UNISONIC TECHNOLOGIES CO., LTD U74AHC377 CMOS IC OCTAL D-TYPE FLIP-FLOPS WITH DATA ENABLE POSITIVE-EDGE TRIGGER DESCRIPTION The U74AHC377 is a high-speed Si-gate CMOS device and is compatible with low-power Schottky TTL (LSTTL). The U74AHC377 has eight edge-triggered, D-type flip-flops with individual D inputs and Q outputs. A common clock input (CLK) loads all flip-flops simultaneously when the data enable input ( EN ) is LOW. The state of each D input, one set-up time before the LOW-to-HIGH clock transition, is transferred to the corresponding output (Qn) of the flip-flop. The EN input is only required to be stable one set-up time prior to the LOW-to-HIGH transition for predictable operation. FEATURES * Balanced propagation delays * All inputs have Schmitt-trigger actions * Inputs accept voltages higher than Vcc * Ideal for addressable register applications * Data enable for address and data synchronization * Eight positive-edge triggered D-type flip-flops ORDERING INFORMATION Ordering Number U74AHC377G-R20-T U74AHC377G-P20-R Package SSOP-20 TSSOP-20 Packing Tube Tape Reel MARKING www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd 1 of 8 QW-R502-A48.B U74AHC377 CMOS IC PIN CONFIGURATION PIN DESCRIPTION SYMBOL PIN 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) DESCRIPTION 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-A48.B U74AHC377 FUNCTIONAL DIAGRAM LOGIC SYMBOL UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw CMOS IC 3 of 8 QW-R502-A48.B U74AHC377 CMOS IC LOGIC DIAGRAM (POSITIVE LOGIC) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 8 QW-R502-A48.B U74AHC377 CMOS IC ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Supply Voltage VCC -0.5 7 V Input Voltage VI -0.5 7 V VCC or GND Current ICC -75 +75 mA Output Current IOUT VO=-0.5V to (VCC+0.5V) -25 +25 mA Input Clamp Current IIK VI<-0.5V -20 mA Output Clamp Current IOK VO<-0.5V or VO> VCC+0.5V -20 +20 mA Storage Temperature TSTG -65 +150 °C Note: The input and output voltage ratings may be exceeded if the input and output current ratings are observed. RECOMMENDED OPERATING CONDITIONS PARAMETER Supply Voltage Input Voltage Output Voltage SYMBOL VCC VIN VOUT Input Transition Rise and Fall Rate Ambient Temperature MIN 2 0 0 TYP 5 VCC=3V ~ 3.6V VCC=4.5V ~ 5.5V -40 TA +25 MAX 5.5 5.5 VCC 100 20 +85 UNIT V V V ns/V °C THERMAL DATA PARAMETER Junction to Ambient ∆t/∆v TEST CONDITIONS SYMBOL SOP-20 TSSOP-20 RATINGS 58 83 θJA UNIT °С/W ELECTRICAL CHARACTERISTICS (TA =25°C, unless otherwise specified) PARAMETER SYMBOL High-level Input Voltage VIH Low-level Input Voltage VIL Output Voltage High-Level Output Voltage Low-Level Input Leakage Current VOH VOL II(LEAK) Quiescent Supply Current ICC Input Capacitance CI TEST CONDITIONS VCC=2V VCC=3V VCC=5.5V VCC=2V VCC=3V VCC=5.5V 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=0V to 5.5V, VIN= 5.5V or GND VCC=5.5V, VIN=VCC or GND, IOUT=0 VI=Vcc or GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 1.5 2.1 3.85 TYP MAX V 0.5 0.9 1.65 1.9 2.9 4.4 2.58 3.94 UNIT 2 3 4.5 0 0 0 3 V V 0.1 0.1 0.1 0.36 0.36 V 0.1 μA 4 μA 10 pF 5 of 8 QW-R502-A48.B U74AHC377 CMOS IC DYNAMIC CHARACTERISTICS (tr = tf ≤3ns, ground=0V, TA =25°C, unless otherwise specified) PARAMETER maximum frequency SYMBOL fMAX propagation delay, From CP to Qn tPD pulse width CP, From HIGH or LOW tW set-up time Dn, From EN to CP tSU hold time Dn, From EN to CP tH CONDITIONS VCC=3V to 3.6V, CL=15pF VCC=3V to 3.6V, CL=50pF VCC=4.5V to 5.5V, CL=15pF VCC =4.5V to 5.5V, CL=50pF VCC=3V to 3.6V, CL=15pF VCC=3V to 3.6V, CL=50pF VCC=4.5V to 5.5V, CL=15pF VCC=4.5V to 5.5V, CL=50pF VCC=3V to 3.6V VCC=4.5V to 5.5V VCC=3V to 3.6V VCC=4.5V to 5.5V VCC=3V to 3.6V VCC=4.5V to 5.5V MIN 80 50 125 85 TYP 125 75 175 120 5.6 8 3.9 5.6 MAX UNIT ns 12.8 16 9 10.5 5 5 5 4.5 1.5 2 ns ns ns ns OPERATING CHARACTERISTICS (TA =25°C , unless otherwise specified) PARAMETER Power Dissipation Capacitance Note: tPLH and tPHL are the same as tPD. SYMBOL TEST CONDITIONS CPD f=1MHz; VI=GND to VCC UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN TYP 20 MAX UNIT pF 6 of 8 QW-R502-A48.B U74AHC377 CMOS IC TEST CIRCUIT AND WAVEFORMS UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 of 8 QW-R502-A48.B U74AHC377 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. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 8 of 8 QW-R502-A48.B