UNISONIC TECHNOLOGIES CO., LTD U74HCT20 CMOS IC 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 ORDERING INFORMATION Ordering Number Lead Free U74HCT20L-P14-T U74HCT20L-P14-R Halogen Free U74HCT20G-P14-T U74HCT20G-P14-R www.unisonic.com.tw Copyright © 2011 Unisonic Technologies Co., Ltd Package Packing TSSOP-14 TSSOP-14 Tube Tape Reel 1 of 4 QW-R502-657.A U74HCT20 CMOS IC PIN CONFIGURATION 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 INPUT(A) INPUT(B) H X L X X H L X X X 1A INPUT(C) INPUT(D) OUTPUT(Y) H X X L X H X X X L L H H H H LOGIC DIAGRAM (positive logic) 1A 1B 1C 1D 1 2 4 5 6 1Y 2A 9 10 2B 12 2C 2D 13 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 8 2Y 2 of 4 QW-R502-657.A U74HCT20 CMOS IC ABSOLUTE MAXIMUM RATING (unless otherwise specified) PARAMETER SYMBOL RATINGS Supply Voltage VCC -0.5~7 Input Clamp Current IIK -20 Output Clamp Current IOK ±20 Output Current IOUT ±25 VCC or GND Current ICC ±50 Storage Temperature TSTG -65 ~ +150 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 Supply Voltage Input Voltage Output Voltage Input Transition Rise or Fall Rate Operating Temperature High-Level Output Voltage Low-Level Output Voltage Input Leakage Current Quiescent Supply Current Additional Quiescent Supply Current Input Capacitance MIN 4.5 0 0 TYP MAX 5.5 Vcc VCC 500 85 UNIT V V V ns ℃ MIN 2.0 TYP MAX UNIT V V 4.4 3.98 4.999 4.3 0.001 0.17 ±0.1 -40 SYMBOL TEST CONDITIONS VIH VCC= 4.5V to 5.5V VIL VCC= 4.5V to 5.5V VCC= 4.5V, IO = -20µA VOH VCC= 4.5V, IO = -4mA VCC= 4.5V, IO = 20µA VOL VCC= 4.5V, IO = 4mA II(LEAK) VCC= 5.5V ,VIN = VCC or GND ICC VCC= 5.5V, VIN = VCC or GND, IO = 0 One input at VCC -2.1V, △ICC other inputs at 0 or VCC CIN VCC=4.5V~5.5V 0.8 V 0.1 0.26 ±100 2 nA µA 100 360 uA 3 10 pF TYP MAX UNIT 16 28 ns 7 15 ns V DYNAMIC CHARACTERISTICS (TA=25°С, Input: tR=tF=6ns, unless otherwise specified ) PARAMETER Propagation delay from Input(A or B) to Output(Y) Output Transition Time SYMBOL CONDITIONS VCC VIN VOUT tR, tF VCC=4.5V TA STATIC CHARACTERISTICS (TA = 25°С) PARAMETER High-Level Input Voltage Low-Level Input Voltage UNIT V mA mA mA mA ℃ SYMBOL TEST CONDITIONS MIN tPLH, tPHL VCC=4.5V, CL=50pF tt VCC=4.5V, CL=50pF OPERATING CHARACTERISTICS (TA=25°С, unless otherwise specified) PARAMETER SYMBOL TEST CONDITION Power Dissipation Capacitance CPD No Load UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw RATINGS 38 UNIT pF 3 of 4 QW-R502-657.A U74HCT20 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-R502-657.A