[Coco] Prototype/Breakout Board

jdaggett at gate.net jdaggett at gate.net
Sat Mar 24 20:11:08 EDT 2012


Louis

TI's SN74LVC8T245. It comes in a 24 pin package and has one VCCA pin and two VCCB 
pins along with three ground pins. You can set VCCA and VCCB to the same voltage or set 
VCCB to  a voltage that is lower than VCCA or vice versa.  VCCx operates from 1.65VDC to 
5.5VDC. 

james

james

On 24 Mar 2012 at 19:56, Louis Ciotti wrote:

> I am finally getting to working on this, and someone send me an email
> recommending a IC for use on the the address/data lines that was
> similar to the 74LS245, but allow voltage translation.  I must have
> fatfingered the delete button and cannot fine the e-mail  Can you
> please resent the info.
> 
> Now on this what are the thoughts on this?  Right now my thoughts are
> to have a small board that plugs into the cartrige slot, has
> buffereing, a ROM socket, and a 0.1" dual row header to connect a
> cable to.
> 
> of the 40-pins I am planning on breaking-out:
> 
> A0-A15
> D0-D7
> 5V
> GND
> CTS*
> Q
> CART*
> R/W*
> RESET
> 
> Lou
> 
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