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DM74S138 bảng dữ liệu(PDF) 4 Page - Fairchild Semiconductor |
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DM74S138 bảng dữ liệu(HTML) 4 Page - Fairchild Semiconductor |
4 / 5 page www.fairchildsemi.com 4 DM74S138 Switching Characteristics at VCC = 5V and TA = 25°C DM74S139 Switching Characteristics at VCC = 5V and TA = 25°C RL = 280Ω Symbol Parameter From (Input) Levels CL = 15 pF CL = 50 pF Units To (Output) of Delay Min Max Min Max tPLH Propagation Delay Time Select to Output 2 7 9 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time Select to Output 2 10.5 14 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time Select to Output 3 12 14 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time Select to Output 3 12 15 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time Enable to Output 2 8 10 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time Enable to Output 2 11 14 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time Enable to Output 3 11 13 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time Enable to Output 3 11 14 ns HIGH-to-LOW Level Output RL = 280Ω Symbol Parameter From (Input) Levels CL = 15 pF CL = 50 pF Units To (Output) of Delay Min Max Min Max tPLH Propagation Delay Time Select to Output 2 7.5 10 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time Select to Output 2 10 13 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time Select to Output 3 12 13 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time Select to Output 3 12 15 ns HIGH-to-LOW Level Output tPLH Propagation Delay Time Enable to Output 2 8 10 ns LOW-to-HIGH Level Output tPHL Propagation Delay Time Enable to Output 2 10 13 ns HIGH-to-LOW Level Output |
Số phần tương tự - DM74S138 |
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Mô tả tương tự - DM74S138 |
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