Hi gurus,
I'd like to use the GPIO lines of the processor, and have read the warnings
about applying 5V logic levels to 3.3V logic levels. Sounds dangerous :)
I need both to drive 5V TTL devices as well as get input from 5V TTL devices.
I've been reading a little, and was curious what you all thought.
What I found was a Texas Instruments IC, SN74LVC4245A OCTAL BUS TRANSCEIVER AND
3.3-V TO 5-V SHIFTER (http://www.ti.com/lit/gpn/SN74LVC4245A) which seems to do
the job. Unfortunately, it's a 24 pin surface mount, and I don't have access
to high end breadboarding equipment for surface mount devices. A DIP does not
seem to be available. Low end breadboarding solutions like the surfboard
(http://www.capitaladvanced.com/products.htm) seem to only go up to 20 pins.
Questions:
1. What are people using to convert 5V TTL to 3.3V and vice versa?
2. Does anyone have a relatively inexpensive solution for breadboarding surface
mount components?
Many TIA,
Craig
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