UNISONIC TECHNOLOGIES CO., LTD U74LVC257 CMOS IC QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS 3-STATE OUTPUTS DESCRIPTION SOP-16 The U74LVC257 is designed for 1.65V to 3.6V VCC operation. The U74LVC257 devices are designed to multiplex signals from 4-bit data sources to 4-output data lines in bus-organized systems. The 3-state outputs do not load the data lines when the output-enable ( OE ) input is at a high logic level. FEATURES * Operate From 1.65V to 3.6V * Input Accept Voltages to 5.5V * Partial-Power-Down Mode Operation * Max tpd is 4.6ns at 3.3V ORDERING INFORMATION Ordering Number U74LVC257G-S16-R Package SOP-16 Packing Tape Reel MARKING www.unisonic.com.tw Copyright © 2016 Unisonic Technologies Co., Ltd 1 of 6 QW-R126-034.A U74LVC257 CMOS IC PIN CONFIGURATION FUNCTION TABLE (each gate) INPUTS OUTPUT(Y) A B INPUT( A / B ) H X X X Z L L L X L L L H X H L H X L L L H X H H H = High voltage level；L = Low voltage level；X = Don’t care；Z = High-impedance OFF-state INPUT( OE ) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R126-034.A U74LVC257 CMOS IC LOGIC DIAGRAM (Positive Logic) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 6 QW-R126-034.A U74LVC257 CMOS IC ABSOLUTE MAXIMUM RATING PARAMETER Supply Voltage Input Voltage Output Voltage SYMBOL VCC VIN VOUT CONDITIONS Output in the high or low state Output in the power-off state RATINGS -0.5 ~ +6.5 -0.5 ~ +6.5 -0.5 ~ VCC +0.5 -0.5 ~ +6.5 UNIT V V V V Continuous VCC or GND ICC ±100 mA Current Continuous Output Current IOUT VOUT=0V ~ VCC ±50 mA Input Clamp Current IIK VIN<0V -50 mA Output Clamp Current IOK VOUT>VCC or VOUT<0V -50 mA Storage Temperature Range 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 SYMBOL Supply Voltage VCC Input Voltage Output Voltage Operating Temperature Input Transition Rise or Fall Rate VIN VOUT TA TEST CONDITIONS Operating Data retention only MIN 1.65 1.5 0 0 -40 0 TYP MAX 3.6 VCC=1.65V ~ 2.7V VCC=2.7V ~ 3.6V 0 Note: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. ∆t/∆v 5.5 VCC 85 20 10 UNIT V V V V °C ns/V ns/V ELECTRICAL CHARACTERISTICS (TA =25°C , unless otherwise specified) PARAMETER SYMBOL High-level Input Voltage VIH Low-level Input Voltage VIL High-Level Output Voltage Low-Level Output Voltage Input Leakage Current Power OFF Leakage Current OFF-state output current VOH VOL II(LEAK) Ioff IOZ TEST CONDITIONS VCC=1.8V±0.15V VCC=2.5V±0.2V VCC=3.3V±0.3V VCC=1.8V±0.15V VCC=2.5V±0.2V VCC=3.3V±0.3V VCC=1.65V ~ 3.6V, IOH=-100μA VCC=1.65V, IOH=-4mA VCC=2.3V, IOH=-8mA VCC=2.7V, IOH=-12mA IOH=-12mA VCC=3.0V IOH=-24mA VCC=1.65V ~ 3.6V, IOH=100μA VCC=1.65V, IOH=4mA VCC=2.3V, IOH=8mA VCC=2.7V, IOH=12mA VCC=3.0V, IOH=24mA VCC=3.6V, VIN=5.5V or GND VCC=0V, VIN or VOUT=5.5V VIN = VIH or VIL, VCC=3.6V VOUT=VCC or GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 0.65×VCC 1.7 2 TYP MAX 0.2 0.45 0.7 0.4 0.55 ±5 ±10 UNIT V V V V V V V V V V V V V V V V V μA μA ±10 μA 0.35×VCC 0.7 0.8 VCC-0.2 1.2 1.7 2.2 2.4 2.2 4 of 6 QW-R126-034.A U74LVC257 ELECTRICAL CHARACTERISTICS (Cont.) PARAMETER Quiescent Supply Current Additional Quiescent Supply Current Per Input Pin Input Capacitance Output Capacitance CMOS IC SYMBOL ICC ∆ICC CI CO MIN TYP MAX UNIT 10 μA 500 μA 5.0 5.0 pF pF SWITCHING CHARACTERISTICS (TA =25°C , unless otherwise specified) PARAMETER SYMBOL Propagation delay from input (A or B) to output(Y) tPD Propagation delay from input ( A / B ) to output(Y) Propagation delay from input ( OE ) to output(Y) Propagation delay from input ( OE ) to output(Y) TEST CONDITIONS VCC=3.6V, VIN=VCC or GND, IOUT=0A VCC=2.7V~3.6V, One input at VCC-0.6V, Other inputs at VCC or GND VCC= 3.3V, VIN= VCC or GND VCC= 3.3V, VIN= VCC or GND ten ten tdis TEST CONDITIONS VCC=1.8V±0.15V CL=30pF VCC=2.5V±0.2V VCC=2.7V CL=50pF VCC=3.3V±0.3V VCC=1.8V±0.15V CL=30pF VCC=2.5V±0.2V VCC=2.7V CL=50pF VCC=3.3V±0.3V VCC=1.8V±0.15V CL=30pF VCC=2.5V±0.2V VCC=2.7V CL=50pF VCC=3.3V±0.3V VCC=1.8V±0.15V CL=30pF VCC=2.5V±0.2V VCC=2.7V CL=50pF VCC=3.3V±0.3V MIN 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 TYP MAX 13.5 7.4 5.4 4.6 15.6 9.5 7.5 6.4 14.6 8.7 6.7 5.6 15.4 6.7 4.7 4.3 UNIT ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns MAX UNIT pF pF pF OPERATING CHARACTERISTICS (f=10MHZ, TA =25°C , unless otherwise specified) PARAMETER Power Dissipation Capacitance SYMBOL CPD TEST CONDITIONS VCC=1.8V±0.15V VCC=2.5V±0.2V VCC=3.3V±0.3V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN TYP 13.5 14.5 15.5 5 of 6 QW-R126-034.A U74LVC257 CMOS IC TEST CIRCUIT AND WAVEFORMS INPUTS VCC 1.8V±0.15V 2.5V±0.2V 2.7V 3.3V±0.3V VIN VCC VCC 2.7V 2.7V tR/tF ≤2ns ≤2ns ≤2.5ns ≤2.5ns VM VLOAD CL RL V∆ VCC/2 VCC/2 1.5V 1.5V 2×VCC 2×VCC 6V 6V 30pF 30pF 50pF 50pF 1KΩ 500Ω 500Ω 500Ω 0.15V 0.15V 0.3V 0.3V Notes: 1. CL includes probe and jig capacitance. 2. All input pulses are supplied by generators having the following characteristics: PRR ≤10MHz, ZO = 50Ω. 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-R126-034.A