전자부품 데이터시트 검색엔진 |
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74LCX138MX 데이터시트(PDF) 5 Page - Fairchild Semiconductor |
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74LCX138MX 데이터시트(HTML) 5 Page - Fairchild Semiconductor |
5 / 12 page 5 www.fairchildsemi.com AC Electrical Characteristics Note 6: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The specification applies to any outputs switching in the same direction, either HIGH-to-LOW (tOSHL) or LOW-to-HIGH (tOSLH). Dynamic Switching Characteristics Capacitance Symbol Parameter TA = −40°C to +85°C, RL = 500Ω Units VCC = 3.3V ± 0.3V VCC = 2.7V VCC = 2.5V ± 0.2V CL = 50pF CL = 50pF CL = 30pF Min Max Min Max Min Max tPHL Propagation Delay 1.5 6.0 1.5 7.0 1.5 7.2 ns tPLH An to Qn 1.5 6.0 1.5 7.0 1.5 7.2 tPHL Propagation Delay 1.5 6.5 1.5 7.5 1.5 8.4 ns tPLH E3 to Qn 1.5 6.5 1.5 7.5 1.5 8.4 tPHL Propagation Delay 1.5 6.0 1.5 7.0 1.5 7.2 ns tPLH E1 or E2 to Qn 1.5 6.0 1.5 7.0 1.5 7.2 tOSHL Output to Output Skew (Note 6) 1.0 ns tOSLH 1.0 Symbol Parameter Conditions VCC TA = 25°C Units (V) Typical VOLP Quiet Output Dynamic Peak VOL CL = 50 pF, VIH = 3.3V, VIL = 0V 3.3 0.8 V CL = 30 pF, VIH = 2.5V, VIL = 0V 2.5 0.6 VOLV Quiet Output Dynamic Valley VOL CL = 50 pF, VIH = 3.3V, VIL = 0V 3.3 −0.8 V CL = 30 pF, VIH = 2.5V, VIL = 0V 2.5 −0.6 Symbol Parameter Conditions Typical Units CIN Input Capacitance VCC = Open, VI = 0V or VCC 7.0 pF COUT Output Capacitance VCC = 3.3V, VI = 0V or VCC 8.0 pF CPD Power Dissipation Capacitance VCC = 3.3V, VI = 0V or VCC, f = 10 MHz 25.0 pF |
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