UNISONIC TECHNOLOGIES CO., LTD U74AHC574 CMOS IC OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH 3-STATE OUTPUTS DESCRIPTION The U74AHC574 is a octal edge-triggered D-type flip-flops with 3-state outputs, and it has 8 channels. 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. TSSOP-20 FEATURES * Operate from 2V to 5.5V * Max tpd of 13.2 ns at at VCC=3.3V, CL=15pF * Max ICC of 4uA * Typical VOL< 0.36V at VCC=4.5V, IO=8mA, TA=25°C * Typical VOH> 3.94V at VCC=4.5V, IO =-8mA, TA=25°C ORDERING INFORMATION Ordering Number Lead Free Halogen Free U74AHC574L-P20-R U74AHC574G-P20-R U74AHC574L-P20-T U74AHC574G-P20-T www.unisonic.com.tw Copyright © 2012 Unisonic Technologies Co., Ltd Package Packing TSSOP-20 TSSOP-20 Tape Reel Tube 1 of 7 QW-R502-796.A U74AHC574 CMOS IC PIN CONFIGURATION OE 1D 1 20 VCC 2 19 1Q 2D 3 18 2Q 3D 4 17 3Q 4D 5 16 4Q 5D 6 15 5Q 6D 7 14 6Q 7D 8 13 7Q 8D 9 12 8Q GND 10 11 CLK FUNCTION TABLE INPUTS(OE) L L L H LOGIC SYMBOL LOGIC DIAGRAM INPUTS(CLK) ↑ ↑ H or L X UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw INPUTS(D) H L X X OUTPUT(Q) H L Q0 Z 2 of 7 QW-R502-796.A U74AHC574 CMOS IC ABSOLUTE MAXIMUM RATING PARAMETER 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 ±75 mA Output Current IOUT ±25 mA Input Clamp Current IIK -20 mA Output Clamp Current IOK ±20 mA Operating Temperature TOPR -40 ~ + 85 °C Storage Temperature TSTG -65 ~ + 150 °C 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. Supply Voltage Input Voltage Output Voltage RECOMMENDED OPERATING CONDITIONS PARAMETER Supply Voltage SYMBOL VCC High-level Input Voltage VIH Low-level Input Voltage VIL Input Voltage Output Voltage VIN VOUT High-level Output Current IOH Low-level Output Current IOL Input Rise or Fall Times tR, tF TEST CONDITIONS VCC=2V VCC=3V VCC=5.5V VCC=2V VCC=3V VCC=5.5V High or low state VCC=2V VCC=3.3V ± 0.3V VCC=5V± 0.5V VCC=2V VCC=3.3V±0.3V VCC=5V±0.5V VCC=3.3V±0.3V VCC=5V±0.5V MIN 2 1.5 2.1 3.85 TYP MAX 5.5 UNIT V V 0.5 0.9 1.65 VCC VCC -50 -4 -8 50 4 8 100 20 0 0 V V V μA mA μA mA ns ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Output Voltage High-Level VOH Output Voltage Low-Level VOL Input Leakage Current 3-state Leakage Current Quiescent Supply Current Input Capacitance Output Capacitance II(LEAK) IOZ ICC CI CO TEST CONDITIONS VCC=2V, IOH=-50μA VCC=3V, IOH=-50μA VCC=4.5V, IOH=-50μA VCC=3V, IOH=-4mA VCC=4.5V, IOH=-8mA VCC=2V, IOH=50μA VCC=3V, IOH=50μA VCC=4.5V, IOH=50μA VCC=3V, IOH=4mA VCC=4.5V, IOH=8mA VCC= 0 ~ 5.5V, VIN=5.5V or GND VCC=5.5V, VOUT= VCC or GND VCC=5.5V, VIN=VCC or GND, IOUT=0 VCC=5V, VIN=VCC or GND VCC=5V, VOUT=VCC or GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 1.9 2.9 4.4 2.58 3.94 TYP 2 3 4.5 3 3 MAX UNIT V 0.1 0.1 0.1 0.36 0.36 ±0.1 ±0.25 4 10 V μA μA μA pF pF 3 of 7 QW-R502-796.A U74AHC574 CMOS IC SWITCHING CHARACTERISTICS (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 tW Setup Time tSU Hold Time tH TEST CONDITIONS CL=15pF VCC=3.3V±0.3V CL=50pF CL=15pF VCC=5V±0.5V CL=50pF CL=15pF VCC=3.3V±0.3 V CL=50pF CL=15pF VCC=5V±0.5V CL=50pF CL=15pF VCC=3.3V± 0.3V CL=50pF CL=15pF VCC=5V±0.5V CL=50pF CL=15pF VCC=3.3V± 0.3V CL=50pF CL=15pF VCC=5V±0.5V CL=50pF VCC=3.3V± 0.3V VCC=5V±0.5V VCC=3.3V± 0.3V VCC=5V±0.5V VCC=3.3V± 0.3V VCC=5V±0.5V MIN 80 50 130 85 5 5 3.5 3 1.5 1.5 TYP 8.5 11 5.6 7.1 8.2 10.7 5.9 7.4 8.5 11 5.5 7.1 125 75 180 115 MAX 13.2 16.7 8.6 10.6 12.8 16.3 9 11 13 15 9 10.1 UNIT ns ns ns MHz ns ns ns OPERATING CHARACTERISTICS(TA=25°C, unless otherwise specified) PARAMETER Power Dissipation Capacitance SYMBOL TEST CONDITIONS Cpd No load, VCC=5V, f=1MHz UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN TYP 28 MAX UNIT pF 4 of 7 QW-R502-796.A U74AHC574 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 Timing Input CL 15pF 50pF 15pF 50pF RL VΔ 1kΩ 0.3V 1kΩ 0.5V VM t SU tH VIN Data Input VM VM 0V SETUP AND HOLD TIMES UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 7 QW-R502-796.A U74AHC574 CMOS IC TEST CIRCUIT AND WAVEFORMS(Cont.) Note: 1. CL includes probe and jig capacitance. 2. PRR ≤1MHz, ZO = 50Ω, tR ≤3ns, tF ≤3ns. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 7 QW-R502-796.A U74AHC574 CMOS IC 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. 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