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전자부품 데이터시트 검색엔진 |
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74VHC245SJX 데이터시트(PDF) 3 Page - Fairchild Semiconductor |
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74VHC245SJX 데이터시트(HTML) 3 Page - Fairchild Semiconductor |
3 / 7 page ![]() 3 www.fairchildsemi.com Noise Characteristics Note 3: Parameter guaranteed by design. AC Electrical Characteristics Note 4: Parameter guaranteed by design. tOSLH |tPLH max tPLH min|; tOSHL |tPHL max tPHL min| Note 5: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load. Average operating current can be obtained by the equation: ICC (opr.) CPD * VCC * fIN ICC/8 (per Bit). Symbol Parameter VCC TA 25qC Units Conditions (V) Typ Limits VOLP Quiet Output Maximum 5.0 0.9 1.2 V CL 50 pF (Note 3) Dynamic VOL VOLV Quiet Output Minimum 5.0 0.9 1.2 V CL 50 pF (Note 3) Dynamic VOL VIHD Minimum HIGH Level 5.0 3.5 V CL 50 pF (Note 3) Dynamic Input Voltage VILD Maximum LOW Level 5.0 1.5 V CL 50 pF (Note 3) Dynamic Input Voltage Symbol Parameter VCC TA 25qCTA 40qC to 85qC Units Conditions (V) Min Typ Max Min Max tPLH Propagation Delay 3.3 r 0.3 5.8 8.4 1.0 10.0 ns CL 15 pF tPHL Time 8.3 11.9 1.0 13.5 CL 50 pF 5.0 r 0.5 4.0 5.5 1.0 6.5 ns CL 15 pF 5.5 7.5 1.0 8.5 CL 50 pF tPZL 3-STATE Output 3.3 r 0.3 8.5 13.2 1.0 15.5 ns RL 1 k: CL 15 pF tPZH Enable Time 11.0 16.7 1.0 19.0 CL 50 pF 5.0 r 0.5 5.8 8.5 1.0 10.0 ns CL 15 pF 7.3 10.6 1.0 12.0 CL 50 pF tPLZ 3-STATE Output 3.3 r 0.3 11.5 15.8 1.0 18.0 ns RL 1 k: CL 50 pF tPHZ Disable Time 5.0 r 0.5 7.0 9.7 1.0 11.0 CL 50 pF tOSLH Output to Output 3.3 r 0.3 1.5 1.5 ns (Note 4) CL 50 pF tOSHL Skew 5.0 r 0.5 1.0 1.0 CL 50 pF CIN Input Capacitance 4 10 10 pF VCC Open (T/R, OE) CI/O Output Capacitance 8 pF VCC 5.0V CPD Power Dissipation 21 pF (Note 5) Capacitance |
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