전자부품 데이터시트 검색엔진 |
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74VCXH245MNR2G 데이터시트(PDF) 6 Page - ON Semiconductor |
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74VCXH245MNR2G 데이터시트(HTML) 6 Page - ON Semiconductor |
6 / 8 page 74VCXH245 http://onsemi.com 6 WAVEFORM 1 − PROPAGATION DELAYS tR = tF = 2.0 ns, 10% to 90%; f = 1 MHz; tW = 500 ns VIH 0 V VOH VOL An, Bn Bn, An tPHL tPLH WAVEFORM 2 − OUTPUT ENABLE AND DISABLE TIMES tR = tF = 2.0 ns, 10% to 90%; f = 1 MHz; tW = 500 ns VIH 0 V ≈ 0V OEn, T/Rn An, Bn tPZH ≈ VCC tPHZ tPZL tPLZ An, Bn Vm Vm Vm Vm Vm Vm Figure 3. AC Waveforms Vm VOH Vy Vx VOL Vm VCC Symbol 3.3 V ± 0.3 V 2.5 V ± 0.2 V 1.8 V ± 0.15 V VIH 2.7 V VCC VCC Vm 1.5 V VCC/2 VCC/2 Vx VOL + 0.3 V VOL + 0.15 V VOL + 0.15 V Vy VOH − 0.3 V VOH − 0.15 V VOH − 0.15 V OPEN PULSE GENERATOR RT DUT VCC RL RL CL 6 V or VCC × 2 GND TEST SWITCH tPLH, tPHL Open tPZL, tPLZ 6 V at VCC = 3.3 ± 0.3 V; VCC× 2 at VCC = 2.5 ± 0.2 V; 1.8 V ± 0.15 V tPZH, tPHZ GND CL = 30 pF or equivalent (Includes jig and probe capacitance) RL = 500 W or equivalent RT = ZOUT of pulse generator (typically 50 W) Figure 4. Test Circuit |
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