전자부품 데이터시트 검색엔진 |
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DM74AS244WM 데이터시트(PDF) 3 Page - Fairchild Semiconductor |
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DM74AS244WM 데이터시트(HTML) 3 Page - Fairchild Semiconductor |
3 / 5 page 3 www.fairchildsemi.com DM74AS240 Switching Characteristics over recommended operating free air temperature range DM74AS244 Switching Characteristics over recommended operating free air temperature range Symbol Parameter Conditions From To Min Max Units (Input) (Output) tPLH Propagation Delay Time VCC = 4.5V to 5.5V AY 2 6.5 ns LOW-to-HIGH Level Output R1 = R2 = 500Ω tPHL Propagation Delay Time CL = 50 pF AY 2 5.7 ns HIGH-to-LOW Level Output tPZL Output Enable to LOW Level G Y2 9 ns tPZH Output Enable to HIGH Level G Y2 6.4 ns tPLZ Output Disable from LOW Level G Y2 9.5 ns tPHZ Output Disable from HIGH Level G Y2 5 ns Symbol Parameter Conditions From To Min Max Units (Input) (Output) tPLH Propagation Delay Time VCC = 4.5V to 5.5V AY 2 6.2 ns LOW-to-HIGH Level Output R1 = R2 = 500Ω tPHL Propagation Delay Time CL = 50 pF AY 2 6.2 ns HIGH-to-LOW Level Output tPZL Output Enable to LOW Level G Y2 7.5 ns tPZH Output Enable to HIGH Level G Y2 9 ns tPLZ Output Disable from LOW Level G Y2 9 ns tPHZ Output Disable from HIGH Level G Y2 6 ns |
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