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MC74HC299 Datasheet(PDF) 4 Page - Motorola, Inc |
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MC74HC299 Datasheet(HTML) 4 Page - Motorola, Inc |
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4 / 8 page 
MC74HC299 MOTOROLA High–Speed CMOS Logic Data DL129 — Rev 6 3–4 TIMING REQUIREMENTS (Input tr = tf = 6 ns) Symbol Parameter VCC V Guaranteed Limit Unit Symbol Parameter VCC V – 55 to 25 _C v 85_C v 125_C Unit tsu Minimum Setup Time, Mode Select S1 or S2 to Clock (Figure 4) 2.0 4.5 6.0 100 20 17 125 25 21 150 30 26 ns tsu Minimum Setup Time, Data Inputs SA, SH, PA thru PH to Clock (Figure 4) 2.0 4.5 6.0 100 20 17 125 25 21 150 30 26 ns th Minimum Hold Time, Clock to Mode Select S1 or S2 (Figure 4) 2.0 4.5 6.0 120 24 20 150 30 26 180 36 31 ns th Minimum Hold Time, Clock to Data Inputs, SA, SH, PA thru PH (Figure 4) 2.0 4.5 6.0 5 5 5 5 5 5 5 5 5 ns trec Minimum Recovery Time, Reset Inactive to Clock (Figure 2) 2.0 4.5 6.0 50 10 9 65 13 11 75 15 13 ns tw Minimum Pulse Width, Clock (Figure 1) 2.0 4.5 6.0 80 16 14 100 20 17 120 24 20 ns tw Minimum Pulse Width, Reset (Figure 2) 2.0 4.5 6.0 80 16 14 100 20 17 120 24 20 ns tf, tf Maximum Input Rise and Fall Times (Figure 1) 2.0 4.5 6.0 1000 500 400 1000 500 400 1000 500 400 ns NOTE: Information on typical parametric values can be found in Chapter 2 of the Motorola High–Speed CMOS Data Book (DL129/D). |
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