74ls490.pdf part of datasheets 74ls490 74ls490.pdf, . Electronic Components Datasheets Various datasheets 74ls490.pdf text manual preview

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SN54/74LS490
DUAL DECADE COUNTER
The SN54 / 74LS490 contains a pair of high-speed 4-stage ripple counters.
Each half of the SN54 / 74LS490 has individual Clock, Master Reset and Mas-
ter Set (Preset 9) inputs. Each section counts in the 8, 4, 2, 1 BCD code.