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_ TTL
TYPES SNS4390, SNS4LS39D, SN54393. SN54LS393, SN74390, SN74LS390. SN74393, SN74LS393 DUAL 4-BIT DECADE AND BlNAltY COUNTERS
SN S4390, SN 54LS390 . . . J O R W P A C K A G E SN 74390, SN 74LS