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TYPES SN54490, SN54LS490, SN74490, SN74LS490
DUAL 4-BIT DECADE COUNTERS
OCTOBER 1976âREVISED DECEMBER 1983
Dual Versions of Popular SN5490A, SN54LS90, SN7490A, and SN74LS90 Counters
sn54490.s
