David BrownFor the current laser power I need a clock out frequency of 2MHz, but i've run a test using TINA simulation software at 10MHz, the transient analysis look reasonable (to my untrained eyes.
I've also been running some test on the write out speed from the raspberry pi, which is looking reasonable through the 600mm ribbon cable. I need a data rate of 500kHz (2us) pulse width.
In other news the IDT FIFO chips i bought off ebay appear to be fakes, they appear to work, but response speed is dire and they are missing the IDT logo, which should have been a big red flag, but I bought them right at the beginning, so another learning experience.
[Followup - ran a full test on the dodgy chips, write depth of 8192 matches but the read out flag is non-responsive, they have also been over-coated, see here for many good examples; Components Technology Institute counterfit examples]
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What kind of FIFO do you need ?
Are you sure? yes | no
I've been designing around the IDT 720 series, 9bit FIFOs, fake part was marked 7205L15J but mouser has the 7203L12JG which has sufficient depth for ~$10 so i'll probably go with that.
Are you sure? yes | no
If you found a suitable reference, fine, I have pulls and samples for a variety of characteristics otherwise. Oh and some more of these for good measure:
http://www.ebay.com/itm/20-ST-MK45H03K-FIFO-512x9-80ns-5V-EMPTY-FULL-FLAGS-EXPANDABLE-PLCC-32-SMD-SMT-/271857152435
Are you sure? yes | no