UNISONIC TECHNOLOGIES CO., LTD U74AHC125 CMOS IC QUADRUPLE BUS BUFFER GATE WITH 3-STATE OUTPUTS DESCRIPTION The U74AHC125 is a quadruple bus buffer gate with 3-state output. When OE is high, the Y output is in a high-impedance state. SOP-14 When OE is low, the device passes non inverted data from the A input to the Y output. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pull-up resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. FEATURES * Wide supply voltage range from 2V to 5.5V * Max tPD of 3.8ns from A to Y at 5V, CL=15pF * Low Quiescent Current: ICC = 4 μA (Max.) at 5.5V * ±8 mA Output Driver at 5V ORDERING INFORMATION Ordering Number Lead Free U74AHC125L-S14-R U74AHC125L-S14-T Halogen Free U74AHC125G-S14-R U74AHC125G-S14-T www.unisonic.com.tw Copyright © 2011 Unisonic Technologies Co., Ltd Package Packing SOP-14 SOP-14 Tape Reel Tube 1 of 6 QW-R502-650.A U74AHC125 CMOS IC PIN CONFIGURATION FUNCTION TABLE INPUTS A H L X OE L L H OUTPUTS Y H L Z LOGIC DIAGRAM OE A UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw Y 2 of 6 QW-R502-650.A U74AHC125 CMOS IC ABSOLUTE MAXIMUM RATING (unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC -0.5~7 V Input Voltage VIN -0.5~7 V Output Voltage VOUT -0.5~VCC +0.5 V Input Clamp Current (VIN<0) IIK -20 mA Output Clamp Current (VOUT<0, or VOUT>VCC) IOK ±20 mA Output Current IOUT ±25 mA VCC or GND Current ICC ±50 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 COMDITIONS PARAMETER Supply Voltage SYMBOL VCC High-Level Input Voltage VIH Low-Level Input Voltage VIL Input Voltage Output Voltage IOH Low-level Output Current IOL Operating Temperature Δt/Δv TA UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw VCC = 2V VCC = 3V VCC = 5.5V VCC = 2V VCC = 3V VCC = 5.5V VIN VOUT High-level Output Current Input Transition Rise or Fall Rate TEST CONDITIONS MIN 2 1.5 2.1 3.85 0 0 VCC = 2V VCC = 3.3±0.3V VCC = 5±0.5V VCC = 2V VCC = 3.3±0.3V VCC = 5±0.5V VCC = 3.3±0.3V VCC = 5±0.5V -40 TYP MAX UNIT 5.5 V V 0.5 0.9 1.65 5.5 VCC -50 -4 -8 50 4 8 100 20 85 V V V μA mA μA mA ns/V °C 3 of 6 QW-R502-650.A U74AHC125 CMOS IC ELECTRICAL CHARACTERISTICS (TA =25°C , unless otherwise specified) PARAMETER SYMBOL High-Level Output Voltage VOH Low-Level Output Voltage VOL Input Leakage Current (A or OE Input) High-impedance State Current Quiescent Supply Current Input Capacitance SWITCHING CHARACTERISTICS (VCC = 3.3V ± 0.3V, TA =25°C) PARAMETER Propagation Delay from Input A to Output Y, tPD Propagation Delay from Input OE to Output Y, tEN Propagation Delay from Input OE to Output Y, tDIS (VCC = 5V ± 0.5V, TA =25°C) PARAMETER Propagation Delay from Input A to Output Y, tPD Propagation Delay from Input OE to Output Y, tEN Propagation Delay from Input OE to Output Y, tDIS II(LEAK) IOZ ICC CIN TEST CONDITIONS MIN TYP MAX UNIT IOH = -50 μA, VCC = 2V 1.9 2 IOH = -50 μA, VCC = 3V 2.9 3 V IOH = -50 μA, VCC = 4.5V 4.4 4.5 IOH = -4 mA, VCC = 3V 2.58 3.94 IOH = -8 mA, VCC = 4.5V IOH = 50 μA, VCC = 2V 0.1 IOH = 50 μA, VCC = 3V 0.1 V IOH = 50 μA, VCC = 4.5V 0.1 IOH = 4 mA, VCC = 3V 0.36 IOH = 8 mA, VCC = 4.5V 0.36 VIN = 5.5V or GND, VCC = 0 to 5.5V ±0.1 μA VOUT = VCC or GND, VCC = 5.5V ±0.25 μA VIN =VCC or GND, IOUT =0, VCC = 5.5V 4 μA VIN = VCC or GND, VCC=5V 4 10 pF SYMBOL tPLH tPHL tPZH tPZL tPHZ tPLZ SYMBOL tPLH tPHL tPZH tPZL tPHZ tPLZ TEST CONDITIONS CL=15pF, RL=1kΩ CL=50pF, RL=1kΩ CL=15pF, RL=1kΩ CL=50pF, RL=1kΩ CL=15pF, RL=1kΩ CL=50pF, RL=1kΩ CL=15pF, RL=1kΩ CL=50pF, RL=1kΩ CL=15pF, RL=1kΩ CL=50pF, RL=1kΩ CL=15pF, RL=1kΩ CL=50pF, RL=1kΩ MIN TYP MAX UNIT 5.6 8 ns 8.1 11.5 5.6 8 ns 8.1 11.5 5.4 8 ns 7.9 11.5 5.4 8 ns 7.9 11.5 7 9.7 ns 9.5 13.2 7 9.7 ns 9.5 13.2 TEST CONDITIONS CL=15pF, RL=1kΩ CL=50pF, RL=1kΩ CL=15pF, RL=1kΩ CL=50pF, RL=1kΩ CL=15pF, RL=1kΩ CL=50pF, RL=1kΩ CL=15pF, RL=1kΩ CL=50pF, RL=1kΩ CL=15pF, RL=1kΩ CL=50pF, RL=1kΩ CL=15pF, RL=1kΩ CL=50pF, RL=1kΩ MIN TYP MAX UNIT 3.8 5.5 ns 5.3 7.5 3.8 5.5 ns 5.3 7.5 3.6 5.1 ns 5.1 7.1 3.6 5.1 ns 5.1 7.1 4.6 6.8 ns 6.1 8.8 4.6 6.8 ns 6.1 8.8 OPERATING CHARACTERISTICS (TA =25°C) PARAMETER Power Dissipation Capacitance SYMBOL TEST CONDITIONS CPD VCC = 5V, f=1MHz, No load UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw RATINGS 14 UNIT pF 4 of 6 QW-R502-650.A U74AHC125 CMOS IC TEST CIRCUIT AND WAVEFORMS VCC TEST tPLH/tPHL tPLZ/tPZL tPHZ/tPZH S1 Open VLOAD GND VM VLOAD Input VIN tr, tf 3.3V±0.3V VCC ≤3ns VCC/2 VCC 5V±0.5V VCC ≤3ns VCC/2 VCC RL VΔ 1kΩ 0.3V 1kΩ 0.5V CL 15pF 50pF 15pF 50pF tW VIN Input VM VM 0 V Pulse Duration Timing Input VM tSU tH VIN Data Input VM VM 0V Setup and Hold Times UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 6 QW-R502-650.A U74AHC125 CMOS IC VIN Input VM VM tPLH tPHL 0V VOH Output VM VM VOL tPLH tPHL VOH VM Output VM VOL Voltage Waveforms Propagation Delay Times Notes: 1. CL includes probe and jig capacitance. 2. All input pulses are supplied by generators having the following characteristics: PRR ≤1MHz, 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-R502-650.A