поискавой системы для электроныых деталей |
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CD74HC4059E датащи(PDF) 3 Page - Texas Instruments |
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CD74HC4059E датащи(HTML) 3 Page - Texas Instruments |
3 / 14 page 3 How to Preset the HC/HCT4059 to Desired ÷N The value N is determined as follows: To calculate preset values for any N count, divide the N count by the Mode. The resultant is the corresponding preset values of the 5th through 2nd decade with the remainder being equal to the 1st decade value. NOTE: To verify the results, use Equation 1: N = 5 (1000 x 1 + 100 x 6 + 10 x 9 + 1 x 5) + 4 N = 8479 N = (MODE†) (1000 x Decade 5 Preset + 100 x Decade 4 Preset + 10 x Decade 3 Preset + 1 x Decade 2 Preset) + Decade 1 Preset † MODE = First counting section divider (10, 8, 5, 4 or 2) (EQ. 1) Preset Value = N Mode Example: N = 8479, Mode = 5 1695 + 4 (Preset Values) 5 | 8479 Mode N Mode Select = 5 Ka Kb Kc HLH (EQ. 2) Program Jam Inputs (BCD) J1 J2 J3 J4 L L H H 41 J5 J6 J7 J8 H L H L 5 J9 J10 J11 J12 HLLH 9 J13 J14 J15 J16 LHHL 6 FIGURE 1. FUNCTIONAL BLOCK DIAGRAM FIRST COUNTING SECTION ÷10, 8, 5, 4, 2 LAST COUNTING SECTION ÷1, 2, 2, 4, 8 ÷10 ÷10 ÷10 RECOGNITION GATING PRESET ENABLE INTERMEDIATE COUNTING SECTION OUTPUT STAGE MODE CONTROL PRESETTABLE LOGIC GND VCC 12 24 CLOCK 1 INPUT MODE 14 13 11 Ka Kb Kc SELECT INPUTS LATCH 2 ENABLE DIVIDE-BY-N 23 OUTPUT P.E. J1 3 J2 4 J3 5 J4 6 J5 22 J6 21 J7 20 J8 19 J9 18 J10 17 J11 16 J12 15 J13 10 J14 9 J15 8 J16 7 PROGRAM JAM INPUTS (BCD) CD54HC4059, CD74HC4059 CD54HC4059, CD74HC4059 |
Аналогичный номер детали - CD74HC4059E |
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Аналогичное описание - CD74HC4059E |
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