UNISONIC TECHNOLOGIES CO., LTD U74HC541 CMOS IC OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS DESCRIPTION The U74HC541 is a octal buffers and line drivers with 3-state outputs and 8 channels. TSSOP-20 FEATURES * Operate from 2V to 6V * Max tPD of 23ns at 4.5 V(CL=50pF) * Typical VIH< 3.15V at VCC=4.5V, Ta=25°C * Typical VIL> 1.35V at VCC=4.5V, Ta=25°C ORDERING INFORMATION Ordering Number U74HC541G-P20-R U74HC541G-P20-T Package TSSOP-20 TSSOP-20 www.unisonic.com.tw Copyright © 2010 Unisonic Technologies Co., Ltd Packing Tape Reel Tube 1 of 6 QW-R502-395.A U74HC541 CMOS IC PIN CONFIGURATION OE1 1 20 VCC A1 2 19 OE2 A2 3 18 Y1 A3 4 17 Y2 A4 5 16 Y3 A5 6 15 Y4 A6 7 14 Y5 A7 8 13 Y6 A8 9 12 Y7 GND 10 11 Y8 FUNCTION TABLE INPUTS( OE1 L L H X ) INPUTS( OE2 L L X H Note: H: HIGH voltage level ) L: LOW voltage level INPUTS(A) L H X X Z: High impedance UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw OUTPUT(Y) L H Z Z X: Don’t care 2 of 6 QW-R502-395.A U74HC541 CMOS IC LOGIC SYMBOL LOGIC DIAGRAM 1 OE1 19 OE2 18 Y1 A1 2 A2 3 17 Y2 To six other channels UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 6 QW-R502-395.A U74HC541 CMOS IC ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC -0.5 ~ 7 V VCC or GND Current ICC ±70 mA Output Current IOUT ±35 mA Input Clamp Current IIK ±20 mA Output Clamp Current IOK ±20 mA Operating Temperature TOPR -40 ~ + 85 °C 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 Supply Voltage SYMBOL VCC High-Level Input Voltage VIH Low-Level Input Voltage VIL Input Voltage Output Voltage VIN VOUT Input Transition Rise or Fall Rate tR,tF TEST CONDITIONS VCC=2V VCC=4.5V VCC=6V VCC=2V VCC=4.5V VCC=6V MIN 2 1.5 3.15 4.2 TYP MAX 6 UNIT V V 0.5 1.35 1.8 VCC VCC 1000 500 400 0 0 VCC=2V VCC=4.5V VCC=6V V V V ns ELECTRICAL CHARACTERISTICS (TA=25°С) PARAMETER Output Voltage High-Level SYMBOL VOH Output Voltage Low-Level VOL Input Leakage Current Output Off-state Current Quiescent Supply Current Input Capacitance II(LEAK) IOZ IQ CIN TEST CONDITIONS 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 GND VCC=6V, VOUT= VCC or GND VCC=6V, VIN=VCC or GND, IOUT=0 VCC=2V to 6V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 1.9 4.4 5.9 3.98 5.48 TYP 1.998 4.499 5.999 4.3 5.8 0.002 0.001 0.001 0.17 0.15 ±0.1 ±0.01 3 MAX UNIT V 0.1 0.1 V 0.1 0.26 0.26 ±100 nA ±0.5 μA 8 μA 10 pF 4 of 6 QW-R502-395.A U74HC541 CMOS IC SWITCHING CHARACTERISTICS (TA=25°С,CL=50pF) PARAMETER SYMBOL Propagation Delay From Input (A) to Output (Y) tPLH/tPHL Output Enable Time From OE to Y tPZL/tPZH Output Disable Time From OE to Y tPLZ/tPHZ Output Y tt MIN TYP 40 12 10 80 17 15 40 18 17 28 8 6 MAX 115 23 20 150 30 26 150 30 26 60 12 10 UNIT TYP 65 16 14 100 20 17 45 17 13 MAX 165 33 28 200 40 34 210 42 36 UNIT TYP 35 MAX UNIT pF ns ns ns ns SWITCHING CHARACTERISTICS (TA=25°С,CL=150pF) PARAMETER SYMBOL Propagation Delay From Input (A) to Output (Y) tPLH/tPHL Output Enable Time From OE to Y tPZL/tPZH Output Y TEST CONDITIONS VCC=2V VCC=4.5V VCC=6V VCC=2V VCC=4.5V VCC=6V VCC=2V VCC=4.5V VCC=6V VCC=2V VCC=4.5V VCC=6V tt TEST CONDITIONS VCC=2V VCC=4.5V VCC=6V VCC=2V VCC=4.5V VCC=6V VCC=2V VCC=4.5V VCC=6V MIN ns ns ns OPERATING CHARACTERISTICS(TA=25°С) PARAMETER Power Dissipation Capacitance SYMBOL TEST CONDITIONS CPD No Load UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 5 of 6 QW-R502-395.A U74HC541 CMOS IC TEST CIRCUIT AND WAVEFORMS Parameter tPZH ten tPZL tPZH tdis tPZL tPD or tt t PLH RL CL 1KΩ 50 pF or 150 pF 1KΩ 50 pF — 50 pF or 150 pF t PZL t PLZ t PZH t PHZ t PHL Note: CL includes probe and jig capacitance. All input pulses are supplied by generators having the following characteristics: PRR ≤1MHz, Zo = 50Ω, tr=6ns, tf=6ns. 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 6 of 6 QW-R502-395.A