14 Jun
2012
14 Jun
'12
10:13 p.m.
On 14 Jun 2012 at 17:30, Dave McGuire wrote:
Just to jump in...I don't know about machines,
but at least one of
the
later MAX232 family chips can be configured to do this. It's a
power-saving measure; it shuts down the charge pump. Note that this
is not the "MAX232", but one of that family, which comprises upwards
of thirty completely different chips now.
Linear Technology EIA transceivers ; e.g. LT1080--pretty much have
always had that feature--with an ON/OFF pin.
--Chuck