MC14521B ON Semiconductor, MC14521B Datasheet
MC14521B
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MC14521B Summary of contents
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... MC14521B 24-Stage Frequency Divider The MC14521B consists of a chain of 24 flip–flops with an input circuit that allows three modes of operation. The input will function as a crystal oscillator oscillator input buffer for an external oscillator. Each flip–flop divides the frequency of the previous flip– ...
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... RESET 2 STAGES THRU PIN PIN OUT2 DD OUT MC14521B PIN ASSIGNMENT Q24 RESET 2 15 Q23 Q22 SS OUT Q21 Q20 Q19 7 10 Q18 BLOCK DIAGRAM ...
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... The formulas given are for the typical characteristics only calculate total supply current at loads other than 50 pF (50 pF – 50) Vfk where (per package pF MC14521B (Voltages Referenced – Vdc Min Max Min V 5.0 — ...
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... Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance 500 Q18 PULSE IN 2 Q19 GENERATOR Q20 Q21 Q22 Q23 R Q24 Figure 1. Power Dissipation Test Circuit and Waveform MC14521B = pF Vdc Symbol TLH THL 5 PHL PLH 5 5.0 ...
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... Q19 IN 2 Q20 Q21 Q22 Q23 Q24 Optional for low power operation Figure 3. Crystal Oscillator Circuit MC14521B 50 Characteristic Crystal Characteristics Resonant Frequency Equivalent Resistance External Resistor/Capacitor Values R ...
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... OUT 1 OUT 2 Q18 Q19 IN 2 Q20 Q21 Q22 Q23 R Q24 Figure 7. RC Oscillator Circuit MC14521B 100 50 TEST CIRCUIT 20 FIGURE FUNCTION 120 k) 1.0 S 0.5 0 100 125 0 ...
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... The counter is now returned g to the normal 24–stages in series configuration. One more pulse is entered into Input 2 (In 2) which will cause the counter to ripple from an all “1” state to an all “0” state. MC14521B FUNCTIONAL TEST SEQUENCE Inputs Outputs Reset In 2 ...
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... OUT OUT Q18 Q19 MC14521B LOGIC DIAGRAM RESET 2 STAGES THRU 7 STAGES THRU Q20 Q21 Q22 Q23 http://onsemi.com PIN PIN 8 ...
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... SEATING –T– PLANE 0.25 (0.010 MC14521B PDIP–16 P SUFFIX NOTES: CASE 648–08 1. DIMENSIONING AND TOLERANCING PER ANSI ISSUE R Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL. 4. DIMENSION B DOES NOT INCLUDE MOLD FLASH. ...
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... G K –T– SEATING PLANE 0.25 (0.010 MC14521B PACKAGE DIMENSIONS SOIC–16 D SUFFIX PLASTIC SOIC PACKAGE CASE 751B–05 ISSUE 0.25 (0.010 http://onsemi.com 10 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14 ...
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... PLASTIC EIAJ SOIC PACKAGE VIEW 0.10 (0.004) 0.13 (0.005) M MC14521B PACKAGE DIMENSIONS SOEIAJ–16 F SUFFIX CASE 966–01 ISSUE O NOTES DETAIL P c http://onsemi.com 11 DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. ...
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... Email: ONlit–asia@hibbertco.com JAPAN: ON Semiconductor, Japan Customer Focus Center 4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan 141–8549 Phone: 81–3–5740–2745 Email: r14525@onsemi.com ON Semiconductor Website: http://onsemi.com For additional information, please contact your local Sales Representative. http://onsemi.com 12 MC14521B/D ...