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74HCT125T14-13 Arkusz danych(PDF) 4 Page - Diodes Incorporated |
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74HCT125T14-13 Arkusz danych(HTML) 4 Page - Diodes Incorporated |
4 / 8 page 74HCT125 Document number: DS35336 Rev. 3 - 2 4 of 8 www.diodes.com January 2013 © Diodes Incorporated 74HCT125 Switching Characteristics Symbol Parameter Test Conditions VCC TA = +25°C -40°C to +85°C -40°C to +125°C Unit Min Typ Max Max Max tPD Propagation Delay AN to YN Figure 1 CL = 50pF 4.5V — 15 25 31 38 ns tEN Enable Time OEN to YN — 15 28 35 42 ns tDIS DisableTime OEN to YN — 15 25 31 38 ns tt Transition Time — 5 12 15 18 ns Operating Characteristics (@TA = +25°C, unless otherwise specified.) Parameter Test Conditions VCC = 5.5V Unit Typ Cpd Power Dissipation Capacitance per Gate f = 1 MHz 24 pF CI Input Capacitance VI = VCC – or GND 3.5 pF Parameter Measurement Information VCC Inputs VM VLOAD CL RL V∆ VI tr/tf 4.5V 1.5V ≤6ns 3.0V 2 X VCC 50pF 2KΩ 10% of VCC Voltage Waveform Pulse Duration Voltage Waveform Propagation Delay Times Notes: A. Includes test lead and test apparatus capacitance. B. All pulses are supplied at pulse repetition rate ≤ 1 MHz C. The inputs are measured one at a time with one transition per measurement. D. For the open drain device tPLZ and tPZL are the same as tPD E. tPZL is measured at VM. D. tPLZ is measured at VOL +V∆ F. A Thevenin equivalent load may be used in place of VCC X 2 and resistor divider Figure 1 Load Circuit and Voltage Waveforms TEST Condition tPLZ (see Notes D and E) tPZL(see Notes D and F) Vload Vload |
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