Description:The 5V41068A is a 2:1 differential clock mux for PCI Express applications. It has very low additive jitter making it suitable for use in PCIe Gen2 and Gen3 systems. The 5V41068A selects between 1 of 2 differential HCSL inputs to drive a single differential HCSL output pair. The output can also be terminated to LVDS.
Renesas provides a recommended PCB layout guide in their application note (AP-6101) for the 5V41068APGGI, which includes thermal vias, heat sink recommendations, and PCB layer stack-up suggestions to minimize thermal resistance and ensure reliable operation.
Renesas recommends using an external power sequencer, such as the ISL6123, to control the power-up and power-down sequencing of multiple voltage rails. This ensures that the voltage rails are powered up and down in the correct order to prevent damage to the device.
While the datasheet specifies an operating temperature range of -40°C to 85°C, Renesas recommends derating the device's performance at higher temperatures. For extended temperature range operation, consult Renesas' application notes and thermal design guidelines.
The 5V41068APGGI is not specifically designed or tested for radiation-hardened applications. For such applications, Renesas offers separate product lines, such as the RH850/C1x series, which are designed to meet radiation-hardened requirements.
Renesas recommends following the clock signal integrity guidelines outlined in their application note (AP-6102) for the 5V41068APGGI, which includes clock signal routing, termination, and jitter tolerance recommendations to ensure reliable operation.
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