Re: Are 8255s operating at 3.3V available?

Jonathan Kirwan wrote:
On 17 Apr 2006 00:07:40 -0700, "VSP" <vijayandra.poojari@xxxxxxxxx>
wrote:


Has anyone used an 8255 which can operate at 3.3V ? Is such a device
even available? Or could some one suggest some other chips which can
provide the functionality similar to 8255 but can work at 3.3V?

There are many choices, none of them a 8255.

The distributed, low update speed, cascadeable,
cpu pin saving solution is a set of 74HC595,
serial to parallel shift registers. As many
times 8 bits connected to the SPI port.

The flexible compact solution is a CPLD.
A MAX3064 with 64 flip flopsin a TQFP44 case
gives plenty of flexibility for simple solutions.

The blunt, distributed and fast solution is a
set of 74HC574 latches.

Rene
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