9 Nov
2011
9 Nov
'11
8:35 a.m.
On Nov 9, 2011, at 11:08 AM, Scott Kevill wrote:
It's just a bunch of FETs. There's a good app note by TI on using them to convert
both directions, actually. IIRC it uses an open-collector arrangement of sorts, so
it's not super-fast (though that depends on what your metric for fast is), but
it's great for I2C level conversion. Not bad for other stuff, either.
- Dave
I'm
anxious to build a PCB that is based around a pair of these
http://www.ti.com/product/sn74cbtd3384
10-Bit FET Bus Switches With Level Shifting
for a level conversion app.
I sampled some, although there was only the .635 pitch 24 SSOP/QSOP version available.
I vaguely remember looking at that series. They're 5V tolerant, but won't output
5V from 3.3V, right?