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SN54390, SN54LS390, SN54393, SN54LS393,
SN74390, SN74LS390, SN74393, SN74LS393
DUAL 4 BIT DECADE AND BINARY COUNTERS
OCTOBER 1976 -
S N 7 4 3 9 0 . . . N P AC K A G E
SN 74LS390
. D OR N P AC