전자부품 데이터시트 검색엔진 |
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74LVCH322244A 데이터시트(PDF) 9 Page - NXP Semiconductors |
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74LVCH322244A 데이터시트(HTML) 9 Page - NXP Semiconductors |
9 / 16 page 1999 Aug 31 9 Philips Semiconductors Product specification 32-bit buffer/line driver; with 30 Ω series termination resistors; 5 V input/output tolerant; 3-state 74LVC322244A; 74LVCH322244A Fig.5 3-state enable and disable times. VM = 1.5 V at VCC ≥ 2.7 V or VM = 0.5 × VCC at VCC < 2.7 V; VX =VOL + 0.3 V at VCC ≥ 2.7 V or VX =VOL + 0.1 V at VCC < 2.7 V; VY =VOH − 0.3VatVCC ≥ 2.7 V or VY =VOH − 0.1VatVCC < 2.7 V. VOL and VOH are typical output voltage drop that occur with the output load. handbook, full pagewidth MNA478 tPLZ tPHZ outputs disabled outputs enabled VY VX outputs enabled OUTPUT LOW-to-OFF OFF-to-LOW OUTPUT HIGH-to-OFF OFF-to-HIGH nOE INPUT VI VOL VOH VCC VM GND GND tPZL tPZH VM VM Fig.6 Load circuitry for switching times. Definitions for test circuit: RL = load resistor. CL = load capacitance including jig and probe capacitance. RT = termination resistance should be equal to the output impedance Zo of the pulse generator. TEST S1 tPLH/tPHL open tPLZ/tPZL 2 × VCC tPHZ/tPZH GND VCC VI < 2.7 V VCC 2.7 to 3.6 V 2.7 V handbook, full pagewidth open GND 50 pF 2 × VCC VCC VI VO MNA479 D.U.T. CL RL RT 500 Ω RL 500 Ω PULSE GENERATOR S1 |
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