74VHC240MTRIC INVERTER DUAL 4-INPUT 20SOIC|STMICROELECTRONICS|Lead All|RoHS Mixed SN74AHC240DWR 74VHC240MTRIC INVERTER DUAL 4-INPUT 20SOIC|STMICROELECTRONICS (VA)|Lead All|RoHS Mixed SN74AHC240DWR