UNISONIC TECHNOLOGIES CO., LTD U74AHCT3G17 CMOS IC NON-INVERTING SCHMITT TRIGGER DESCRIPTION The U74AHCT3G17 is a high-speed triple Schmitt-trigger buffer. It provides three Schmitt-trigger buffers with the function Y=A. The trigger is capable of transforming slowly changing input signals into sharply defined, jitter-free output signals. The U74AHCT3G17 is compatible with TTL input switching levels and has supply voltage range from 4.5V to 5.5V. TSSOP-8 FEATURES * Low power supply 1.0μA at 5.5V * Up to 5.5V inputs accept voltages * Symmetrical output impedance * High noise immunity * Balanced propagation delays APPLICATION * Astable multivibrators * Monostable multivibrators * Wave and pulse shapers ORDERING INFORMATION Ordering Number Lead Free Halogen Free U74AHCT3G17L-P08-R U74AHCT3G17G-P08-R U74AHCT3G17L-P08-T U74AHCT3G17G-P08-T www.unisonic.com.tw Copyright © 2011 Unisonic Technologies Co., Ltd Package Packing TSSOP-8 TSSOP-8 Tape Reel Tube 1 of 6 QW-R502-694.A U74AHCT3G17 CMOS IC PIN CONFIGURATION 1A 1 8 VCC 3Y 2 7 1Y 2A 3 6 3A GND 4 5 2Y FUNCTION TABLE INPUT nA L H LOGIC SYMBOL LOGIC DIAGRAM (one driver) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw OUTPUT nY L H 2 of 6 QW-R502-694.A U74AHCT3G17 CMOS IC ABSOLUTE MAXIMUM RATING (unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC -0.5~7.0 V Input Voltage VIN -0.5~7.0 V Output Voltage VOUT 0~VCC V Input Diode Current (VI < -0.5V) IIK -20 mA Output Diode Current (VO < -0.5V or VO > VCC + 0.5V) IOK ±20 mA Output Source or Sink Current (-0.5V<VO<VCC + 0.5V) IOUT ±25 mA VCC or GND Current ICC ±75 mA PD mW Power Dissipation 250 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 Input Voltage Output Voltage Operating Temperature SYMBOL VCC VI VO TA TYP 5.0 +25 MAX 5.5 5.5 VCC +125 UNIT V V 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 Quiescent Supply Current II(LEAK) ICC Additional Quiescent Supply Current Δ ICC Input Capacitance MIN 4.5 0 0 -40 TEST CONDITIONS VI = VIH or VIL, IO = -50μA, VCC = 4.5V VI = VIH or VIL, IO = -8.0mA, VCC = 4.5V VI = VIH or VIL, IO = 50μA, VCC = 4.5V VI = VIH or VIL, IO = 8.0mA, VCC = 4.5V VI = VCC or GND, VCC = 5.5V, IO = 0 A VI = VCC or GND, IO = 0 A One input at 3.4V, IOUT = 0, VCC = 5.5V, Other inputs at VCC or GND CIN 1.5 TRANSFER CHARACTERISTICS PARAMETER SYMBOL Positive-going Threshold VT+ Negative-going Threshold VT- Hysteresis (VT+ - VT-) VH UNIT V V μA μA 1.35 mA 10 pF (TA =25°C , unless otherwise specified) TEST CONDITIONS VCC = 4.5V VCC = 5.5V VCC = 4.5V VCC = 5.5V VCC = 4.5V VCC = 5.5V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN TYP MAX 4.4 4.5 3.94 0 0.1 0.36 0.1 1.0 MIN 0.5 0.6 0.4 0.4 TYP MAX 2.0 2.0 UNIT V V 1.4 1.6 V 3 of 6 QW-R502-694.A U74AHCT3G17 AC CHARACTERISTICS (TA =25°C, GND = 0V, tR = tF ≤ 3.0 ns) PARAMETER Propagation Delay from Input (nA) to Output (nY) CMOS IC SYMBOL TEST CONDITIONS tPLH/tPHL VCC = 4.5 to 5.5V, CL = 15 pF (tPD) VCC = 4.5 to 5.5V, CL = 50 pF MIN TYP MAX UNIT 4.1 7.0 ns 5.9 8.5 OPERATING CHARACTERISTICS (TA =25°C) PARAMETER SYMBOL TEST CONDITIONS Power Dissipation Capacitance Per Buffer CPD CL= 50pF, f=1MHz (Note 1, 2) Notes: 1. CPD is used to determine the dynamic power dissipation (PD in μW). PD = CPD × VCC2 × fI × N + Σ(CL × VCC2 × fO) where: fI = input frequency in MHz; fO = output frequency in MHz; CL = output load capacitance in pF; VCC = supply voltage in Volts; N = number of inputs switching; Σ(CL × VCC2 × fO) = sum of the outputs. 2. The condition is VI = GND to VCC. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw TYP 12 UNIT pF 4 of 6 QW-R502-694.A U74AHCT3G17 CMOS IC WAVEFORMS Fig.1 Transfer characteristic VT+ VT- VI VH VO Fig.2 Definitions of VT+ , VT- and VH UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 6 QW-R502-694.A U74AHCT3G17 CMOS IC TEST CIRCUIT AND WAVEFORMS Definitions for test circuit: CL = Load capacitance including jig and probe capacitance. RT = Termination resistance should be equal to the output impedance ZO of the pulse generator. VCC 4.5 to 5.5V INPUTS VIN GND to 3.0 V tR, tF ≤3ns VM CL 1.5 V 15 or 50 pF 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-R502-694.A