UNISONIC TECHNOLOGIES CO., LTD U74HC377 CMOS IC OCTAL D-TYPE FLIP-FLOPS WITH CLOCK ENABLE DESCRIPTION The device is positive-edge-triggered octal D-type flip-flops with an enable input. Information at the data (D) inputs meeting the setup time requirements is transferred to the Q outputs on the positive-going edge of the clock (CLK) pulse, if EN is low. Clock triggering occurs at a particular voltage level and is not directly related to the transition time of the positive-going pulse. When CLK is at either the high or low level, the D input has no effect at the output. These devices are designed to prevent false clocking by transitions at EN . FEATURES * Wide Operating Voltage Range of 2V to 6V * Outputs Can Drive Up To 10 LSTTL Loads * Low Power Consumption, ICC=8μA (Max.) * Typical tPD=12ns * ±4mA Output Drive at 5V * Low Input Current of 1μA Max. * Eight Flip-Flops With Single-Rail Outputs * Clock Enable Latched to Avoid False Clocking * Applications Include - Buffer/Storage Registers - Shift Registers - Pattern Generators ORDERING INFORMATION Ordering Number Lead Free Halogen Free U74HC377L-S20-T U74HC377G-S20-T U74HC377L-S20-R U74HC377G-S20-R U74HC377L-P20-T U74HC377G-P20-T U74HC377L-P20-R U74HC377G-P20-R www.unisonic.com.tw Copyright © 2013 Unisonic Technologies Co., Ltd Package Packing SOP-20 SOP-20 TSSOP-20 TSSOP-20 Tube Tape Reel Tube Tape Reel 1 of 8 QW-R502-A49.A U74HC377 CMOS IC PIN CONFIGURATION PIN DESCRIPTION SYMBOL PIN DESCRIPTION EN 1Q 1D 2D 2Q 3Q 3D 4D 4Q GND CLK 5Q 5D 6D 6Q 7D 7Q 8D 8Q VCC 1 Data Enable Input (Active low) 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Flip-flop Output Data Input Data Input Flip-flop Output Flip-flop Output Data Input Data Input Flip-flop Output Ground (0V) Clock Input (Low-to-High, Edge Triggered) Flip-flop Output Data Input Data Input Flip-Flop Output Flip-Flop Output Data Input Data Input Flip-Flop Output Supply Voltage FUNCTION TABLE INPUTS EN H L L X CLK D X ↑ ↑ L X H L X UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw OUTPUT Q Q0 H L Q0 2 of 8 QW-R502-A49.A U74HC377 FUNCTIONAL DIAGRAM LOGIC SYMBOL UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw CMOS IC 3 of 8 QW-R502-A49.A U74HC377 CMOS IC LOGIC DIAGRAM (POSITIVE LOGIC) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 8 QW-R502-A49.A U74HC377 CMOS IC ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC -0.5 ~ 7 V VCC or GND Current ICC ±50 mA Output Current IOUT ±25 mA Input Clamp Current IIK ±20 mA Output Clamp Current IOK ±20 mA 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. RECOMMENDED OPERATING CONDITIONS PARAMETER SYMBOL VCC Supply Voltage High-level Input Voltage VIH Low-level Input Voltage VIL Input Voltage Output Voltage TEST CONDITIONS VCC=2V VCC=4.5V VCC=6V VCC=2V VCC=4.5V VCC=6V MIN 2 1.5 3.15 4.2 VIN VOUT △t/△v Input Transition Rise/Fall Time Operating Free-air Temperature TYP 5 V 0.5 1.35 1.8 VCC VCC 1000 500 400 +85 0 0 VCC=2V VCC=4.5V VCC=6V -40 TA MAX UNIT 6 V V V V ns °C Note: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. THERMAL DATA PARAMETER Junction to Ambient SYMBOL SOP-20 TSSOP-20 θJA RATINGS 58 83 UNIT °С/W ELECTRICAL CHARACTERISTICS (TA =25°C , unless otherwise specified) PARAMETER Output Voltage High-Level SYMBOL VOH Output Voltage Low-Level VOL Input Leakage Current Quiescent Supply Current Input Capacitance II(LEAK) ICC CI TEST CONDITIONS VCC=2V, IOH=-20μA VCC=4.5V, IOH=-20μA VCC=6V, IOH=-20μA VCC=4.5V, IOH=-4mA VCC=6V, IOH=-5.2mA VCC=2V, IOL=20μA VCC=4.5V, IOL=20μA VCC=6V, IOL=20μA VCC=4.5V, IOL=4mA VCC=6V, IOL=5.2mA VCC=6V, VIN= VCC or GND VCC=6V, VIN=VCC or GND, IOUT=0 VCC=2V to 6V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN TYP 1.9 1.998 4.4 4.499 5.9 5.999 3.98 4.3 5.48 5.8 0.002 0.001 0.001 0.17 0.15 ±0.1 3 MAX UNIT V 0.1 0.1 0.1 0.26 0.26 ±100 8 10 V nA μA pF 5 of 8 QW-R502-A49.A U74HC377 CMOS IC TIMING REQUIREMENTS (TA =25°C , unless otherwise specified) PARAMETER Clock frequency Pulse duration SYMBOL fCLOCK CLK high or low tW D Setup time before CLK↑ tSU EN high or low Hold time after CLK↑ EN inactive or active, data tH MIN TYP 100 20 17 100 20 17 100 20 17 5 5 5 MAX UNIT 5 MHz 25 MHz 29 MHz ns ns ns ns ns ns ns ns ns ns ns ns SWITCHING CHARACTERISTICS (tr= tf= 6ns, CL=50pF, TA =25°C, unless otherwise specified) PARAMETER SYMBOL Minimum Frequency Response fMAX From CLK to Q tPD To Any TEST CONDITIONS VCC=2.0V VCC=4.5V VCC=6.0V VCC=2.0V VCC=4.5V VCC=6.0V VCC=2.0V VCC=4.5V VCC=6.0V VCC=2.0V VCC=4.5V VCC=6.0V VCC=2.0V VCC=4.5V VCC=6.0V tt TEST CONDITIONS VCC=2.0V VCC=4.5V VCC=6.0V VCC=2.0V VCC=4.5V VCC=6.0V VCC=2.0V VCC=4.5V VCC=6.0V MIN 5 25 29 TYP 11 54 64 56 15 12 38 8 6 MAX UNIT ns ns ns 160 ns 32 ns 27 ns 75 ns 15 ns 13 ns MIN TYP 30 MAX UNIT pF OPERATING CHARACTERISTICS (TA =25°C , unless otherwise specified) PARAMETER Power Dissipation Capacitance SYMBOL TEST CONDITIONS CPD No load. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 8 QW-R502-A49.A U74HC377 CMOS IC TEST CIRCUIT AND WAVEFORMS UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 of 8 QW-R502-A49.A U74HC377 CMOS IC TEST CIRCUIT AND WAVEFORMS (Cont.) Notes: A. CL includes probe and test-fixture capacitance. B. Phase relationships between waveforms were chosen arbitrarily. All input pulse are supplied by generators having the following characteristics: PRR≤1MHz, ZO=50Ω. C. For clock inputs, fMAX is measured when the input duty cycle is 50%. D. The outputs are measured one at a time with one input transition per measurement. E. tPLH and tPHL are the same as tPD. 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 8 of 8 QW-R502-A49.A