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MC145572PB Scheda tecnica(PDF) 5 Page - Motorola, Inc |
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MC145572PB Scheda tecnica(HTML) 5 Page - Motorola, Inc |
5 / 8 page MC74LCX240 LCX DATA BR1339 — REV 3 5 MOTOROLA WAVEFORM 1 – PROPAGATION DELAYS tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns 2.7V 0V VOH VOL 1Dn, 2Dn 1On, 2On tPLH tPHL WAVEFORM 2 – OUTPUT ENABLE AND DISABLE TIMES tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns 2.7V 0V ≈ 0V 1OE, 2OE 1On, 2On tPZH ≈ 3.0V tPHZ tPZL tPLZ 1On, 2On 1.5V 1.5V 1.5V 1.5V 1.5V 1.5V Figure 1. AC Waveforms 1.5V VCC VOH – 0.3V VOL + 0.3V GND OPEN PULSE GENERATOR RT DUT VCC RL R1 CL 6V GND TEST SWITCH tPLH, tPHL Open tPZL, tPLZ 6V Open Collector/Drain tPLH and tPHL 6V tPZH, tPHZ GND CL = 50pF or equivalent (Includes jig and probe capacitance) RL = R1 = 500Ω or equivalent RT = ZOUT of pulse generator (typically 50Ω) Figure 2. Test Circuit |
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