UNISONIC TECHNOLOGIES CO., LTD U74AHCT3G14 CMOS IC SCHMITT-TRIGGER INVERTER DESCRIPTION The U74AHCT3G14G is a triple Schmitt-trigger inverter providing the function Y = A . The gates of this device have different input threshold levels for positive-going (VT+) and negative-going(VT-) signals because of the Schmitt-trigger action. The device is capable of transforming slowly changing input signals into sharply defined, jitter-free output signals. TSSOP-8 FEATURES * Low Power Dissipation * TTL voltage compatiable * Symmetrical output impedance * Balanced propagation delays * High noise immunity APPLICATIONS * Wave and pulse shapers * Astable multivibrators * Monostable multivibrators ORDERING INFORMATION Ordering Number Lead Free U74AHCT3G14L-P08-R U74AHCT3G14L-P08-T Halogen Free U74AHCT3G14G-P08-R U74AHCT3G14G-P08-T www.unisonic.com.tw Copyright © 2012 Unisonic Technologies Co., Ltd Package Packing TSSOP-8 TSSOP-8 Tape Reel Tube 1 of 4 QW-R502-729.A U74AHCT3G14 CMOS IC PIN CONFIGURATION 1A 1 8 VCC 3Y 2 7 1Y 2A 3 6 3A GND 4 5 2Y FUNCTION TABLE (each gate) INPUT(A) L H OUTPUT(Y) H L LOGIC DIAGRAM (each gate) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 4 QW-R502-729.A U74AHCT3G14 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 -0.5 ~ VCC +0.5 V VCC or GND Current ICC ±75 mA Output Current IOUT ±25 mA Input Clamp Current IIK -20 mA Output Clamp Current IOK ±20 mA Operating Temperature TOPR -40 ~ + 85 ℃ Storage Temperature TSTG -65 ~ + 150 ℃ 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 Supply Voltage Input Voltage Output Voltage SYMBOL VCC VIN VOUT High or low state MIN 4.5 0 0 TYP 5.0 MAX 5.5 5.5 VCC UNIT V V V MIN TYP MAX 2.0 2.0 UNIT ELECTRICAL CHARACTERISTICS (TA=25°С) PARAMETER SYMBOL Positive-going threshold VT+ Negative-going threshold VT- Hysteresis (VT+ - VT-) ΔVT High-Level Output Voltage VOH Low-Level Output Voltage VOL Input Leakage Current II(LEAK) Quiescent Supply Current ICC Additional quiescent supply current per input pin Input Capacitance TEST CONDITIONS ∆ICC CIN TEST CONDITIONS VCC=4.5 V VCC=5.5 V VCC=4.5 V VCC=5.5 V VCC=4.5 V VCC=5.5 V IOH=-50μA, VCC=4.5 V IOH=-8mA, VCC=4.5 V IOL=50μA, VCC=4.5 V IOL=8mA, VCC=4.5 V VIN=VIH or VIL, VIN=VCC or GND, IOUT=0, VCC=5.5 V VIN=3.4V, VCC=5.5 V, IOUT=0, other inputs at VCC or GND VIN=VCC or GND, VCC=5 V 0.5 0.6 0.4 0.4 4.4 3.94 V V 1.4 1.6 4.5 0 V V 0.1 0.36 0.1 μA 1.0 μA 1.35 mA 1.5 10 pF TYP 4.1 5.9 MAX UNIT V SWITCHING CHARACTERISTICS (TA=25°С, tR = tF ≤ 3.0 ns) PARAMETER Propagation delay from input (nA) to output(nY) SYMBOL tPHL /tPLH TEST CONDITIONS VCC=5.0V, CL = 15pF VCC=5.0V, CL = 50pF VCC=4.5 to 5.5V, CL = 15pF VCC=4.5 to 5.5V, CL = 50pF UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 7.0 8.5 ns 3 of 4 QW-R502-729.A U74AHCT3G14 CMOS IC TEST CIRCUIT AND WAVEFORMS Propagation delay times Inverting and noninverting outputs Note: CL includes probe and jig capacitance. PRR ≤1MHz, ZO = 50Ω, tR ≤3ns, tF ≤3ns. 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 4 of 4 QW-R502-729.A