dick_freebird
Advanced Member level 7
At the higher data rates I recommend you move to the
LVDS standard, for which there are CMOS<>LVDS chips
for almost any supply voltage you'd like (at least, from
1.8V through 5V). A transmitter at one end (say, 5V),
a 100-ohm differential wire pair and a receiver at the
other (say, 3.3V).
I have found in some ASIC designs that 80MHz with a
"5mA" CMOS driver and 10pF load is going to give pretty
poor (and PVT-variable) waveshape.
LVDS standard, for which there are CMOS<>LVDS chips
for almost any supply voltage you'd like (at least, from
1.8V through 5V). A transmitter at one end (say, 5V),
a 100-ohm differential wire pair and a receiver at the
other (say, 3.3V).
I have found in some ASIC designs that 80MHz with a
"5mA" CMOS driver and 10pF load is going to give pretty
poor (and PVT-variable) waveshape.