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74VHC_VHCT245 データシート(PDF) 10 Page - NXP Semiconductors |
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74VHC_VHCT245 データシート(HTML) 10 Page - NXP Semiconductors |
10 / 16 page 74VHC_VHCT245_1 © NXP B.V. 2009. All rights reserved. Product data sheet Rev. 01 — 25 August 2009 10 of 16 NXP Semiconductors 74VHC245; 74VHCT245 Octal bus transceiver; 3-state Test data is given in Table 9. Definitions test circuit: RT = Termination resistance should be equal to output impedance Zo of the pulse generator. CL = Load capacitance including jig and probe capacitance. RL = Load resistance. S1 = Test selection switch. Fig 7. Load circuitry for measuring switching times VM VM tW tW 10 % 90 % 0 V VI VI negative pulse positive pulse 0 V VM VM 90 % 10 % tf tr tr tf 001aad983 DUT VCC VCC VI VO RT RL S1 CL open G Table 9. Test data Type Input Load S1 position VI tr, tf CL RL tPHL, tPLH tPZH, tPHZ tPZL, tPLZ 74VHC245 VCC ≤ 3.0 ns 15 pF, 50 pF 1 k Ω open GND VCC 74VHCT245 3.0 V ≤ 3.0 ns 15 pF, 50 pF 1 k Ω open GND VCC |
同様の部品番号 - 74VHC_VHCT245_15 |
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同様の説明 - 74VHC_VHCT245_15 |
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