UNISONIC TECHNOLOGIES CO., LTD U74AHCT374 CMOS IC OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH 3-STATE OUTPUTS DESCRIPTION The U74AHCT374 is a octal edge-triggered D-type flip-flops with 3-state outputs and 8 channels. TSSOP-20 When the OE input is low, on the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels of the data (D) inputs. When the OE input is high, the outputs are in the high-impedance. 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 * Inputs are TTL-Voltage Compatible * Operate from 4.5V to 5.5V * Inputs Accept Voltages to 5.5V * Max tPD of 9.4ns at VCC=5V, CL=15pF * Typical VOL< 0.36V at VCC=4.5V, IOL=8mA, TA=25°C * Typical VOH> 3.94V at VCC=4.5V, IOH=-8mA, TA=25°C ORDERING INFORMATION Ordering Number Lead Free Halogen Free U74AHCT374L-P20-R U74AHCT374G-P20-R U74AHCT374L-P20-T U74AHCT374G-P20-T www.unisonic.com.tw Copyright © 2011 Unisonic Technologies Co., Ltd Package Packing TSSOP-20 TSSOP-20 Tape Reel Tube 1 of 6 QW+R502-690.A U74AHCT374 CMOS IC PIN CONFIGURATION FUNCTION TABLE INPUTS( OE ) L L L H INPUTS(CLK) ↑ ↑ H or L X OUTPUT(Q) H L Q0 Z LOGIC SYMBOL OE 1 CLK 11 1D 3 2D 3D 4D 4 EN C1 1D 7 8 5D 13 6D 14 7D 17 8D 18 INPUTS(D) H L X X 2 1Q 5 2Q 6 3Q 9 4Q 12 5Q 15 6Q 16 7Q 19 8Q LOGIC DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R502-690.A U74AHCT374 CMOS IC ABSOLUTE MAXIMUM RATING PARAMETER Supply Voltage Input Voltage Output Voltage SYMBOL RATINGS UNIT VCC -0.5 ~ 7 V VIN -0.5 ~ 7 V VOUT -0.5 ~ VCC +0.5 V VCC or GND Current ICC ±70 mA Output Current IOUT ±35 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 High-level Input Voltage Low-level Input Voltage Input Voltage Output Voltage High-Level Output Current Low-Level Output Current Input Rise or Fall Times Operating free-Air Temperature SYMBOL VCC VIH VIL VIN VOUT IOH IOL tR, tF TA MIN 4.5 2 TYP MAX 5.5 UNIT V V V V V mA mA ns/V ℃ 0.8 5.5 VCC -8 8 20 85 0 0 -40 ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Output Voltage High-Level VOH Output Voltage Low-Level VOL Input Leakage Current Leakage Current (For Output in High-Impedance State) Quiescent Supply Current Additional Quiescent Supply Current Input Capacitance Output Capacitance II(LEAK) TEST CONDITIONS VCC=4.5V, IOH=-50μA VCC=4.5V, IOH=-8mA VCC=4.5V, IOL=50μA VCC=4.5V, IOL=8mA VCC=0V to 5.5V, VIN=0 or 5.5V IOZ VCC=5.5V,VIN=VIH or VIH,VOUT=0 or 5.5V ICC VCC=5.5V, VIN=VCC or GND, IOUT=0 VCC=5.5V, one input at 3.4V, Other inputs at VCC or GND VCC=5V, VIN=VCC or GND VCC=5V, VOUT=VCC or GND ΔICC CI CO UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 4.4 3.94 TYP 4.5 4 9 MAX UNIT V 0.1 0.36 ±0.1 μA ±0.25 μA 4 μA 1.35 mA 10 pF pF V 3 of 6 QW-R502-690.A U74AHCT374 CMOS IC SWITCHING CHARACTERISTICS (TA =25℃, See TEST CIRCUIT AND WAVEFORMS) PARAMETER SYMBOL From CLK to Q tPLH/tPHL From OE to Q tPZL/tPZH From OE to Q tPLZ/tPHZ Maximum Clock Frequency fMAX Pulse Width Setup Time Hold Time tW tSU tH TEST CONDITIONS CL =15pF VCC = 5 V ± 0.5 V CL =50pF CL =15pF VCC = 5 V ± 0.5 V CL =50pF CL =15pF VCC = 5 V ± 0.5 V CL =50pF CL =15pF VCC = 5 V ± 0.5 V CL =50pF VCC = 5 V ± 0.5 V VCC = 5 V ± 0.5 V VCC = 5 V ± 0.5 V MIN TYP 5.6 6.4 6.5 7.3 6.2 7 90 85 6.5 2.5 2.5 MAX 9.4 10.4 10.2 11.2 10.2 11.2 140 130 UNIT ns ns ns MHz ns ns ns OPERATING CHARACTERISTICS(TA=25°С) PARAMETER Power Dissipation Capacitance SYMBOL TEST CONDITIONS CPD No load, VCC = 5 V, f=1MHz UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN TYP 27 MAX UNIT pF 4 of 6 QW-R502-690.A U74AHCT374 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 15pF 50pF 1kΩ 0.5V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 6 QW-R502-690.A U74AHCT374 CMOS IC TEST CIRCUIT AND WAVEFORMS(Cont.) VIN Input VM VM tPLH tPHL 0V VOH Output VM VM VOL tPLH tPHL VO H VM Output VM VOL Voltage Waveforms Propagation Delay Times Note: A. CL includes probe and jig capacitance. B. 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 6 of 6 QW-R502-690.A