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74LVX138M 数据表(PDF) 2 Page - Fairchild Semiconductor |
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74LVX138M 数据表(HTML) 2 Page - Fairchild Semiconductor |
2 / 7 page www.fairchildsemi.com 2 Functional Description The LVX138 high-speed 1-of-8 decoder/demultiplexer accepts three binary weighted inputs (A0, A1, A2) and, when enabled, provides eight mutually exclusive active- LOW outputs (O0–O7). The LVX138 features three Enable inputs, two active-LOW (E1, E2) and one active-HIGH (E3). All outputs will be HIGH unless E1 and E2 are LOW and E3 is HIGH. The LVX138 can be used as an 8-output demultiplexer by using one of the active LOW Enable inputs as the data input and the other Enable inputs as strobes. The Enable inputs which are not used must be permanently tied to their appropriate active-HIGH or active-LOW state. Truth Table H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Logic Diagram Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. Inputs Outputs E1 E2 E3 A0 A1 A2 O0 O1 O2 O3 O4 O5 O6 O7 H X X X X X HHH HHH HH X H X X X X HHH HHH HH X X L X X X HHH HHH HH L L H L L L L H H HHH HH L L H H L L H L H HHH HH L L H L H L HH L HHH HH L L HH H L H H H L H HH H L L H L L H HHH H L H H H L L H H L H HHH HH L H H L L H L HH HHH HHH L H L L H HHH HHH HHH H L |
类似零件编号 - 74LVX138M |
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类似说明 - 74LVX138M |
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