FreeCalypso > hg > fc-small-hw
view bb2fc/schem+bom/74AVC4T774PW.pinout @ 28:bd7eec55ebc0
duart28: new design ideas
* added input buffers (LVC with Ioff feature) to prevent high current flow
from powered-up target into powered-down FT2232D inputs;
* added series resistors on outputs to limit current flow from powered-up
adapter into powered-down Calypso target;
* buffer IC changed from 74LVC125A to 74LVC541A.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 28 Jun 2020 22:06:24 +0000 |
parents | 0f9bdd60ce50 |
children |
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#pin name pin number DIR:1 1 DIR:2 2 A:1 3 A:2 4 A:3 5 A:4 6 DIR:3 7 DIR:4 8 OE 9 GND 10 B:4 11 B:3 12 B:2 13 B:1 14 VccB 15 VccA 16