UNISONIC TECHNOLOGIES CO., LTD U74AHC20 CMOS IC DUAL 4-INPUT NAND GATES DESCRIPTION The U74AHC20 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: * Low power dissipation: * ±8mA output drive at 5V 2~5.5V ICC=2μA (Max.) ORDERING INFORMATION Ordering Number U74AHC20G-S14-R U74AHC20G-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-R126-011.A U74AHC20 PIN CONFIGURATION 1A 1 14 VCC 1B 2 13 2D NC 3 12 2C 1C 4 11 NC 1D 5 10 2B 1Y 6 9 2A GND 7 8 2Y FUNCTION TABLE (each gate) INPUT(A) H L X X X CMOS IC INPUT(B) H X L X X INPUT(C) H X X L X INPUT(D) H X X X L OUTPUT(Y) L H H H H LOGIC DIAGRAM (positive logic) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 4 QW-R126-011.A U74AHC20 CMOS IC ABSOLUTE MAXIMUM RATING (TA = 25°С, unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC -0.5~7 V Input Clamp Current(VI<0) IIK -20 mA Output Clamp Current(VO<0 or VO>VCC) IOK ±20 mA Output Current IOUT ±25 mA VCC or GND Current ICC ±50 mA Storage Temperature TSTG -65 ~ +150 °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 PARAMETER SYMBOL VCC VIN VOUT Supply Voltage Input Voltage Output Voltage Input Transition Rise or Fall Rate △t/△V Operating Temperature TYP MAX 5.5 Vcc VCC 100 20 85 UNIT V V V ns ns °C TYP MAX 0.1 0.1 0.1 0.36 0.36 ±0.1 2 4 UNIT V V V V V V V V V V V V V V V V uA µA pF TYP 6.2 8.7 4.5 5.8 MAX 8.8 12.3 5.9 7.9 UNIT ns ns ns ns TYP 18 MAX UNIT pF VCC=3V±0.3V VCC=5V±0.5V TA SYMBOL High-Level Input Voltage VIH Low-Level Input Voltage VIL High-Level Output Voltage VOH Low-Level Output Voltage VOL Input Leakage Current Quiescent Supply Current Input Capacitance II(LEAK) ICC CIN -40 TEST CONDITIONS VCC= 2 V VCC= 3V VCC= 5.5 V VCC= 2 V VCC= 3V VCC= 5.5 V VCC= 2V, IOH = 50µA VCC= 3V, IOH = 50µA VCC= 4.5V, IOH =50µA VCC= 3V, IOH = 4mA VCC= 4.5V, IOH = 8mA VCC= 2V, IOH = 50µA VCC= 3V, IOH = 50µA VCC= 4.5V, IOH =50µA VCC= 3V, IOH = 4mA VCC= 4.5V, IOH = 8mA VCC= 6V ,VIN = VCC or GND VCC= 5.5V, VIN = VCC or GND, IOUT = 0 VCC=5V MIN 1.5 2.1 3.85 0.5 0.9 1.65 1.9 2.9 4.4 2.58 3.94 DYNAMIC CHARACTERISTICS ( Input: tR=tF=3ns, 25°C, unless otherwise specified ) PARAMETER Propagation delay from input (A ,B,C,D) to output(Y) MIN 2 0 0 STATIC CHARACTERISTICS (TA = 25°С, unless otherwise specified) PARAMETER tR, tF CONDITIONS SYMBOL tPLH tPHL TEST CONDITION CL=15pF VCC=3.3±0.3V CL=50pF CL=15pF VCC=5±0.5V CL=50pF MIN OPERATING CHARACTERISTICS (TA=25°С, unless otherwise specified) PARAMETER SYMBOL TEST CONDITION Power Dissipation Capacitance Cpd No load, f=1MHz UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 3 of 4 QW-R126-011.A U74AHC20 CMOS IC TEST CIRCUIT AND WAVEFORMS Output CL (Note) Note : CL includes probe and jig capacitance. UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 4 QW-R126-011.A