UNISONIC TECHNOLOGIES CO., LTD U74HCT125 CMOS IC QUADRUPLE BUS BUFFER GATES WITH 3-STATE OUTPUTS DESCRIPTION The U74HCT125 is a quadruple bus buffer gates with 3-state output. When OE is high, the Y outputs are in a high-impedance state. When OE is low, the device passes noninverted 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 * TTL-Voltage Compatible * Max tPD of 12 ns from A to Y at 5.5 V, CL = 50 pF * Low power consumption, ICC = 8μA (Max) at 5.5V * ±6mA output driver at 5V ORDERING INFORMATION Ordering Number Lead Free Halogen Free U74HCT125L-S14-T U74HCT125G-S14-T U74HCT125L-S14-R U74HCT125G-S14-R U74HCT125L-P14-T U74HCT125G-P14-T U74HCT125L-P14-R U74HCT125G-P14-R www.unisonic.com.tw Copyright © 2012 Unisonic Technologies Co., Ltd Package Packing SOP-14 SOP-14 TSSOP-14 TSSOP-14 Tube Tape Reel Tube Tape Reel 1 of 6 QW-R502-700.B U74HCT125 CMOS IC PIN CONFIGURATION FUNCTION TABLE (each buffer) INPUTS OE A H L X L L H OUTPUTS Y H L Z LOGIC DIAGRAM (each buffer) OE A UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw Y 2 of 6 QW-R502-700.B U74HCT125 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, or VIN>0) IIK ±20 mA Output Clamp Current (VOUT<0, or VOUT>VCC) 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 COMDITIONS PARAMETER Supply Voltage High-Level Input Voltage (VCC =4.5V to 5.5V) Low-Level Input Voltage (VCC = 4.5V to 5.5V) Input Voltage Output Voltage Input Transition Rise or Fall Rate Operating Temperature SYMBOL VCC VIH VIL VIN VOUT Δt/Δv TA MIN 4.5 2 TYP 5 MAX 5.5 25 0.8 VCC VCC 500 85 0 0 -40 UNIT V V V V V ns/V °C 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 Additional Quiescent Supply Current Input Capacitance II(LEAK) IOZ ICC ΔICC CIN TEST CONDITIONS IOH = -20μA, VCC =4.5 V IOH = -6 mA, VCC =4.5 V IOL = 20 μA, VCC =4.5 V IOL = 6 mA , VCC =4.5 V TYP 4.5 4.3 0.001 0.17 MAX UNIT 0.1 0.26 V VIN = 5.5V or GND, VCC =5.5 V ±0.1 ±100 μA VOUT = VCC or GND, VCC =5.5 V VIN = VCC or GND, IOUT = 0, VCC =5.5 V One input at 0.5V or 2.4V, VCC =5.5 V, other inputs at VCC or GND VCC =4.5V to 5.5 V ±0.01 ±0.5 8 μA μA 1.4 2.4 mA 3 10 pF UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 4.4 3.98 V 3 of 6 QW-R502-700.B U74HCT125 CMOS IC SWITCHING CHARACTERISTICS (CL = 50 pF, TA =25°C) PARAMETER SYMBOL TEST CONDITIONS VCC =4.5 V Propagation Delay from Input A to tPLH/ tPHL Output Y, tPD VCC =5.5 V V Propagation Delay from Input OE CC =4.5 V tPZH/ tPZL VCC =5.5 V to Output Y, tEN VCC =4.5 V Propagation delay from input OE to tPHZ/ tPLZ output Y, tDIS VCC =5.5 V VCC =4.5 V Output transition (rise and fall) time, tTLH/ tTHL tT VCC =5.5 V (CL = 150 pF, TA =25°C) PARAMETER SYMBOL TEST CONDITIONS VCC =4.5 V Propagation Delay from Input A to tPLH/ tPHL Output Y, tPD VCC =5.5 V VCC =4.5 V Propagation Delay from Input OE tPZH/ tPZL VCC =5.5 V to Output Y, tEN VCC =4.5 V Output transition (rise and fall) time, tTLH/ tTHL tT VCC =5.5 V MIN MIN TYP 15 12 18 15 15 13 8 7 MAX 26 23 28 25 26 23 15 14 UNIT TYP 19 16 25 21 17 14 MAX 36 32 40 35 42 38 UNIT ns ns ns ns ns ns ns OPERATING CHARACTERISTICS (TA =25°C) PARAMETER Power dissipation capacitance SYMBOL CPD UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw TEST CONDITIONS TYP 35 UNIT pF 4 of 6 QW-R502-700.B U74HCT125 CMOS IC TEST CIRCUIT AND WAVEFORMS VCC 5V±0.5V Input VIN tR, tF VCC ≤3ns TEST tPLH/tPHL tPLZ/tPZL tPHZ/tPZH S1 Open VLOAD GND VM VLOAD CL RL VΔ VCC/2 VCC 50pF 150pF 1kΩ 0.5V VIN Input VM VM 0V tPHL tPLH VOH Output VM VM tR tPHL tF VOL tPLH VOH Output VM tF UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw VM tR VOL 5 of 6 QW-R502-700.B U74HCT125 CMOS IC TEST CIRCUIT AND WAVEFORMS(Cont.) VIN Input VM VM 0V tPLZ tPZL VLOAD Output VM S1 at VLOAD VOL tPZH tPHZ - Output VOH VM S1 at GND 0V Voltage Waveforms Enable and Disable 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-R502-700.B