UNISONIC TECHNOLOGIES CO., LTD U74LVC245 CMOS IC OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS DESCRIPTION The U74LVC245 is designed for the communication between data buses asynchronously. While the direction-control(DIR) is high, data transmits from the A bus to the B bus. Data transmits from the B bus to the A bus if DIR is low. The output-enable( OE ) will isolate the device from the buses when high voltage is applied on it. FEATURES * Operate From 1.65V to 3.6V * Input Accept Voltages to 5.5V * Partial-Power-Down Mode Operation ORDERING INFORMATION Ordering Number Lead Free U74LVC245L-D20-T U74LVC245L-S20-T U74LVC245L-S20-R U74LVC245L-P20-T U74LVC245L-P20-R Halogen Free U74LVC245G-D20-T U74LVC245G-S20-T U74LVC245G-S20-R U74LVC245G-P20-T U74LVC245G-P20-R Package Packing DIP-20 SOP-20 SOP-20 TSSOP-20 TSSOP-20 Tube Tube Tape Reel Tube Tape Reel MARKING INFORMATION PACKAGE MARKING DIP-20/SOP-20/TSSOP-20 www.unisonic.com.tw Copyright © 2014 Unisonic Technologies Co., Ltd 1 of 6 QW-R502-176.D U74LVC245 CMOS IC PIN CONFIGURATION DIR A1 A2 A3 A4 A5 A6 A7 A8 GND 1 2 3 4 5 6 7 8 9 10 16 15 14 13 12 11 V CC OE B1 B2 B3 B4 B5 B6 B7 B8 FUNCTION TABLE (each gate) INPUT 20 19 18 17 OE DIR H L L × H L FUNCTION Isolation Transmit data from A bus to B bus Transmit data from B bus to A bus LOGIC DIAGRAM (positive logic) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R502-176.D U74LVC245 CMOS IC ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC -0.5~6.5 V Input Voltage VIN -0.5~ 6.5 V -0.5~6.5 Voltage Applied To Output In High-Impedance or Power-off State V VOUT Voltage Applied to Output In High or Low State -0.5~VCC+0.5 Input Clamp Current IIK -50 mA Output Clamp Current IOK -50 mA Output Current IOUT ±50 mA VCC or GND Current ICC ±100 mA Operating Temperature TOPR -40 ~ +85 °C 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 SYMBOL Supply Voltage VCC Input Voltage High-Level VIH Input Voltage Low-Level VIL Input Voltage Output Voltage TEST CONDITIONS Operating Data retention only VCC = 1.65 V to 1.95 V VCC = 2.3 V to 2.7 V VCC = 2.7 V to 3.6 V VCC = 1.65 V to 1.95 V VCC = 2.3 V to 2.7 V VCC = 2.7 V to 3.6 V VIN VOUT MIN 1.65 1.5 TYP MAX 3.6 UNIT V 0.65×VCC V 1.7 2 0.35×VCC 0.7 0.8 5.5 VCC 0 0 V V V THERMAL DATA PARAMETER Junction to Ambient DIP-20 SOP-20 TSSOP-20 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw SYMB OL RATINGS UNIT θJA 69 58 83 °C /W 3 of 6 QW-R502-176.D U74LVC245 ELECTRICAL CHARACTERISTICS PARAMETER Output Voltage High-Level Output Voltage Low-Level Input Leakage Current Power OFF Leakage Current Input Leakage Current (For I/O Ports) Quiescent Supply Current Additional Quiescent Supply Current Input Capacitance CMOS IC SYMBOL VOH VOL II(LEAK) IOFF IOZ IQ IQ CIN MIN TYP VCC-0.2 1.29 1.9 2.2 2.4 2.3 MAX UNIT V 0.1 0.24 0.3 0.4 0.55 ±1 ±1 uA uA VCC=3.6V, VOUT= 0~5.5V ±1 uA VCC=3.6V,VIN =VCC or GND IOUT= 0 VCC=3.6V, 3.6V≦ VIN≦5.5V, IOUT=0 VCC=2.7V to 3.6V, One input at VCC -0.6V, Other inputs at VCC or GND VCC=3.3V, VIN = VCC or GND 1 1 500 4 V uA uA pF SWITCHING CHARACTERISTICS PARAMETER SYMBOL From A to Y or From B to A tPLH/tPHL From OE to A or B tPZL/tPZH From OE A to A or B tPLZ/tPHZ TEST CONDITIONS VCC=1.65V to 3.6V, IOH = -100uA VCC=1.65V, IOH= –4mA VCC=2.3V, IOH = –8mA VCC=2.7V, IOH = –12mA VCC=3V, IOH= –12mA VCC=3V, IOH= –24mA VCC=1.65V to 3.6V, IOL= 100uA VCC=1.65V, IOL= 4mA VCC=2.3V, IOL= 8mA VCC=2.7V, IOL= 12mA VCC=3V, IOL= 24mA VCC=3.6V, VIN= 5.5 V or GND VCC =0V, VIN or VOUT=5.5V TEST CONDITIONS VCC=1.8V ± 0.15V VCC=2.5V ± 0.2V VCC=2.7V VCC=3.3V ± 0.3V VCC=1.8V ± 0.15V VCC=2.5V ± 0.2V VCC=2.7V VCC=3.3V ± 0.3V VCC=1.8V ± 0.15V VCC=2.5V ± 0.2V VCC=2.7V VCC=3.3V ± 0.3V MIN 1 1 1 1.5 1 1 1 1.5 1 1 1 1.7 TYP 6 3.9 4.2 3.8 7 4.5 5.4 4.4 7.8 4 4.4 4.1 MAX 12.2 7.8 7.1 6.1 14.8 10 9.3 8.3 16.5 9 8.3 7.3 UNIT ns ns ns ns ns ns ns ns ns ns ns ns MIN TYP MAX UNIT OPERATING CHARACTERISTICS PARAMETER Power Dissipation Capacitance SYMBOL CPD TEST CONDITIONS OE =0, f=10MHZ, VCC=1.8V 42 pF OE =0, f=10MHZ, VCC=2.5V 43 pF OE =0, f=10MHZ, VCC=3.3V 45 pF OE =1, f=10MHZ, VCC=1.8V 1 pF OE =1, f=10MHZ, VCC=2.5V 1 pF OE =1, f=10MHZ, VCC=3.3V 2 pF UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 6 QW-R502-176.D U74LVC245 CMOS IC TEST CIRCUIT AND WAVEFORMS VCC VIN tR/tF VM V△ CL RL 1.8V ±0.15V 2.5V ±0.2V 2.7 V 3.3V ±0.3V VCC VCC 2.7 V 2.7 V ≤2ns ≤2ns ≤2.5ns ≤2.5ns VCC/2 VCC/2 1.5V 1.5V 0.15V 0.15V 0.3V 0.3V 30 PF 30 PF 50 PF 50 PF 1 KΩ 500Ω 500Ω 500Ω tPLH/tPHL OPEN OPEN OPEN OPEN VEXT tPZH/tPHZ GND GND GND GND tPZL/tPLZ 2*VCC 2*VCC 6V 6V Fig-1 Load circuitry Fig-2 Propagation delay waves UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 6 QW-R502-176.D U74LVC245 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. 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-R502-176.D