54/7490A 54LS/74LS90 DECADE COUNTER 90 CONNECTION.
2SC5490A - RF Transistor
DM5490A - (DM5490A / DM5493A) Decade and Binary Counters
DM5493A - (DM5490A / DM5493A) Decade and Binary Counters
SFS5490A-LF - Fixed Frequency Synthesizer
SN5490A - DIVIDE-BY-TWELVE AND BINARY COUNTERS
5490A - DECADE COUNTER