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TL16C750E Datasheet(PDF) 53 Page - Texas Instruments |
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TL16C750E Datasheet(HTML) 53 Page - Texas Instruments |
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53 / 59 page  VCC_UART C14 1 µF C15 0.1 µF C16 0.01 µF Copyright © 2017, Texas Instruments Incorporated 53 TL16C750E www.ti.com SLLSF10 – DECEMBER 2019 Product Folder Links: TL16C750E Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated 11 Power Supply Recommendations The power supply must provide a constant voltage with a 10% maximum variation of the nominal value and has to be able to provide at least the maximum current consumption of the device for the selected nominal voltage only for the UART device: • VCC = 1.8 V • VCC = 2.5 V • VCC = 3.3 V • VCC = 5 V The VCC pin must have a 1-µF bypass capacitor placed as close as possible to this pin. Also, TI recommends to include two extra capacitors in parallel, which should also be placed as close as possible to the VCC pin. The suggested values for these extra capacitors are 0.1 µF and 0.01 µF, respectively. Place as close as possible to the VCC pin of the UART. Figure 45. Recommended Bypass Capacitors Array 12 Layout 12.1 Layout Guidelines Traces, Vias, and Other PCB Components: A right angle in a trace can cause more radiation. The capacitance increases in the region of the corner, and the characteristic impedance changes. This impedance change causes reflections. • Avoid right-angle bends in a trace and try to route them at least with two 45° corners. To minimize any impedance change, the best routing would be a round bend (see Figure 28). • Separate high-speed signals (for example, clock signals) from low-speed signals and digital from analog signals; again, placement is important. • To minimize crosstalk not only between two signals on one layer but also between adjacent layers, route them with 90° to each other Figure 46. Layout Do's and Don'ts |
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