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SN74AHC74PWE4 SN74AHC74PWG4 SN74AHC74PWLE SN74AHC74PWR SN74AHC74PWR IC SN74AHC74PWR/TI SN74AHC74PWRG4 SN74AHC74PWR-P SN74AHC74PW-T SN74AHC74QDR