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CD54HC173 数据表(PDF) 2 Page - Texas Instruments |
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CD54HC173 数据表(HTML) 2 Page - Texas Instruments |
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2 / 20 page  2 Functional Diagram TRUTH TABLE INPUTS DATA OUTPUT MR CP DATA ENABLE E1 E2 D Qn H XXXX L L L XXX Q0 L ↑ HX X Q0 L ↑ XHX Q0 L ↑ LLLL L ↑ LL H H H= High Voltage Level L = Low Voltage Level X= Irrelevant ↑= Transition from Low to High Level Q0= Level Before the Indicated Steady-State Input Conditions Were Established NOTE: 1. When either OE1 or OE2 (or both) is (are) high, the output is dis- abled to the high-impedance state, however, sequential opera- tion of the flip-flops is not affected. 3 4 Q0 10 13 14 D1 D0 E2 E1 12 D2 11 D3 7 CP OE1 2 MR OE2 1 15 9 5 6 Q3 Q2 Q1 CD54HC173, CD74HC173, CD54HCT173, CD74HCT173 |
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