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FSTU3384 Scheda tecnica(PDF) 3 Page - Fairchild Semiconductor |
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FSTU3384 Scheda tecnica(HTML) 3 Page - Fairchild Semiconductor |
3 / 5 page 3 www.fairchildsemi.com AC Electrical Characteristics Note 6: This parameter is guaranteed by design but not tested. The bus switch contributes no propagation delay other than the RC delay of the typical On resistance of the switch and the 50pF load capacitance, when driven by an ideal voltage the source (zero output impedance). Capacitance (Note 7) Note 7: Capacitance is characterized but not tested. AC Loading and Waveforms Note: Input driven by 50 Ω source terminated in 50 Ω, RU = RD = 500 Ω Note: CL includes load and stray capacitance, CL= 50 pF Note: Input PRR = 1.0 MHz, t W = 500 nS FIGURE 1. AC Test Circuit FIGURE 2. AC Waveforms Symbol Parameter TA = −40°C to +85°C CL = 50 pF, RU = RD = 500Ω Units Conditions Figure No. VCC = 4.5 − 5.5V VCC = 4.0V Min Max Min Max tPHL, tPLH Prop Delay Bus to Bus (Note 6) 0.25 0.25 ns VI = OPEN Figure 1, Figure 2 tPZH, tPZL Output Enable Time 1.0 5.7 6.2 ns VI = 7V for tPZL Figure 1, Figure 2 OEA, OEB to An, Bn VI = OPEN for tPZH tPHZ, tPLZ Output Disable Time 1.5 5.2 5.5 ns VI = 7V for tPLZ Figure 1, Figure 2 OEA, OEB to An, Bn VI = OPEN for tPHZ Symbol Parameter Typ Max Units Conditions CIN Control Input Capacitance 3 pF VCC = 5.0V CI/O (OFF) Input/Output Capacitance 5 pF VCC, OE = 5.0V |
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