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Common questions from engineers and buyers evaluating this part.
The 5490FMQB from National Semiconductor is a Decade Counter. Decade Counter, TTL/H/L Series, Asynchronous, Negative Edge Triggered, 3-Bit, Up Direction, TTL, CDFP14. It is used in electronic designs requiring decade counter functionality.
The 5490FMQB comes in a DFP-14 package with flat terminals. The body material is ceramic, glass-sealed; length 9.5885 mm; pin pitch 1.27 mm.
The 5490FMQB is Discontinued (obsolete). Remaining stock may be limited. Contact us for the most current availability and alternatives.
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