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74F534 数据表(PDF) 2 Page - Fairchild Semiconductor |
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74F534 数据表(HTML) 2 Page - Fairchild Semiconductor |
2 / 6 page www.fairchildsemi.com 2 Unit Loading/Fan Out Function Table H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance = LOW-to-HIGH Clock Transition O0 = Value stored from previous clock cycle Functional Description The 74F534 consists of eight edge-triggered flip-flops with individual D-type inputs and 3-STATE complementary out- puts. 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 times 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 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. 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. Pin Names Description U.L. Input IIH/IIL HIGH/LOW Output IOH/IOL D0–D7 Data Inputs 1.0/1.0 20 µA/−0.6 mA CP Clock Pulse Input (Active Rising Edge) 1.0/1.0 20 µA/−0.6 mA OE 3-STATE Output Enable Input (Active LOW) 1.0/1.0 20 µA/−0.6 mA O0–O7 Complementary 3-STATE Outputs 150/40(33.3) −3 mA/24 mA (20 mA) Inputs Output CP OE DO LH L LL H LL X O0 XH X Z |
类似零件编号 - 74F534 |
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类似说明 - 74F534 |
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