UNISONIC TECHNOLOGIES CO., LTD U74HCT541 CMOS IC OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS DESCRIPTION The U74HCT541 is octal buffers and line drivers are with 3-state outputs and 8 channels. The 3-state control gate is a 2-input NOR. If either TSSOP-20 output-enable( OE1 or OE2 )input is high,all eight outputs are in the high-impedance state.The ‘UCTHCT541’ devices provide true data at the outputs. FEATURES * Operating Voltage Range of 4.5V to 5.5V * High-Current 3-State Outputs Interface Directly With System Bus or Can Drive Up To 15 LSTTL Loads * Low Power Consumption ICC: 4μA (Max.) * Typical tpd=12ns * ±6mA Output Drive at 5V * Low Input Current of 1uA max` * Inputs Are TTL-Voltage Compatible * Data Flow-Through Pinout(All Inputs on Opposite Side From Outputs) ORDERING INFORMATION Ordering Number Lead Free U74HCT541L-P20-T U74HCT541L-P20-R Halogen Free U74HCT541G-P20-T U74HCT541G-P20-R www.unisonic.com.tw Copyright © 2013 Unisonic Technologies Co., Ltd Package Packing TSSOP-20 TSSOP-20 Tube Tape Reel 1 of 6 QW-R502-888.A U74HCT541 CMOS IC PIN CONFIGURATION FUNCTION TABLE INPUTS( OE1 ) L L H X INPUTS( OE2 ) L L X H Note: H: HIGH Voltage Level INPUTS(A) OUTPUT(Y) L H X X L H Z Z L: LOW Voltage Level UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw Z: High Impedance X: Don’ Care 2 of 6 QW-R502-888.A U74HCT541 LOGIC SYMBOL LOGIC DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw CMOS IC 3 of 6 QW-R502-888.A U74HCT541 CMOS IC ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC -0.5 ~ 7 V Input Voltage VIN -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 TA -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. THERMAL DATA PARAMETER Junction to Ambient SYMBOL θJA SYMBOL VCC VIH VIL VIN VOUT Δt/Δv TEST CONDITIONS VCC=4.5V~5.5V VCC=4.5V~5.5V MIN 4.5 2 TYP 5 MAX 5.5 0.8 VCC VCC 500 0 0 UNIT V V V V V ns ELECTRICAL CHARACTERISTICS (TA=25°С) PARAMETER Output Voltage Low-Level Input Leakage Current SYMBOL VOL II(LEAK) 3-state Output Off-state Current IOZ Quiescent Supply Current Additional Quiescent Device Current Per Input Pin Input Capacitance ICC UNIT °C/W RECOMMENDED OPERATING CONDITIONS PARAMETER Supply Voltage High-level Input Voltage Low-level Input Voltage Input Voltage Output Voltage Input transition Rise or Fall rate RATINGS 83 ΔICC CI TEST CONDITIONS VCC=4.5V, VI=VIH or VIL, IOH=-20μA VCC=5.5V, VI=VIH or VIL, IOH=-20μA VCC=4.5V, VI=VIH or VIL, IOH=-6mA VCC=4.5V, VI=VIH or VIL, IOL=20μA VCC=5.5V, VI=VIH or VIL, IOH=20μA VCC=4.5V, VI=VIH or VIL, IOL=6mA VCC=5.5V, VIN= VCC or GND VCC=5.5V, VOUT= VCC or GND, VI=VIH or VIL VCC=5.5V, VIN=VCC or GND, IOUT=0 VCC=5.5V, One input at 0.5V or 2.4V Other inputs at 0 or VCC VCC=4.5V~5.5V MIN 4.4 5.4 3.98 TYP MAX 4.499 5.499 4.3 0.001 0.1 0.001 0.1 0.17 0.26 ±0.1 ±100 ±0.01 UNIT V nA ±0.5 μA 4 μA 1.4 2.4 mA 3 10 pF TYP 13 13 21 19 19 18 8 7 MAX 23 21 30 27 30 27 12 11 UNIT SWITCHING CHARACTERISTICS(TA=25°С,CL=50pF) PARAMETER SYMBOL From A to Y tPLH/tPHL From OE to Y tPZL/tPZH From OE to Y tPLZ/tPHZ Y tt TEST CONDITIONS VCC=4.5V VCC=5.5V VCC=4.5V VCC=5.5V VCC=4.5V VCC=5.5V VCC=4.5V VCC=5.5V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN ns ns ns ns 4 of 6 QW-R502-888.A U74HCT541 CMOS IC SWITCHING CHARACTERISTICS(TA=25°С,CL=150pF) PARAMETER SYMBOL From A to Y tPLH/tPHL From OE to Y tPZL/tPZH Y tt TEST CONDITIONS VCC=4.5V VCC=5.5V VCC=4.5V VCC=5.5V VCC=4.5V VCC=5.5V MIN TYP 20 19 26 25 17 14 MAX 33 30 40 36 42 38 UNIT TYP MAX UNIT ns ns ns OPERATING CHARACTERISTICS(TA=25°С) PARAMETER Power Dissipation Capacitance Per buffer/driver SYMBOL CPD TEST CONDITIONS No Load UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 35 pF 5 of 6 QW-R502-888.A U74HCT541 CMOS IC TEST CIRCUIT AND WAVEFORMS VIN Input OE VIN Input A 50% 50% tPLH tPHL 0V 90% 50% 10% Output tPLH tr 50% 50% tPZL tPLZ VCC Output 50% 90% 50% 10% tf 0V VOH tPZH 10% VOL tPHZ VOH VOL Output 50% 90% 0V Notes: 1. CL includes probe and test-fixture capacitance. 2. 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-R502-888.A