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MC74VHCT257AMEL Datasheet(PDF) 4 Page - ON Semiconductor |
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MC74VHCT257AMEL Datasheet(HTML) 4 Page - ON Semiconductor |
4 / 8 page MC74VHCT257A http://onsemi.com 4 DC CHARACTERISTICS (Voltages Referenced to GND) VCC TA = 25°C TA ≤ 85°C −55 °C ≤ TA ≤ 125°C Symbol Parameter Condition (V) Min Typ Max Min Max Min Max Unit VIH Minimum High−Level Input Voltage 4.5 to 5.5 2 2 2 V VIL Maximum Low−Level Input Voltage 4.5 to 5.5 0.8 0.8 0.8 V VOH Maximum High−Level Output Voltage VIN = VIH or VIL IOH = −50 mA 4.5 3.94 3.8 3.66 V Ou u o age VIN = VIH or VIL IOH = −8 mA 4.5 3.94 3.8 3.66 VOL Maximum Low−Level Output Voltage VIN = VIH or VIL IOL = 50 mA 4.5 0 0.1 0.1 0.1 V Ou u o age VIN = VIH or VIL IOH = 8 mA 4.5 0.36 0.44 0.52 IIN 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 = VIH or VIL VOUT = VCC or GND 5.5 ±0.25 ±2.5 ±2.5 mA ICCT Maximum Quiescent Supply Current VIN = VCC or GND 5.5 1.35 1.5 1.65 mA ICC Additional Quiescent Supply Current (per pin) VIN = VCC or GND 5.5 4.0 40 40 mA IOPD Output Leakage Current VOUT = 5.5 V 0 0.5 5 5 mA AC ELECTRICAL CHARACTERISTICS (Input tr = tf = 3.0ns) TA = 25°C TA = ≤ 85°C −55 °C ≤ TA ≤ 125°C Symbol Parameter Test Conditions Min Typ Max Min Max Min Max Unit tPLH, tPHL Maximum Propagation Delay, AorBtoY VCC = 3.3 ± 0.3 V CL = 15 pF CL = 50 pF 5.8 8.3 9.3 12.8 1.0 1.0 11.0 14.5 1.0 1.0 11.0 14.5 ns PHL gy A or B to Y VCC = 5.0 ± 0.5 V CL = 15 pF CL = 50 pF 3.6 5.1 5.9 7.9 1.0 1.0 7.0 9.0 1.0 1.0 7.0 9.0 tPLH, tPHL Maximum Propagation Delay, StoY VCC = 3.3 ± 0.3 V CL = 15 pF CL = 50 pF 7.0 9.5 11.0 14.5 1.0 1.0 13.0 16.5 1.0 1.0 13.0 16.5 ns PHL gy S to Y VCC = 5.0 ± 0.5 V CL = 15 pF CL = 50 pF 4.0 5.5 6.8 8.8 1.0 1.0 8.0 10.0 1.0 1.0 8.0 10.0 tPZL, tPZH Maximum Output Enable, Time OE to Y VCC = 3.3 ± 0.3 V CL = 15 pF RL = 1 kW CL = 50 pF 6.7 9.2 10.5 14.0 1.0 1.0 12.5 16.0 1.0 1.0 12.5 16.0 ns PZH Time, OE to Y VCC = 5.0 ± 0.5 V CL = 15 pF RL = 1 kW CL = 50 pF 3.6 5.1 6.8 11.0 1.0 12.0 8.0 10.0 1.0 1.0 8.0 12.0 tPLZ, tPHZ Maximum Output Disable, Time OE to Y VCC = 3.3 ± 0.3 V CL = 50 pF RL = 1 kW 10.5 14.0 1.0 15.0 1.0 15.0 ns PHZ Time, OE to Y VCC = 5.0 ± 0.5 V CL = 50 pF RL = 1 kW 9.5 12.0 1.0 13.0 1.0 13.0 CIN Maximum Input Capacitance 4 10 10 10 pF Typical @ 25 °C, VCC = 5.0 V CPD Power Dissipation Capacitance (Note 5) 20 pF 5. CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load. Average operating current can be obtained by the equation: ICC(OPR) = CPD VCC fin + ICC. CPD is used to determine the no−load dynamic power consumption; PD = CPD VCC2 fin + ICC VCC. |
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