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MC74AC57 Folha de dados(PDF) 2 Page - Motorola, Inc |
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MC74AC57 Folha de dados(HTML) 2 Page - Motorola, Inc |
2 / 8 page MC74AC57 MC74ACT574 5-2 FACT DATA FUNCTIONAL DESCRIPTION The MC74AC574/74ACT574 consists of eight edge- triggered flip-flops with individual D-type inputs and 3-state true outputs. The buffered clock and buffered Output Enable are common to all flip-flops. The eight flip-flops will store the state of their individual D inputs that meet the setup and hold time requirements on the LOW-to-HIGH Clock (CP) transition. With the Output Enable (OE) LOW, the contents of the eight flip-flops are available at the outputs. When OE is HIGH, the outputs go to the high impedance state. Operation of the OE input does not affect the state of the flip-flops. FUNCTION TABLE Inputs Internal Outputs Function OE CP D Q On Function H H L NC Z Hold H H H NC Z Hold H L L Z Load H H H Z Load L L L L Data Available L H H H Data Available L H L NC NC No Change in Data L H H NC NC No Change in Data H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance = LOW-to-HIGH Clock Transition NC = No Change LOGIC DIAGRAM D0 D1 D2 D3 D4 D5 D6 D7 C D Q O0 O1 O2 O3 O4 O5 O6 O7 OE CP C D Q C D Q C D Q C D Q C D Q C D Q C D Q Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. |
Nº de peça semelhante - MC74AC57 |
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Descrição semelhante - MC74AC57 |
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