U74HCT20

UNISONIC TECHNOLOGIES CO., LTD U74HCT20 DUAL 4-INPUT NAND GATES „ DESCRIPTION The U74HCT20 contains two independent 4-input NAND 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 * Low Quiescent Current: ICC=2μA(Max) * High Speed: tPD=16ns @ 4.5V(Typ) * Low Input Current: 100nA Max * Inputs are TTL Voltage Compatiabel CMOS IC „ ORDERING INFORMATION Ordering Number Lead Free Halogen Free U74HCT20L-P14-T U74HCT20G-P14-T U74HCT20L-P14-R U74HCT20G-P14-R Package TSSOP-14 TSSOP-14 Packing Tube Tape Reel www.unisonic.com.tw Copyright © 2011 Unisonic Technologies Co., Ltd 1 of 4 QW-R502-657.A U74HCT20 „ 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 INPUT(A) H L X X X INPUT(B) H X L X X INPUT(C) H X X L X INPUT(D) H X X X L „ LOGIC DIAGRAM (positive logic) 1A 1B 1 2 1C 1D 4 5 6 1Y 2A 2B 2C 2D 9 10 12 13 8 2Y CMOS IC OUTPUT(Y) L H H H H UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 4 QW-R502-657.A U74HCT20 CMOS IC „ ABSOLUTE MAXIMUM RATING (unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC -0.5~7 V Input Clamp Current Output Clamp Current IIK -20 mA IOK ±20 mA Output Current VCC or GND Current IOUT ±25 mA ICC ±50 mA Storage Temperature TSTG -65 ~ +150 ℃ Note: Absolute maximum ratings are those values beyond which the device could be...