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    Text: UNISONIC TECHNOLOGIES CO., LTD U74HCT21 CMOS IC DUAL 4-INPUT AND GATES „ DESCRIPTION The U74HCT21 contains two independent 4-input AND gates. They perform the Boolean function Y=A • B • C • D or Y=A + B + C + D in positive logic. „ FEATURES * Operation Voltage Range: 4.5V~5.5V


    Original     		U74HCT21 U74HCT21 100nA U74HCT21L-P14-T U74HCT21L-P14-R U74HCT21G-P14-T U74HCT21G-P14-R TSSOP-14 QW-R502-656 PDF