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| SL74HC273 Octal D Flip-Flop with Common Clock and Reset High-Performance Silicon-Gate CMOS The SL74HC273 is identical in pinout to the LS/ALS273. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALSTTL outputs. This device consists of eight D flip-flops with common Clock and Reset inputs. Each flip-flop is loaded with a low-to-high transition of the Clock input. Reset is asynchronous and active low. * Outputs Directly Interface to CMOS, NMOS, and TTL * Operating Voltage Range: 2.0 to 6.0 V * Low Input Current: 1.0 A * High Noise Immunity Characteristic of CMOS Devices ORDERING INFORMATION SL74HC273N Plastic SL74HC273D SOIC TA = -55 to 125 C for all packages PIN ASSIGNMENT LOGIC DIAGRAM FUNCTION TABLE PIN 20=VCC PIN 10 = GND Inputs Reset L H H H H X = don't care L Clock X D X H L X X Output Q L H L no change no change SLS System Logic Semiconductor SL74HC273 MAXIMUM RATINGS * Symbol VCC VIN VOUT IIN IOUT ICC PD Tstg TL * Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage (Referenced to GND) DC Output Voltage (Referenced to GND) DC Input Current, per Pin DC Output Current, per Pin DC Supply Current, VCC and GND Pins Power Dissipation in Still Air, Plastic DIP+ SOIC Package+ Storage Temperature Lead Temperature, 1 mm from Case for 10 Seconds (Plastic DIP or SOIC Package) Value -0.5 to +7.0 -1.5 to VCC +1.5 -0.5 to VCC +0.5 20 35 75 750 500 -65 to +150 260 Unit V V V mA mA mA mW C C Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended Operating Conditions. +Derating - Plastic DIP: - 10 mW/C from 65 to 125C SOIC Package: : - 7 mW/C from 65 to 125C RECOMMENDED OPERATING CONDITIONS Symbol VCC VIN, VOUT TA tr, t f Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage, Output Voltage (Referenced to GND) Operating Temperature, All Package Types Input Rise and Fall Time (Figure 1) VCC =2.0 V VCC =4.5 V VCC =6.0 V Min 2.0 0 -55 0 0 0 Max 6.0 VCC +125 1000 500 400 Unit V V C ns This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high-impedance circuit. For proper operation, VIN and VOUT should be constrained to the range GND(VIN or VOUT)VCC. Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or V ). CC Unused outputs must be left open. SLS System Logic Semiconductor SL74HC273 DC ELECTRICAL CHARACTERISTICS(Voltages Referenced to GND) VCC Symbol VIH Parameter Minimum High-Level Input Voltage Maximum Low -Level Input Voltage Minimum High-Level Output Voltage Test Conditions VOUT=0.1 V or VCC-0.1 V IOUT 20 A VOUT=0.1 V or VCC-0.1 V IOUT 20 A VIN=VIH or VIL IOUT 20 A VIN=VIH or VIL IOUT 4.0 mA IOUT 5.2 mA VOL Maximum Low-Level Output Voltage VIN= VIL or VIH IOUT 20 A VIN= VIL or VIH IOUT 4.0 mA IOUT 5.2 mA IIN ICC Maximum Input Leakage Current Maximum Quiescent Supply Current (per Package) VIN=VCC or GND VIN=VCC or GND IOUT=0A V 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 4.5 6.0 2.0 4.5 6.0 4.5 6.0 6.0 6.0 Guaranteed Limit 25 C to -55C 1.5 3.15 4.2 0.5 1.35 1.8 1.9 4.4 5.9 3.98 5.48 0.1 0.1 0.1 0.26 0.26 0.1 4.0 85 C 1.5 3.15 4.2 0.5 1.35 1.8 1.9 4.4 5.9 3.84 5.34 0.1 0.1 0.1 0.33 0.33 1.0 40 125 C 1.5 3.15 4.2 0.5 1.35 1.8 1.9 4.4 5.9 3.7 5.2 0.1 0.1 0.1 0.4 0.4 1.0 160 A A V Unit V VIL V VOH V SLS System Logic Semiconductor SL74HC273 AC ELECTRICAL CHARACTERISTICS(CL=50pF,Input t r=t f=6.0 ns) VCC Symbol fmax Parameter Maximum Clock Frequency (50% Duty Cycle) (Figures 1 and 4) Maximum Propagation Delay, Clock to Q (Figures 1 and 4) Maximum Propagation Delay , Reset to Q (Figures 2 and 4) Maximum Output Transition Time, Any Output (Figures 1 and 4) Maximum Input Capacitance Power Dissipation Capacitance (Per Enabled Output) CPD Used to determine the no-load dynamic power consumption: PD=CPDVCC2f+ICCVCC V 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 Guaranteed Limit 25 C to -55C 6.0 30 35 145 29 25 145 29 25 75 15 13 10 85C 5.0 24 28 180 36 31 180 36 31 95 19 16 10 125C 4.0 20 24 220 44 38 220 44 38 110 22 19 10 Unit MHz tPLH, t PHL ns tPHL ns tTLH, t THL ns CIN pF Typical @25C,VCC=5.0 V 48 pF TIMING REQUIREMENTS (CL=50pF,Input t r=t f=6.0 ns) VCC Symbol tSU Parameter Minimum Setup Time, Data to Clock (Figure 3) Minimum Hold Time, Clock to Data (Figure 3) Minimum Recovery Time, Reset Inactive to Clock (Figure 2) Minimum Pulse Width, Clock (Figure 1) Minimum Pulse Width, Reset (Figure 2) Maximum Input Rise and Fall Times (Figure 1) V 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 Guaranteed Limit 25 C to-55C 60 12 10 3.0 3.0 3.0 5.0 5.0 5.0 60 12 10 60 12 10 1000 500 400 85C 75 15 13 3.0 3.0 3.0 5.0 5.0 5.0 75 15 13 75 15 13 1000 500 400 125C 90 18 15 3.0 3.0 3.0 5.0 5.0 5.0 90 18 15 90 18 15 1000 500 400 Unit ns th ns trec ns tw ns tw ns tr, tf ns SLS System Logic Semiconductor SL74HC273 Figure 1. Switching Waveforms Figure 2. Switching Waveforms Figure 3. Switching Waveforms Figure 4. Test Circuit EXPANDED LOGIC DIAGRAM SLS System Logic Semiconductor |
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