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3 / 7 page MC74VHCT244A http://onsemi.com 3 MAXIMUM RATINGS Symbol Parameter Value Unit VCC DC Supply Voltage –0.5 to +7.0 V Vin DC Input Voltage –0.5 to +7.0 V Vout DC Output Voltage Output in 3−State High or Low State –0.5 to +7.0 –0.5 to VCC + 0.5 V IIK Input Diode Current −20 mA IOK Output Diode Current (VOUT < GND; VOUT > VCC) ±20 mA Iout DC Output Current, per Pin ±25 mA ICC DC Supply Current, VCC and GND Pins ±75 mA PD Power Dissipation in Still Air, SOIC Packages† TSSOP Package† 500 450 mW Tstg Storage Temperature –65 to +150 °C Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected. †Derating − SOIC Packages: – 7 mW/ °C from 65° to 125°C TSSOP Package: − 6.1 mW/ °C from 65° to 125°C RECOMMENDED OPERATING CONDITIONS Symbol Parameter Min Max Unit VCC DC Supply Voltage 4.5 5.5 V Vin DC Input Voltage 0 5.5 V Vout DC Output Voltage Output in 3−State High or Low State 0 0 5.5 VCC V TA Operating Temperature −40 +125 °C tr, tf Input Rise and Fall Time VCC = 5.0 V ± 0.5 V 0 20 ns/V DC ELECTRICAL CHARACTERISTICS Symbol Parameter Test Conditions VCC V TA = 25°C TA = − 40 to 85°C TA = 85 to 125°C Unit Min Typ Max Min Max Min Max VIH Minimum High−Level Input Voltage 4.5 to 5.5 2.0 2.0 2.0 V VIL Maximum Low−Level Input Voltage 4.5 to 5.5 0.8 0.8 0.8 V VOH Minimum High−Level Output Voltage Vin = VIH or VIL IOH = −50 mA 4.5 4.4 4.5 4.4 4.4 V IOH = −8 mA 4.5 3.94 3.80 3.66 VOL Maximum Low−Level Output Voltage Vin = VIH or VIL IOL = 50 mA 4.5 0.0 0.1 0.1 0.1 V IOL = 8 mA 4.5 0.36 0.44 0.52 Iin Maximum Input Leakage Current Vin = 5.5 V or GND 0 to 5.5 ±0.1 ±1.0 ±1.0 mA IOZ Maximum 3−State Leakage Current Vin = VIL or VIH Vout = VCC or GND 5.5 ±0.25 ±2.5 2.5 mA ICC Maximum Quiescent Supply Current Vin = VCC or GND 5.5 4.0 40.0 40.0 mA ICCT Quiescent Supply Current Per Input: VIN =3.4 V Other Input: VCC or GND 5.5 1.35 1.50 1.65 mA IOPD Output Leakage Current VOUT = 5.5 V 0 0.5 5.0 10 mA 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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