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TXS0104E-Q1 Datasheet(PDF) 17 Page - Texas Instruments |
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TXS0104E-Q1 Datasheet(HTML) 17 Page - Texas Instruments |
17 / 25 page VCCB 1 2 3 4 5 6 7 14 13 12 11 10 9 8 A1 A2 A3 A4 NC GND OE NC B4 B3 B2 B1 VCCB VCCA VCCA LEGEND VIA to Power Plane VIA to GND Plane (Inner Layer) Polygonal Copper Pour To System To System To System To System To Controller To Controller To Controller To Controller Keep OE low until VCCA and VCCB are powered up Pads on signal paths for potential rise and fall time adjustments Bypass Capacitors TXS0104E-Q1 www.ti.com SCES853B – NOVEMBER 2013 – REVISED MAY 2014 11 Layout 11.1 Layout Guidelines To ensure reliability of the device, following common printed-circuit board layout guidelines is recommended. • Bypass capacitors should be used on power supplies. • Short trace lengths should be used to avoid excessive loading. • PCB signal trace-lengths must be kept short enough so that the round-trip delay of any reflection is less than the one shot duration, approximately 30 ns, ensuring that any reflection encounters low impedance at the source driver. • Placing pads on the signal paths for loading capacitors or pullup resistors to help adjust rise and fall times of signals depending on the system requirements 11.2 Layout Example Figure 13. TXS0104E-Q1 Layout Example Copyright © 2013–2014, Texas Instruments Incorporated Submit Documentation Feedback 17 Product Folder Links: TXS0104E-Q1 |
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