ProEngineer said:Zasto, that sure is a Messy (and expensive) way to convert logic levels - I guess that's what you do when you live in a 'Messy Corner'. There's so many better ways to do that.
Since the there is no 'PIC16F877A' I assume the OP meant "PIC16F877" or "PIC16F887A" both of which which operate down to 2V. In this case they can use a lower power supply voltage.
you will have inverted Rx ant Tx signals (every MAX is inverter).pic16f877a using RX & TX in portc connected to max 232 then to voltage translator from 5 V to 3.3 V then to RX & TX of telit GM862
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