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U74HC540 Dataheets PDF



Part Number U74HC540
Manufacturers Unisonic Technologies
Logo Unisonic Technologies
Description OCTAL BUFFERS AND LINE DRIVERS
Datasheet U74HC540 DatasheetU74HC540 Datasheet (PDF)

UNISONIC TECHNOLOGIES CO., LTD U74HC540 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS  DESCRIPTION The U74HC540 combines with octal buffers and line drivers with inverting 3-state outputs. The 3-state output is controlled by output enable inputs OE1 and OE2 , all eight outputs will be in high-impedance when either of the 2 inputs is applied with high voltage.  FEATURES * Operation voltage range: 2V ~ 6V * High-current 3-state outputs for bus driver * Inverting outputs  ORDERING INFOR.

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UNISONIC TECHNOLOGIES CO., LTD U74HC540 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS  DESCRIPTION The U74HC540 combines with octal buffers and line drivers with inverting 3-state outputs. The 3-state output is controlled by output enable inputs OE1 and OE2 , all eight outputs will be in high-impedance when either of the 2 inputs is applied with high voltage.  FEATURES * Operation voltage range: 2V ~ 6V * High-current 3-state outputs for bus driver * Inverting outputs  ORDERING INFORMATION Ordering Number Lead Free Halogen Free U74HC540L-D20-T U74HC540G-D20-T U74HC540L-S20-R U74HC540G-S20-R U74HC540L-P20-R U74HC540G-P20-R Package DIP-20 SOP-20 TSSOP-20 CMOS IC Packing Tube Tape Reel Tape Reel  MARKING www.unisonic.com.tw Copyright © 2023 Unisonic Technologies Co., Ltd 1 of 5 QW-R126-004.E U74HC540  PIN CONFIGURATION CMOS IC  FUNCTION TABLE (each gate) INPUT OE1 OE 2 A L L L L L H H X X X H X  LOGIC DIAGRAM (positive logic) OUTPUT Y H L Z Z UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R126-004.E U74HC540 CMOS IC  ABSOLUTE MAXIMUM RATINGS (unless otherwise specified)(Note 1) PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC -0.5~7 V Input Clamp Current IIK ±20 mA Output Clamp Current IOK ±20 mA Output Current IOUT ±35 mA VCC or GND Current ICC ±70 mA Storage Temperature TSTG -65 ~ +150 °C Note 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. 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 Transition Rise or Fall Rate tR, tF Operating Temperature TA  ELECTRICAL CHARACTERISTICS CONDITIONS VCC=2V VCC=4.5V VCC=6V MIN TYP MAX UNIT 2 5 6 V 0 VCC V 0 VCC V 0 1000 ns 0 500 ns 0 400 ns -40 +125 °C PARAMETER High-Level Input Voltage Low-Level Input Voltage High-Level Output Voltage Low-Level Output Voltage Input Leakage Current Output Leakage Current Quiescent Supply Current Propagation delay from input (A) to output(Y) SYMBOL TEST CONDITIONS VIH VIL VOH VOL II(LEAK) IO(LEAK) IQ tPLH/ tPHL 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 GND VCC=6V, VOUT=VCC or GND VCC=6V,VIN=VCC or GND, IOUT=0 VCC=2V, CL=50 pF VCC=2V, CL=150 pF VCC=4.5V, CL=50 pF VCC=4.5V, CL=150 pF VCC=6V, CL=50 pF VCC=6V, CL=150 pF TA=25°С MIN TYP MAX TA=-40~+125°С MIN TYP MAX UNIT 1.5 1.5 V 3.15 3.15 V 4.2 4.2 V 0.5 0.5 V 1.35 1.35 V 1.8 1.8 V 1.9 1.998 1.9 V 4.4 4.499 4.4 V 5.9 5.999 5.9 V 3.98 4.3 3.7 V 5.48 5.8 5.2 V 0.002 0.1 0.1 V 0.001 0.1 0.1 V 0.001 0.1 0.1 V 0.17 0.26 0.4 V 0.15 0.26 0.4 V ±0.1 ±100 ±1000 nA ±0.01 ±0.5 ±10 uA 8 80 μA 35 100 60 150 10 20 15 30 8 17 13 26 150 ns 188 ns 30 ns 38 ns 26 ns 32 ns UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 5 QW-R126-004.E U74HC540 CMOS IC  SWITCHING CHARACTERISTICS (tR, tF≤3ns) PARAMETER SYMBOL TEST CONDITIONS 3-state output enable time from OE to Yn 3-state output disable time from OE to Yn tPZH/ tPZL tPHZ/ tPLZ VCC=2V, CL=50 pF VCC=2V, CL=150 pF VCC=4.5V, CL=50 pF VCC=4.5V, CL=150 pF VCC=6V, CL=50 pF VCC=6V, CL=150 pF VCC=2V, CL=50 pF VCC=4.5V, CL=50 pF VCC=6V, CL=50 pF  OPERATING CHARACTERISTICS TA=25°С MIN TYP MAX TA=-40~+125°С MIN TYP MAX UNIT 75 150 240 ns 100 200 250 ns 15 30 48 ns 20 40 50 ns 13 26 41 ns 17 34 43 ns 40 150 240 ns 18 30 48 ns 17 26 41 ns PARAMETER Input Capacitance Power Dissipation Capacitance SYMBOL TEST CONDITIONS CIN VCC=2V~6V CPD No load, f=1MHz MIN TYP MAX UNIT 3 10 pF 35 pF UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 5 QW-R126-004.E U74HC540  TEST CIRCUIT AND WAVEFORMS Note: CL includes probe and jig capacitance. CMOS IC 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. UTC reserves the right to make changes to information published in this document, including without limitation specifications and product.


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