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74LVC125AD Folha de dados(PDF) 6 Page - NXP Semiconductors |
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74LVC125AD Folha de dados(HTML) 6 Page - NXP Semiconductors |
6 / 10 page Philips Semiconductors Product specification 74LVC125A Quad buffer/line driver with 5-volt tolerant inputs/outputs (3-state) 1998 Apr 28 6 AC WAVEFORMS VM = 1.5 V at VCC w 2.7 V; VM = 0.5 S 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 V at VCC > 2.7 V VY = VOH – 0.3 V at VCC ≥ 2.7 V VY = VOH – 0.1 V at VCC < 2.7 V SV00459 VM nA INPUT nY OUTPUT VM tPLH t PHL GND Vl V OL V OH Figure 1. Input (nA) to output (nY) propagation delays. SV00458 outputs disabled outputs enabled outputs enabled tPHZ tPZH tPZL tPLZ VX VY VM VM nOE Input VI GND VCC VOL VOH GND OUTPUT HIGH-to-OFF OFF-to-HIGH OUTPUT LOW-to-OFF OFF-to-LOW VM Figure 2. 3-state enable and disable times. TEST CIRCUIT PULSE GENERATOR RT VIN D.U.T. VOUT CL VCC RL=500 Ω SWITCH POSITION TEST SWITCH tPLH/tPHL Open tPLZ/tPZL 2 <VCC tPHZ/tPZH GND Test Circuit for 3-State Outputs Open GND S1 2 <VCC DEFINITIONS VCC t 2.7V 2.7 – 3.6V VIN VCC 2.7V RL = Load resistor CL = Load capacitance includes jig and probe capacitance RT = Termination resistance should be equal to ZOUT of pulse generators. SW00047 RL=500 Ω Figure 3. Load circuitry for switching times. |
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Descrição semelhante - 74LVC125AD |
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