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MC14541BDTR2G bảng dữ liệu(PDF) 4 Page - ON Semiconductor |
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4 / 9 page MC14541B http://onsemi.com 4 SWITCHING CHARACTERISTICS (Note 5) (CL = 50 pF, TA = 25_C) Characteristic Symbol VDD Min Typ (Note 6) Max Unit Output Rise and Fall Time tTLH, tTHL = (1.5 ns/pF) CL + 25 ns tTLH, tTHL = (0.75 ns/pF) CL + 12.5 ns tTLH, tTHL = (0.55 ns/pF) CL + 9.5 ns tTLH, tTHL 5.0 10 15 − − − 100 50 40 200 100 80 ns Propagation Delay, Clock to Q (28 Output) tPLH, tPHL = (1.7 ns/pF) CL + 3415 ns tPLH, tPHL = (0.66 ns/pF) CL + 1217 ns tPLH, tPHL = (0.5 ns/pF) CL + 875 ns tPLH tPHL 5.0 10 15 − − − 3.5 1.25 0.9 10.5 3.8 2.9 ms Propagation Delay, Clock to Q (216 Output) tPHL, tPLH = (1.7 ns/pF) CL + 5915 ns tPHL, tPLH = (0.66 ns/pF) CL + 3467 ns tPHL, tPLH = (0.5 ns/pF) CL + 2475 ns tPHL tPLH 5.0 10 15 − − − 6.0 3.5 2.5 18 10 7.5 ms Clock Pulse Width tWH(cl) 5.0 10 15 900 300 225 300 100 85 − − − ns Clock Pulse Frequency (50% Duty Cycle) fcl 5.0 10 15 − − − 1.5 4.0 6.0 0.75 2.0 3.0 MHz MR Pulse Width tWH(R) 5.0 10 15 900 300 225 300 100 85 − − − ns Master Reset Removal Time trem 5.0 10 15 420 200 200 210 100 100 − − − ns 5. The formulas given are for the typical characteristics only at 25 _C. 6. Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance. Figure 1. Power Dissipation Test Circuit and Waveform Figure 2. Switching Time Test Circuit and Waveforms PULSE GENERATOR VDD CL Q RS AR Q/Q SELECT MODE A B MR VSS 20 ns 20 ns 90% 50% 10% 50% DUTY CYCLE (Rtc AND Ctc OUTPUTS ARE LEFT OPEN) PULSE GENERATOR VDD RS AR Q/Q SELECT MODE A B MR VSS CL Q 20 ns 90% 50% 20 ns 10% RS Q tPLH 50% 90% 50% 10% 50% tTLH tTHL tPHL |
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