Jim, IDT is probably the most popular FIFO vendor though the others
mentioned in the article and Quality Semiconductor, have compatible
products. Typical access times are 12-15ns.

   - Tom

At 04:36 AM 12/17/97 -0800, you wrote:
>i'm interested in making/buying this analyzer.  It looks like
>a good one at the right price.  what access time does the fifo have
>to be to capture the data at 20mhz rate?  Is 50ns enough?  How can
>I easily get a single fifo at the right price?  has anyone found
>out which brand of fifo is best(AM7203,IDT7203 or LH540203) if
>someone has a kit, i'd like to buy.  looks like the sclk and the
>*reset should be buffered tho.   to capture 2k bytes at a 20mhz
>rate then analyze thru the PC parallel port, sounds like something
>i could use.
>
>>To all,
>>        I just picked up the December issue of Circuit Cellar,
>>which contains a wonderful article from Francis Deck explaining
>>his design for a very inexpensive LPT based-high speed logic
>>analyzer. .........
>
>