Electronics > Projects, Designs, and Technical Stuff

Faster 74HC595

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SiliconWizard:

--- Quote from: OwO on February 14, 2020, 03:03:29 pm ---MAX9206 looks like it would do the job if I can find it for a good price (3 are needed to get 30 bits).

--- End quote ---

Yep, those are a bit pricy. Look for "deserializer" with the usual vendors and see what you get.


--- Quote from: OwO on February 14, 2020, 03:03:29 pm ---I see a lot of LVDS receiver chips for really cheap ($0.5), but need to find datasheets... Not sure if these can be used as dumb deserializers (they are usually for driving LCDs).

--- End quote ---

LVDS receiver chips in general are just the differential front-end and do not include any deserializer, hence the low cost, so don't keep your hopes high too much on those.

Benta:
Look for LVDS serializer/deserializers. Try TI, they took over a lot of the National parts.

David Hess:
Why not deserialize in two stages?  Use a very fast deserializer, perhaps made up of ECL flip-flops since they will be easier to get, to then drive multiple 74LVC595s?

chris_leyson:
You could try something like an SN65LVDS94 serdes receiver, it will give you 4:28 channel expansion and a parallel data rate of up to 68MHz. You would only need four IOs on the FPGA and a few differential LVDS drivers. EDIT: These, or similar, are often used for SDI video LVDS interfaces.

OwO:
Thanks for the suggestions, I just found a whole bunch of LVDS receiver chips that are pin compatible with the SN65LVDS94 (MS90C386, GM8284C, etc). They all have a deserialization factor of 7 and have the same bit layout, which seems to originate from the DS90CR286.
I'll probably use this one which is cheap enough and goes to 175MHz (1.2Gb/s): https://lcsc.com/product-detail/LVDS-ICs_Hangzhou-Ruimeng-Tech-MS90C386B_C231931.html

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