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74LCX374WMX bảng dữ liệu(PDF) 2 Page - National Semiconductor (TI) |
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74LCX374WMX bảng dữ liệu(HTML) 2 Page - National Semiconductor (TI) |
2 / 8 page Functional Description The LCX374 consists of eight edge-triggered flip-flops with individual D-type inputs and TRI-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 re- quirements 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 the 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 Truth Table Inputs Outputs Dn CP OE On H L LH L L LL XL L O0 XX H Z H e HIGH Voltage Level L e LOW Voltage Level X e Immaterial Z e High Impedance L e LOW-to-HIGH Transition O0 e Previous O0 before HIGH to LOW of CP Logic Diagram TLF11996 – 4 Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays http www nationalcom 2 |
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