Hi All,

I am about to embark on an SD Card project which will involve mixing 3.3 and 5v signals.

A 74LCX245 has been recommended which looks perfect (Logic Converter Mini Board) except I would rather have a quad version.

Not being an expert on datasheets I am having trouble matching the features of this chip with a possible 4 port "cousin".

Can anyone help?

Best Wishes

Mark

Generally, standard logic parts are not built in multiple versions since the large number of I/Os would require a big and expensive package. Standard logic is seldom found in packages larger than about 28 pins.

The 74LCX16245 is the 16 bit version. 48 pin device.
http://www.fairchildsemi.com/ds/74/74LCX16245.pdf

Bill,

The 245 only converts one direction at a time.

Is that a problem for an SD Card project?

Mark