U74AHC21

UNISONIC TECHNOLOGIES CO., LTD U74AHC21 DUAL 4-INPUT AND GATES  DESCRIPTION The U74AHC21 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: * Low power dissipation: * ±8mA output drive at 5V 2~5.5V ICC=2μA (Max.) CMOS IC  ORDERING INFORMATION Ordering Number U74AHC21G-S14-R U74AHC21G-P14-R Package SOP-14 TSSOP-14 Packing Tape Reel Tape Reel  MARKING www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd 1 of 4 QW-R126-012.A U74AHC21  PIN CONFIGURATION 1A 1B NC 1C 1D 1Y GND 1 2 3 4 5 6 7 14 VCC 13 2D 12 2C 11 NC 10 2B 9 2A 8 2Y  FUNCTION TABLE (each gate) INPUT(A) H L X X X INPUT(B) H X L X X  LOGIC DIAGRAM (positive logic) INPUT(C) H X X L X INPUT(D) H X X X L CMOS IC OUTPUT(Y) H L L L L UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 4 QW-R126-012.A U74AHC21 CMOS IC  ABSOLUTE MAXIMUM RATING (unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT Supply Voltage Input Clamp Current(VI<0) VCC -0.5~7 V IIK -20 mA Output Clamp Current(VO<0 or VO>VCC) Output Current IOK IOUT ±20 mA ±25 mA VCC or GND Current Storage Temperature ICC TSTG ±50 -65 ~ +150 mA °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied.  RECOMMENDED OPERATING CONDITIONS PAR...