21 Mar
2005
21 Mar
'05
8:52 p.m.
On Mon, 21 Mar 2005 17:06:51 -0800 (PST), Eric Smith <eric at brouhaha.com> wrote:
Note that one is supposed to use 48 mA drives.
Suggested drivers are
the 7438 quad 2-input NAND buffer, or the 7406 or 7407 hex inverting
or non-inverting buffer. The 74LSxx, 74HCxx, 74HCTxx, etc.
"equivalents" are NOT acceptable, as they have significantly lower
rated drive current. Fortunately the 7406, 7407, and 7438 are still
How low? 2x?
What if one were to parallel the drivers (perhaps in piggyback manner)?
/wai-sun