and analog resistor but the issue persist.
Some ideas