UNISONIC TECHNOLOGIES CO., LTD U74HCT374 CMOS IC OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH 3-STATE OUTPUTS DESCRIPTION The U74HCT374 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 * Inputs are TTL-Voltage Compatible * Operate from 4.5V to 5.5V * Inputs Accept Voltages to 5.5V * Max tpd of 25ns at VCC=5.5V, CL=50pF * Typ VOL< 0.26V at VCC=4.5V, IOL=6mA, TA=25°C * Typ VOH> 3.98V at VCC=4.5V, IOH=-6mA, TA=25°C ORDERING INFORMATION Ordering Number Lead Free Halogen Free U74HCT374L-P20-R U74HCT374G-P20-R U74HCT374L-P20-T U74HCT374G-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-R502-646.A U74HCT374 CMOS IC PIN CONFIGURATION FUNCTION TABLE INPUTS( OE ) INPUTS(CLK) INPUTS(D) OUTPUT(Q) L L L H ↑ ↑ H or L X H L X X 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 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-R502-646.A U74HCT374 CMOS IC ABSOLUTE MAXIMUM RATING 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 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 temperature SYMBOL VCC VIH VIL VIN VOUT IOH IOL tR, tF TA UNIT V V V V V mA mA ns/V ℃ RATINGS 4.5 ~ 5.5 2 0.8 0 ~ VCC 0 ~ VCC -8 8 500 -40 ~ 85 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 II(LEAK) Additional quiescent supply current ΔICC Input Capacitance IOZ ICC CI TEST CONDITIONS VCC=4.5V, IOH=-20μA VCC=4.5V, IOH=-6mA VCC=4.5V, IOL=20μA VCC=4.5V, IOL=6mA VCC=5.5V, VIN=0 or 5.5V VCC=5.5V, VIN=VIH or VIH, VOUT=0 or 5.5V VCC=5.5V, VIN=VCC or GND, IOUT=0 VCC=5.5V, one input at 0.5V or 3.4V, Other inputs at VCC or GND VCC=4.5V to 5V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 4.4 3.98 TYP 4.499 4.3 0.001 0.17 ±0.1 MAX UNIT ±0.01 ±0.5 μA 8 μA V 0.1 V 0.26 ±100 nA 1.4 2.4 mA 3 10 pF 3 of 6 QW-R502-646.A U74HCT374 CMOS IC TIMING REQUIREMENTS PARAMETER Clock Frequency SYMBOL fCLOCK Pulse Width, CLK High or Low tW Setup Time, Data Before CLK↑ tSU Hold Time, Data After CLK↑ tH MIN TYP MAX 31 36 16 14 20 17 10 10 UNIT MHz ns ns ns SWITCHING CHARACTERISTICS (See TEST CIRCUIT AND WAVEFORMS) PARAMETER Maximum Clock Frequency From CLK to Q From OE to Q From OE to Q Output transition rise/fall time TEST CONDITIONS VCC=4.5V VCC=5.5V VCC=4.5V VCC=5.5V VCC=4.5V VCC=5.5V VCC=4.5V VCC=5.5V SYMBOL TEST CONDITIONS VCC=4.5V, CL=50pF f(MAX) VCC=5.5V, CL=50pF VCC=4.5V, CL=50pF tPD VCC=5.5V, CL=50pF (tPLH/tPHL) VCC=4.5V, CL=150pF VCC=5.5V, CL=150pF VCC=4.5V, CL=50pF tEN VCC=5.5V, CL=50pF (tPZL/tPZH) VCC=4.5V, CL=150pF VCC=5.5V, CL=150pF tDIS VCC=4.5V, CL=50pF (tPLZ/tPHZ) VCC=5.5V, CL=50pF VCC=4.5V, CL=50pF tT VCC=5.5V, CL=50pF (tR/tF) VCC=4.5V, CL=150pF VCC=5.5V, CL=150pF MIN 31 36 TYP 36 40 30 25 40 35 26 23 34 29 23 22 10 9 18 16 MAX UNIT MHz 36 32 46 41 30 27 40 36 30 27 12 11 42 38 ns 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 RATINGS 85 UNIT pF 4 of 6 QW-R502-646.A U74HCT374 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 tW VIN Input VM VM 0 V Pulse Duration UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 6 QW-R502-646.A U74HCT374 CMOS IC TEST CIRCUIT AND WAVEFORMS(Cont.) VIN Input VM VM tPLH tPHL 0V VOH Output VM VM VOL tPLH tPHL VOH VM Output VM VOL Voltage Waveforms Propagation Delay Times Note: A. CL includes probe and jig capacitance. Note: 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-R502-646.A