SI53254A-D01AMR

Clock Buffers, Drivers Overview

The Si53254A-D01AMR is an automotive-grade, single-input, four-output PCIe clock buffer from Skyworks Solutions. It provides differential HCSL outputs compliant with PCIe Gen1 through Gen6 specifications. The device operates on a core supply voltage ranging from 1.71 V to 3.46 V and supports an ambient temperature range of –40 °C to +105 °C. It features internal termination resistors selectable via the IMP_SEL pin for either 85 Ω or 100 Ω line matching. Key electrical parameters include a typical core supply current of 11 mA and total power dissipation of 145 mW in the 32-QFN package.

Clock Buffers, Drivers Feature Summary

• Four differential HCSL outputs compliant with PCIe Gen1/2/3/4/5/6 common clock and SRIS architectures
• Internal impedance selection (IMP_SEL) for 85 Ω or 100 Ω transmission line matching
• Excellent additive jitter performance: 0.05 ps RMS (Gen 3/4), 0.025 ps RMS (Gen 5), and 0.013 ps RMS (Gen 6)
• Loss of Signal (LOS) output pin indicating reference source presence (>10 MHz)

Clock Buffers, Drivers Applications

• Automotive infotainment systems
• Advanced Driver Assistance Systems (ADAS) Electronic Control Units (ECU)
• Radar sensor timing distribution
• LiDAR sensor timing distribution

Clock Buffers, Drivers Procurement Notes

Verify that the specific ordering suffix matches the required package type and reel configuration. The 'R' suffix indicates tape and reel packaging in a 32-QFN format. Confirm that the design supports the specified 1.71 V to 3.46 V core voltage range and the –40 °C to +105 °C operating temperature. Ensure input clock formats are compatible with the high-impedance inputs and AC/DC coupling restrictions defined in the datasheet.

Clock Buffers, Drivers Selection Notes

Select this component when a single-input, four-output fanout buffer is required for PCIe Gen1 through Gen6 applications. The Si53254A-D01AMR is suitable for designs needing hardware-controlled output enable pins and spread spectrum tolerance. Compare against the Si53254A-D03AM if dual-input capability with MUX functionality is necessary instead of a single fixed input.

Clock Buffers, Drivers Part Context

This part belongs to the Si5325x family, which includes the eight-output Si53258 variant. Both devices share similar electrical characteristics and compliance standards but differ in output count and input configurations. The Si53254A-D01AMR specifically addresses applications requiring four buffered clocks from a single reference source within automotive environments.

Clock Buffers, Drivers Replacement Considerations

Si53254A-D01AM (Tray packaging) offers identical electrical performance in a non-reel format. Si53254A-D03AM provides dual-input functionality with MUX support but utilizes a 40-QFN package.