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CD74HC192E 数据表(PDF) 8 Page - Texas Instruments |
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CD74HC192E 数据表(HTML) 8 Page - Texas Instruments |
8 / 21 page 8 Test Circuits and Waveforms FIGURE 1. ’HC192 SYNCHRONOUS DECADE COUNTERS, TYPICAL RESET, PRESET AND COUNT SEQUENCES MASTER RESET ASYNCHRONOUS PARALLEL LOAD PRESET DATA P0 P1 P2 P3 CLOCK UP CLOCK DOWN OUTPUTS Q0 Q1 Q2 Q3 TERMINAL COUNT UP TERMINAL COUNT DOWN 07 89012 COUNT DOWN COUNT UP RESET 10987 PRESET SEQUENCES: 1. RESET OUTPUTS TO ZERO. 2. LOAD (PRESET) TO BCD SEVEN. TERMINAL COUNT UP, ZERO, 3. COUNT UP TO EIGHT, NINE, ONE AND TWO. 4. COUNT DOWN TO ONE, ZERO, TERMINAL COUNT DOWN, NINE, EIGHT AND SEVEN. CD54/74HC192, CD54/74HC193, CD54/74HCT193 |
类似零件编号 - CD74HC192E |
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类似说明 - CD74HC192E |
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