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74LV251PWDH Arkusz danych(PDF) 7 Page - NXP Semiconductors |
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74LV251PWDH Arkusz danych(HTML) 7 Page - NXP Semiconductors |
7 / 12 page Philips Semiconductors Product specification 74LV251 8-input multiplexer (3-State) 1998 May 20 7 AC WAVEFORMS VM = 1.5 V at VCC ≥ 2.7 V VM = 0.5 V × VCC at VCC < 2.7 V VOL and VOH are the typical output voltage drop that occur with the output load. VX = VOL + 0.3 V at VCC ≥ 2.7 V VX = VOL + 0.1 × VCC at VCC < 2.7 V VY = VOH – 0.3 V at VCC ≥ 2.7V VY = VOH – 0.1 × VCC at VCC < 2.7 V SV00633 V M V M In, Sn INPUT Y OUTPUT GND V OL V CC V OH tPLH tPHL Figure 1. Multiplexer input (In) and select input (Sn) to output (Y) propagation delays. SV00634 V M V M In, Sn INPUT Y OUTPUT GND V OL V CC V OH tPLH tPHL Figure 2. Multiplexer input (In) and the select input (Sn) to output (Y) propagation delays. SV00635 OUTPUT HIGH-to-OFF OFF-to-HIGH OUTPUT LOW-to-OFF OFF-to-LOW outputs disabled outputs enabled outputs enabled tPHZ tPZH tPZL tPLZ VX VOL VOH VY GND GND VCC VCC VM VM VM OE INPUT Figure 3. 3-State enable and disable times TEST CIRCUIT PULSE GENERATOR RT VI D.U.T. VO CL RL= 1KΩ VCC Test Circuit for switching times DEFINITIONS VCC VI < 2.7V VCC TEST tPLH/tPHL RT = Termination resistance should be equal to ZOUT of pulse generators. 2.7V 2.7–3.6V SV00776 50pF RL = Load resistor CL = Load capacitance includes jig and probe capacitance Figure 4. Load circuitry for switching times. |
Podobny numer części - 74LV251PWDH |
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Podobny opis - 74LV251PWDH |
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