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CD74AC139 Datasheet(PDF) 5 Page - Texas Instruments |
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CD74AC139 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 7 page 5 Switching Specifications Input tr, tf = 3ns, CL = 50pF (Worst Case) PARAMETER SYMBOL VCC (V) -40oC TO 85oC -55oC TO 125oC UNITS MIN TYP MAX MIN TYP MAX AC TYPES Propagation Delay, A0, A1 to Outputs tPLH, tPHL 1.5 - - 119 - - 131 ns 3.3 (Note 9) 3.9 - 13.4 3.7 - 14.7 ns 5 (Note 10) 2.8 - 9.5 2.6 - 10.5 ns Propagation Delay, E to Outputs tPLH, tPHL 1.5 - - 119 - - 131 ns 3.1 3.9 - 13.4 3.7 - 14.7 ns 5 2.8 - 9.5 2.6 - 10.5 ns Input Capacitance CI - - -10- -10 pF Power Dissipation Capacitance CPD (Note 11) - - 83 - - 83 - pF ACT TYPES Propagation Delay, A0, A1 to Outputs tPLH, tPHL 5 (Note 10) 3.1 - 10.5 2.9 - 11.5 ns Propagation Delay, E to Outputs tPLH, tPHL 5 3.2 - 10.9 3 - 12 ns Input Capacitance CI - - -10- -10 pF Power Dissipation Capacitance CPD (Note 11) - - 83 - - 83 - pF NOTES: 8. Limits tested at 100%. 9. 3.3V Min at 3.6V, Max at 3V. 10. 5V Min at 5.5V, Max at 4.5V. 11. CPD is used to determine the dynamic power consumption per decoder/demultiplexer. AC: PD = VCC 2 f i (CPD + CL) ACT: PD = VCC 2 f i (CPD + CL) + VCC ∆ICC where fi = input frequency, CL = output load capacitance, VCC = supply voltage. FIGURE 1. FIGURE 2. tr = 3ns 90% tf = 3ns VS 10% tPHL VS INPUT E tPLH INPUT Y3 INPUT GND LEVEL INPUT LEVEL A1 GND OUTPUT Y3 3ns 3ns 90% 10% VS tPHL tPLH VS CD74AC139, CD74ACT139 |
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