UNISONIC TECHNOLOGIES CO., LTD U74HC244 CMOS IC OCTAL BUFFER AND LINE DRIVER WITH 3-STATE OUTPUT DIP-20 DESCRIPTION The U74HC244 are octal buffer and line drivers with non-inverting 3-state outputs. When n OE is High, the outputs nQ will be in the high impedance. SOP-20 FEATURES SSOP-20 * Operation voltage range: 2~6V * 3-state output * Output Drive Capability: 15 LSTTL Loads ORDERING INFORMATION Ordering Number Lead Free U74HC244L-D20-T - TSSOP-20 Halogen Free U74HC244G-D20-T U74HC244G-S20-R U74HC244G-R20-R U74HC244G-P20-R Package Packing DIP-20 SOP-20 SSOP-20 TSSOP-20 Tube Tape Reel Tape Reel Tape Reel MARKING DIP-20 www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd SOP-20 / SSOP-20 / TSSOP-20 1 of 5 QW-R502-196.D U74HC244 CMOS IC PIN CONFIGURATION 1 OE 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND 2 3 4 5 6 7 8 9 10 20 V CC 19 2 OE 18 1Y1 17 2A4 16 1Y2 15 14 13 12 11 2A3 1Y3 2A2 1Y4 2A1 FUNCTION TABLE (each gate) INPUT(nAn) ╳ H L INPUT(n OE ) H L L 1 OUTPUT(nYn) Z H L LOGIC DIAGRAM (positive logic) 1OE 2OE 1OE 1A1 1Y1 2A1 2Y1 1A2 1Y2 2A2 2Y2 1A3 1Y3 2A3 2Y3 1A4 1Y4 2A4 2Y4 Logic symbol UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 1A1 1A2 1A3 1A4 2OE 1 EN 2 4 6 8 19 18 1Y1 16 1Y2 14 1Y3 12 1Y4 EN 11 2A1 13 2A2 15 2A3 17 2A4 8 7 5 3 2Y1 1Y2 1Y3 1Y4 IEC logic symbol 2 of 5 QW-R502-196.D U74HC244 CMOS IC ABSOLUTE MAXIMUM RATINGS (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 ±35 VCC or GND Current ICC ±70 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 SYMBOL VCC VIN VOUT Input Rise or Fall Times tR, tF Operating Temperature TA UNIT V mA mA mA mA °C CONDITIONS MIN 2 0 0 TYP MAX 6 VCC VCC 1000 500 400 85 UNIT V V V ns ns ns °C TYP MAX UNIT V V V V V V V V V V V V V V V V nA μA μA pF VCC=2V VCC=4.5V VCC=6V -40 STATIC CHARACTERISTICS (TA=25°C, unless otherwise specified) PARAMETER SYMBOL High-Level Input Voltage VIH Low-Level Input Voltage VIL High-Level Output Voltage VOH Low-Level Output Voltage VOL Input Leakage Current Output OFF-State Current Quiescent Supply Current Input Capacitance II(LEAK) IOZ IQ CIN TEST CONDITIONS VCC=2V VCC=4.5V VCC=6V VCC=2V VCC=4.5V VCC=6V VCC=2V, IOH=-20μA VCC=4.5V, IOH=-20μA VCC=6V, IOH=-20μA VCC=4.5V, IOH=-6mA VCC=6V, IOH=-7.8mA VCC=2V, IOL=20μA VCC=4.5V, IOL=20μA VCC=6V, IOL=20μA VCC=4.5V, IOL=6mA VCC=6V, IOL=7.8mA VCC=6V, VIN=VCC or 0 VCC=6V,VOUT=VCC or 0,VIN=VIH or VIL VCC=6V, VIN=VCC or 0, IOUT=0 VCC=2V~6V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 1.5 3.15 4.2 0.5 1.35 1.8 1.9 4.4 5.9 3.98 5.48 1.998 4.499 5.999 4.3 5.8 0.002 0.001 0.001 0.17 0.15 3 0.1 0.1 0.1 0.26 0.26 ±100 ±0.5 8 10 3 of 5 QW-R502-196.D U74HC244 DYNAMIC CHARACTERISTICS (TA=25°C, Input: tR, tF=6ns) PARAMETER Propagation delay from input (A) to output(Y) 3-state output enable time n OE to nYn 3-state output disable time n OE to nYn CMOS IC SYMBOL tPLH /tPHL tPZH /tPZL tPHZ /tPLZ TEST CONDITIONS VCC=2V, CL=50pF VCC=2V, CL=150pF VCC=4.5V, CL=50pF VCC=4.5V, CL=150pF VCC=6V, CL=50pF VCC=6V, CL=150pF VCC=2V, CL=50pF VCC=2V, CL=150pF VCC=4.5V, CL=50pF VCC=4.5V, CL=150pF VCC=6V, CL=50pF VCC=6V, CL=150pF VCC=2V, CL=50pF VCC=4.5V, CL=50pF VCC=6V, CL=50pF MIN TYP 40 56 13 18 11 15 75 100 15 20 13 17 75 15 13 MAX 115 165 23 33 20 28 150 200 30 40 26 34 150 30 26 UNIT ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns MIN TYP 35 MAX UNIT pF OPERATING CHARACTERISTICS PARAMETER Power Dissipation Capacitance SYMBOL Cpd TEST CONDITIONS No load UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 5 QW-R502-196.D U74HC244 CMOS IC TEST CIRCUIT AND WAVEFORMS 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 5 of 5 QW-R502-196.D