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MC74HCT273ADW Datasheet(PDF) 2 Page - ON Semiconductor |
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MC74HCT273ADW Datasheet(HTML) 2 Page - ON Semiconductor |
2 / 8 page MC74HCT273A http://onsemi.com 2 LOGIC DIAGRAM DATA INPUTS D0 11 CLOCK D1 D2 D3 D4 D5 D6 D7 18 17 14 13 8 7 4 3 1 RESET 19 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 16 15 12 9 6 5 2 PIN 20 = VCC PIN 10 = GND NONINVERTING OUTPUTS FUNCTION TABLE Inputs Output Reset Clock D Q LX X L HH H HL L H L X No Change H X No Change X = Don’t Care Z = High Impedance 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) – 0.5 to VCC + 0.5 V Vout DC Output Voltage (Referenced to GND) – 0.5 to VCC + 0.5 V Iin DC Input Current, per Pin ± 20 mA Iout DC Output Current, per Pin ± 25 mA ICC DC Supply Current, VCC and GND Pins ± 50 mA PD Power Dissipation in Still Air Plastic DIP† SOIC Package† 750 500 mW Tstg Storage Temperature – 65 to + 150 _C TL Lead Temperature, 1 mm from Case for 10 Seconds (SOIC or Plastic DIP) 260 _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 125_C SOIC Package: – 7 mW/_C from 65_ to 125_C For high frequency or heavy load considerations, see Chapter 2 of the ON Semiconductor High−Speed CMOS Data Book (DL129/D). RECOMMENDED OPERATING CONDITIONS Symbol Parameter Min Max Unit VCC DC Supply Voltage (Referenced to GND) 4.5 5.5 V Vin, Vout DC Input Voltage, Output Voltage (Referenced to GND) 0 VCC V TA Operating Temperature, All Package Types – 55 + 125 _C tr, tf Input Rise and Fall Time (Figure 1) 0 500 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 cir- cuit. For proper operation, Vin and Vout should be constrained to the range GND v (Vin or Vout) v 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. |
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