4 Nov
2011
4 Nov
'11
9 p.m.
On 4 Nov 2011 at 18:53, Eric Smith wrote:
In the other direction, 3.3V CMOS outputs can directly
drive 5V chips
that have TTL-compatible inputs, but when it is necessary to drive 5V
parts that actually expect 5V CMOS input levels, the 74HCT, 74ACT, or
74ABT series is useful.
Do there exist any split supply (3.3V/5V) level converter chips in
DIP? When you're building a circuit where anybody or their cousin
can tie something to your interface, you'd like the chip most likely
to get fried by a careless user to be in an easily replaceable form.
I've got tubes and tubes of RS422 transceiver chips in DIP. I've
thought about using those on a one-off project as level shifters.
Just use one leg of the differential pair.
--Chuck