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MC74VHC245 Datasheet(PDF) 3 Page - Motorola, Inc |
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MC74VHC245 Datasheet(HTML) 3 Page - Motorola, Inc |
3 / 7 page MC74VHC245 VHC Data – Advanced CMOS Logic DL203 — Rev 1 3 MOTOROLA DC ELECTRICAL CHARACTERISTICS Unit TA = – 40 to 85°C TA = 25°C VCC V Test Conditions Parameter Symbol Unit Max Min Max Typ Min VCC V Test Conditions Parameter Symbol IOZ Maximum Three–State Leakage Current Vin = VIL or VIH Vout = VCC or GND 5.5 ± 0.25 ± 2.5 µA ICC Maximum Quiescent Supply Current Vin = VCC or GND 5.5 4.0 40.0 µA AC ELECTRICAL CHARACTERISTICS (Input tr = tf = 3.0ns) Sb l P T C di i TA = 25°C TA = – 40 to 85°C Ui Symbol Parameter Test Conditions Min Typ Max Min Max Unit tPLH, tPHL Maximum Propagation Delay, A to B or B to A VCC = 3.3 ± 0.3V CL = 15pF CL = 50pF 5.8 8.3 8.4 11.9 1.0 1.0 10.0 13.5 ns VCC = 5.0 ± 0.5V CL = 15pF CL = 50pF 4.0 5.5 5.5 7.5 1.0 1.0 6.5 8.5 tPZL, tPZH Output Enable Time OE to A or B VCC = 3.3 ± 0.3V CL = 15pF RL = 1 kΩ CL = 50pF 8.5 11.0 13.2 16.7 1.0 1.0 15.5 19.0 ns VCC = 5.0 ± 0.5V CL = 15pF RL = 1 kΩ CL = 50pF 5.8 7.3 8.5 10.6 1.0 1.0 10.0 12.0 tPLZ, tPHZ Output Disable Time OE to A or B VCC = 3.3 ± 0.3V CL = 50pF RL = 1 kΩ 11.5 15.8 1.0 18.0 ns VCC = 5.0 ± 0.5V CL = 50pF RL = 1 kΩ 7.0 9.7 1.0 11.0 tOSLH, tOSHL Output to Output Skew VCC = 3.3 ± 0.3V CL = 50pF (Note 1.) 1.5 1.5 pF VCC = 5.0 ± 0.5V CL = 50pF (Note 1.) 1.0 1.0 ns Cin Maximum Input Capacitance DIR, OE 4 10 10 pF CI/O Maximum Three–State I/O Capacitance 8 pF C PDi i i C i (N 2 ) Typical @ 25 °C, VCC = 5.0V F CPD Power Dissipation Capacitance (Note 2.) 21 pF 1. Parameter guaranteed by design. tOSLH = |tPLHm – tPLHn|, tOSHL = |tPHLm – tPHLn|. 2. 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 / 8 (per bit). CPD is used to determine the no–load dynamic power consumption; PD = CPD VCC2 fin + ICC VCC. NOISE CHARACTERISTICS (Input tr = tf = 3.0ns, CL = 50pF, VCC = 5.0V) Sb l P TA = 25°C Ui Symbol Parameter Typ Max Unit VOLP Quiet Output Maximum Dynamic VOL 0.9 1.2 V VOLV Quiet Output Minimum Dynamic VOL –0.9 –1.2 V VIHD Minimum High Level Dynamic Input Voltage 3.5 V VILD Maximum Low Level Dynamic Input Voltage 1.5 V |
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