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MC14538BCP Fiches technique(PDF) 3 Page - Motorola, Inc |
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MC14538BCP Fiches technique(HTML) 3 Page - Motorola, Inc |
3 / 10 page ![]() MOTOROLA CMOS LOGIC DATA 3 MC14538B SWITCHING CHARACTERISTICS* (CL = 50 pF, TA = 25_C) Characteristic Symbol VDD Vdc All Types Unit Characteristic Symbol VDD Vdc Min Typ # Max Unit Output Rise Time tTLH = (1.35 ns/pF) CL + 33 ns tTLH = (0.60 ns/pF) CL + 20 ns tTLH = (0.40 ns/pF) CL + 20 ns tTLH 5.0 10 15 — — — 100 50 40 200 100 80 ns Output Fall Time tTHL = (1.35 ns/pF) CL + 33 ns tTHL = (0.60 ns/pF) CL + 20 ns tTHL = (0.40 ns/pF) CL + 20 ns tTHL 5.0 10 15 — — — 100 50 40 200 100 80 ns Propagation Delay Time A or B to Q or Q tPLH, tPHL = (0.90 ns/pF) CL + 255 ns tPLH, tPHL = (0.36 ns/pF) CL + 132 ns tPLH, tPHL = (0.26 ns/pF) CL + 87 ns tPLH, tPHL 5.0 10 15 — — — 300 150 100 600 300 220 ns Reset to Q or Q tPLH, tPHL = (0.90 ns/pF) CL + 205 ns tPLH, tPHL = (0.36 ns/pF) CL + 107 ns tPLH, tPHL = (0.26 ns/pF) CL + 82 ns 5.0 10 15 — — — 250 125 95 500 250 190 ns Input Rise and Fall Times Reset tr, tf 5 10 15 — — — — — — 15 5 4 µs B Input 5 10 15 — — — 300 1.2 0.4 1.0 0.1 0.05 ms A Input 5 10 15 No Limit — Input Pulse Width A, B, or Reset tWH, tWL 5.0 10 15 170 90 80 85 45 40 — — — ns Retrigger Time trr 5.0 10 15 0 0 0 — — — — — — ns Output Pulse Width — Q or Q Refer to Figures 8 and 9 CX = 0.002 µF, RX = 100 kΩ T 5.0 10 15 198 200 202 210 212 214 230 232 234 µs CX = 0.1 µF, RX = 100 kΩ 5.0 10 15 9.3 9.4 9.5 9.86 10 10.14 10.5 10.6 10.7 ms CX = 10 µF, RX = 100 kΩ 5.0 10 15 0.91 0.92 0.93 0.965 0.98 0.99 1.03 1.04 1.06 s Pulse Width Match between circuits in the same package. CX = 0.1 µF, RX = 100 kΩ 100 [(T1 – T2)/T1] 5.0 10 15 — — — ± 1.0 ± 1.0 ± 1.0 ± 5.0 ± 5.0 ± 5.0 % * The formulas given are for the typical characteristics only at 25 _C. #Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance. OPERATING CONDITIONS External Timing Resistance RX — 5.0 — k Ω External Timing Capacitance CX — 0 — No Limit† µF * The maximum usable resistance RX is a function of the leakage of the capacitor CX, leakage of the MC14538B, and leakage due to board layout and surface resistance. Susceptibility to externally induced noise signals may occur for RX > 1 MΩ.. †If CX > 15 µF, use discharge protection diode per Fig. 11. |
Numéro de pièce similaire - MC14538BCP |
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Description similaire - MC14538BCP |
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