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Texas Instruments provides a recommended PCB layout in the datasheet, but it's essential to follow good high-speed design practices, such as using a solid ground plane, minimizing trace lengths, and using 50-ohm transmission lines.
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To ensure signal integrity, use a controlled impedance PCB, minimize signal reflections, and use termination resistors at the receiver end. Also, consider using a signal integrity analysis tool to simulate and optimize your design.
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The maximum cable length depends on the specific application and the type of cable used. As a general guideline, the DS90CR285MTD/NOPB can support cable lengths up to 10 meters at 1.5 Gbps and 5 meters at 3 Gbps. However, it's recommended to consult the datasheet and perform signal integrity analysis for specific applications.
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Yes, the DS90CR285MTD/NOPB can be used in a multi-drop bus configuration, but it's essential to ensure that the total bus capacitance does not exceed the recommended maximum value. Additionally, consider using a repeater or a buffer to maintain signal integrity.
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To troubleshoot issues, use a logic analyzer or an oscilloscope to capture and analyze the signal waveforms. Check for signal integrity issues, such as reflections, ringing, or attenuation. Consult the datasheet and application notes for troubleshooting guidelines and common pitfalls to avoid.