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CD74HC4511: Total Current Drive Capability

Intellectual 575 points

Replies: 2

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Part Number: CD74HC4511

With the IC powered @6V, how much current powered @6V can the CD74HC4511 source to a 7 segment display overall? Can it source 70mA to the display for "8" or not?

  • The absolute maximum ratings limit the overall current to 50 mA.

    If you really need 10 mA per segment (which is unlikely with modern displays), you could add a stronger buffer like the SN74LV244A.

  • In reply to Clemens Ladisch:

    This answered my question.  Thank you!

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