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MC145004 Scheda tecnica(PDF) 3 Page - Motorola, Inc |
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MC145004 Scheda tecnica(HTML) 3 Page - Motorola, Inc |
3 / 14 page MC145003 • MC145004 3 MOTOROLA ELECTRICAL CHARACTERISTICS (Continued) Ch i i Sb l VDD VLCD 40 °C 25 °C 85 °C Ui Characteristic Symbol VDD V VLCD V Min Max Min Max Min Max Unit Output Drive Current — Backplanes VO = 2.65 V IBH* IBL 5 5 2.8 2.8 – 290 – 290 — — – 240 – 240 — — – 240 – 240 — — µA VO = 0.15 V IBH IBL 5 5 2.8 2.8 310 310 — — 260 260 — — 230 230 — — VO = 1.08V IBH IBL 5 5 2.8 2.8 90 — — 1 40 — — 2 55 — — 1 VO = 1.72 V IBH IBL 5 5 2.8 2.8 –90 — — – 1.5 –40 — — –1 –60 — — –1 VO = 5.35 V IBH IBL 5 5 5.5 5.5 – 490 – 490 — — – 520 – 520 — — – 520 – 520 — — VO = 0.15 V IBH IBL 5 5 5.5 5.5 600 600 — — 600 600 — — 580 580 — — VO = 1.98 V IBH IBL 5 5 5.5 5.5 100 — — 1.5 55 — — 1 70 — — 1 VO = 3.52 V IBH IBL 5 5 5.5 5.5 – 100 — — –1 –35 — — –1 –50 — — –1 Pulse Width, Data Clock (Figure 1) tw 5 3 50 100 — — ns DCLK Rise/Fall Time (Figure 1) tr, tf 5 3 — — 20 120 µs Setup Time, Din to DCLK (Figure 2) tsu 5 3 0 0 — — ns Hold Time, Din to DCLK (Figure 2) th 5 3 30 60 — — ns DCLK Low to ENB High (Figure 3) th 5 3 10 20 — — ns ENB High to DCLK High (Figure 3) trec 5 3 10 20 — — ns ENB High Pulse Width (Figure 3) tw 5 3 50 100 — — ns ENB Low to DCLK High (Figure 3) tsu 5 3 10 20 — — ns NOTE: Timing for Figures 1, 2, and 3 are design estimates only. * For a time (t = 4/OSC FREQ.) after the backplane waveform changes to a new voltage level, the circuit is maintained in the high–current state to allow the load capacitances to charge quickly. The circuit is then returned to the low–current state until the next voltage change. SWITCHING WAVEFORMS VDD GND CLK 90% 50% 10% tw tw tf tr Figure 1. Din CLK 50% VALID 50% tsu th VDD GND VDD GND Figure 2. tsu th trec tw tw VDD GND VDD GND CLK ENB FIRST CLK LAST CLK Figure 3. 50% 50% |
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