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1 M74HC4520 HC4518 DUAL DECADE COUNTER HC4520 DUAL 4 BIT BINARY COUNTER 277K ST 4533709
2 M74HC4520 DUAL 4 BIT BINARY COUNTER 369K ST 2083819
3 M74HC4520B1R DUAL 4 BIT BINARY COUNTER 369K ST 2083818
4 M74HC4520M1R DUAL 4 BIT BINARY COUNTER 369K ST 2083817
5 M74HC4520RM13TR DUAL 4 BIT BINARY COUNTER 369K ST 2083816
6 M74HC4520TTR DUAL 4 BIT BINARY COUNTER 369K ST 2083815