 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| IN74HC273A OCTAL D FLIP-FLOP WITH COMMON CLOCK AND RESET High-Performance Silicon-Gate CMOS The IN74HC273A 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 IN74HC273AN Plastic IN74HC273ADW SOIC TA = -55 to 125 C for all packages PIN ASSIGNMENT LOGIC DIAGRAM PIN 20=VCC PIN 10 = GND Reset L H H H H FUNCTION TABLE Inputs Clock X D X H L X X Output Q L H L no change no change L X = don't care 1 IN74HC273A MAXIMUM RATINGS* Symbol Parameter Value Unit VCC DC Supply Voltage (Referenced to GND) -0.5 to +7.0 V VIN DC Input Voltage (Referenced to GND) -1.5 to VCC +1.5 V VOUT DC Output Voltage (Referenced to GND) -0.5 to VCC +0.5 V IIN DC Input Current, per Pin mA 20 IOUT DC Output Current, per Pin mA 35 ICC DC Supply Current, VCC and GND Pins mA 75 PD Power Dissipation in Still Air, Plastic DIP+ 750 mW SOIC Package+ 500 Tstg Storage Temperature -65 to +150 C 260 TL Lead Temperature, 1 mm from Case for 10 C Seconds (Plastic DIP or SOIC Package) * 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 Parameter VCC DC Supply Voltage (Referenced to GND) VIN, VOUT DC Input Voltage, Output Voltage (Referenced to GND) TA Operating Temperature, All Package Types t r, tf Input Rise and Fall Time (Figure VCC =2.0 V 1) 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 VCC). Unused outputs must be left open. 2 IN74HC273A DC ELECTRICAL CHARACTERISTICS(Voltages Referenced to GND) Guaranteed Limit VCC Symbol Parameter Test Conditions V 85 125 25 C to C C -55C 1.5 1.5 VOUT=0.1 V or VCC-0.1 V 2.0 1.5 VIH Minimum High3.15 3.15 3.15 Level Input 4.5 IOUT 20 A 4.2 4.2 4.2 Voltage 6.0 0.5 0.5 VOUT=0.1 V or VCC-0.1 V 2.0 0.5 VIL Maximum Low 1.35 1.35 1.35 Level Input 4.5 IOUT 20 A 1.8 1.8 1.8 Voltage 6.0 1.9 1.9 VIN=VIH or VIL 1.9 VOH Minimum High2.0 4.4 4.4 4.4 Level Output 4.5 IOUT 20 A 5.9 5.9 5.9 Voltage 6.0 VIN=VIH or VIL 3.7 3.84 3.98 4.5 IOUT 4.0 mA 5.2 5.34 5.48 6.0 IOUT 5.2 mA 0.1 0.1 VIN= VIL or VIH 0.1 VOL Maximum Low2.0 0.1 0.1 0.1 Level Output 4.5 IOUT 20 A 0.1 0.1 0.1 Voltage 6.0 VIN= VIL or VIH 0.4 0.33 0.26 4.5 IOUT 4.0 mA 0.4 0.33 0.26 6.0 IOUT 5.2 mA IIN Maximum Input VIN=VCC or GND 6.0 0.1 1.0 1.0 Leakage Current VIN=VCC or GND ICC Maximum 6.0 4.0 40 160 Quiescent Supply IOUT=0A Current (per Package) Unit V V V V A A 3 IN74HC273A AC ELECTRICAL CHARACTERISTICS(CL=50pF,Input tr=tf=6.0 ns) Guaranteed Limit VCC Symbol Parameter V 25 C 85C 125 to C -55C 4.0 5.0 6.0 fmax Maximum Clock Frequency (50% Duty 2.0 20 24 30 Cycle) (Figures 1 and 4) 4.5 24 28 35 6.0 220 180 145 tPLH, Maximum Propagation Delay, Clock to Q 2.0 44 36 29 tPHL (Figures 1 and 4) 4.5 38 31 25 6.0 220 180 145 tPHL Maximum Propagation Delay , Reset to 2.0 44 36 29 Q (Figures 2 and 4) 4.5 38 31 25 6.0 110 95 75 tTLH, tTHL Maximum Output Transition Time, Any 2.0 22 19 15 Output (Figures 1 and 4) 4.5 19 16 13 6.0 CIN Maximum Input Capacitance 10 10 10 Power Dissipation Capacitance (Per Typical @25C,VCC=5.0 V Enabled Output) CPD Used to determine the no-load dynamic 48 power consumption: PD=CPDVCC2f+ICCVCC TIMING REQUIREMENTS (CL=50pF,Input tr=tf=6.0 ns) Guaranteed Limit VCC Symbol Parameter V 25 C to85C 125C 55C 90 75 60 tSU Minimum Setup Time, 2.0 18 15 12 Data to Clock (Figure 3) 4.5 15 13 10 6.0 3.0 3.0 3.0 th Minimum Hold Time, 2.0 3.0 3.0 3.0 Clock to Data (Figure 3) 4.5 3.0 3.0 3.0 6.0 5.0 5.0 5.0 trec Minimum Recovery 2.0 5.0 5.0 5.0 Time, Reset Inactive to 4.5 5.0 5.0 5.0 6.0 Clock (Figure 2) 90 75 60 tw Minimum Pulse Width, 2.0 18 15 12 Clock (Figure 1) 4.5 15 13 10 6.0 90 75 60 tw Minimum Pulse Width, 2.0 18 15 12 Reset (Figure 2) 4.5 15 13 10 6.0 1000 1000 1000 tr, tf Maximum Input Rise and 2.0 500 500 500 Fall Times (Figure 1) 4.5 400 400 400 6.0 Unit MHz ns ns ns pF pF Unit ns ns ns ns ns ns 4 IN74HC273A Figure 1. Switching Waveforms Figure 2. Switching Waveforms Figure 3. Switching Waveforms Figure 4. Test Circuit EXPANDED LOGIC DIAGRAM 5 |
Price & Availability of IN74HC273AN
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |