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MC74HCT14A Datasheet(PDF) 2 Page - ON Semiconductor |
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MC74HCT14A Datasheet(HTML) 2 Page - ON Semiconductor |
2 / 8 page MC74HCT14A http://onsemi.com 2 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 (Plastic DIP or SOIC Package) 260 _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 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) — * ns *No Limit when Vin [ 50% VCC, ICC > 1 mA. DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND) Temperature Limit VCC – 55 to 25 _C v 85_C v 125_C Symbol Parameter Test Conditions CC Volts Min Max Min Max Min Max Unit VT+ max Maximum Positive–Going Input Threshold Voltage Vout = 0.1 V or VCC – 0.1 V |Iout| v 20 µA 4.5 5.5 1.9 2.1 1.9 2.1 1.9 2.1 V VT+ min Minimum Positive–Going Input Threshold Voltage Vout = 0.1 V or VCC – 0.1 V |Iout| v 20 µA 4.5 5.5 1.2 1.4 1.2 1.4 1.2 1.4 V VT– max Maximum Positive–Going Input Threshold Voltage Vout = 0.1 V or VCC – 0.1 V |Iout| v 20 µA 4.5 5.5 1.2 1.4 1.2 1.4 1.2 1.4 VT– min Minimum Positive–Going Input Threshold Voltage Vout = 0.1 V or VCC – 0.1 V |Iout| v 20 µA 4.5 5.5 0.5 0.6 0.5 0.6 0.5 0.6 VH max Maximum Hysteresis Voltage Vout = 0.1 V or VCC – 0.1 V |Iout| v 20 µA 4.5 5.5 1.4 1.5 1.4 1.5 1.4 1.5 VH min Minimum Hysteresis Voltage Vout = 0.1 V or VCC – 0.1 V |Iout| v 20 µA 4.5 5.5 0.4 0.4 0.4 0.4 0.4 0 4 VOH Minimum High–Level Output Voltage Vin < VT–min |Iout| v 20 µA 4.5 5.5 4.4 5.4 4.4 5.4 4.4 5.4 V Vin < VT–min |Iout| v 4.0 mA 4.5 3.98 3.84 3.7 NOTE: Information on typical parametric values can be found in Chapter 2 of the ON Semiconductor High–Speed CMOS Data Book (DL129/D). (continued) 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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