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LED with built-in FF?

  1. Nov 1, 2006 #1
    Does anyone know if there is such a thing?
    I need a bar-graph LED with a FF built-in. The only ones I could find on digikey is a regular 10-diode LED, but I need something that would latch or hold that value until the enable changes.... I could use a regular one in combination with a D-FF, but it would be nice to have something internal instead.

    Thanks in advance...
     
  2. jcsd
  3. Nov 1, 2006 #2

    berkeman

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    Staff: Mentor

    I've see LEDs with built-in resistors, and LED displays with built-in latches, but not individual LEDs or bar graphs with built-in latches. I don't think there's much demand for that function.
     
  4. Nov 1, 2006 #3
    I guess LED display with a built-in latch might work.... Do you happen to know a part-number or what key-word I should search for to find it?
    Thanks, berkeman
     
  5. Nov 1, 2006 #4

    berkeman

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    Staff: Mentor

    The old HP HDSP-07xx and -08xx and -09xx hex displays had a built-in decoder/driver/memory feature (another vendor makes them now). Just go to Digikey.com and do a search on HDSP-0, to get a list of the ones they carry. They're dang expensive though, so that may motivate you to brew your own with separate logic after all.
     
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