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MC14558BCL Folha de dados(PDF) 3 Page - Motorola, Inc |
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MC14558BCL Folha de dados(HTML) 3 Page - Motorola, Inc |
3 / 7 page MOTOROLA CMOS LOGIC DATA 3 MC14558B SWITCHING CHARACTERISTICS* (CL = 50 pF, TA = 25_C; see Figure 1) Characteristic Symbol VDD Min Typ Max Unit Output Rise Time tTLH = (3.0 ns/pF) CL + 30 ns tTLH = (1.5 ns/pF) CL + 15 ns tTLH = (1.1 ns/pF) CL + 10 ns tTLH 5.0 10 15 — — — 100 50 40 200 100 80 ns Output Fall Time tTHL = (1.5 ns/pF) CL + 25 ns tTHL = (0.75 ns/pF) CL + 12.5 ns tTHL = (0.55 ns/pF) CL + 9.5 ns tTHL 5.0 10 15 — — — 100 50 40 200 100 80 ns Propagation Delay Time tPLH = (1.7 ns/pF) CL + 495 ns tPLH = (0.66 ns/pF) CL + 187 ns tPLH = (0.5 ns/pF) CL + 120 ns tPLH 5.0 10 15 — — — 580 220 145 1160 440 230 ns Propagation Delay Time tPHL = (1.7 ns/pF) CL + 695 ns tPHL = (0.66 ns/pF) CL + 242 ns tPHL = (0.5 ns/pF) CL + 160 ns tPHL 5.0 10 15 — — 780 275 185 1560 550 370 ns * The formulae given are for the typical characteristics only. TRUTH TABLE Inputs Outputs* Enable Pin 3 RBI Pin 5 D Pin 6 C Pin 2 B Pin 1 A Pin 7 a Pin 13 b Pin 12 c Pin 11 d Pin 10 e Pin 9 f Pin 15 g Pin 14 RBO Pin 4 Display 1 1 0 0 0 0 1 1 1 1 1 1 0 1 1 X 0 0 0 1 0 0 0 0 1 1 0 1 1 X 0 0 1 0 1 1 0 1 1 0 1 1 1 X 0 0 1 1 1 1 1 1 0 0 1 1 1 X 0 1 0 0 0 1 1 0 0 1 1 1 1 X 0 1 0 1 1 0 1 1 0 1 1 1 1 X 0 1 1 0 0 0 1 1 1 1 1 1 1 X 0 1 1 1 1 1 1 0 0 0 0 1 1 X 1 0 0 0 1 1 1 1 1 1 1 1 1 X 1 0 0 1 1 1 1 0 0 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 Blank 0 0 X X X X 1 1 1 1 1 1 1 0 0 1 X X X X 0 0 0 0 0 0 0 1 Blank * All non–valid BCD input codes produce a blank display. X = Don’t Care Figure 1. Signal Waveforms 20 ns 20 ns 10% 90% 50% tPLH tPHL 50% 10% 90% tTLH tTHL ANY OUTPUT ANY INPUT |
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