SI53254A-D01AM

Clock Buffers, Drivers Overview

The Si53254A-D01AM is an automotive-grade, single-input, four-output PCIe clock buffer from Skyworks Solutions. It operates within a -40°C to +105°C temperature range and supports PCIe Gen1 through Gen6 common clock architectures. The device provides four differential HCSL outputs at 100 MHz with internal termination selectable for 85 Ω or 100 Ω impedance via the IMP_SEL pin. It features excellent additive jitter performance, ranging from 0.013 ps RMS for Gen6 to 0.05 ps RMS for Gen3/4. The core supply voltage ranges from 1.71 V to 3.46 V, with a typical operating current of 11 mA.

Clock Buffers, Drivers Feature Summary

• Four differential HCSL outputs with selectable 85 Ω or 100 Ω internal termination
• PCIe Gen1/2/3/4/5/6 compliant with ultra-low additive jitter (0.013 ps RMS max for Gen6)
• Automotive Grade 2 qualification (-40°C to +105°C) with AEC-Q100 and AEC-Q006 standards
• Individual hardware output enable pins and Loss of Signal (LOS) indicator

Clock Buffers, Drivers Applications

• Infotainment systems
• ADAS ECUs
• Radar sensors
• LiDAR sensors

Clock Buffers, Drivers Procurement Notes

Verify package type and reel configuration during ordering. The standard part number Si53254A-D01AM corresponds to the 32-QFN tray packaging. For tape and reel packaging, the suffix 'R' must be added (Si53254A-D01AMR). Confirm that the specific ordering suffix matches the required manufacturing format before finalizing procurement documents.

Clock Buffers, Drivers Selection Notes

Select this component for designs requiring a single input source to drive four PCIe endpoints with strict timing requirements. Ensure the PCB layout accommodates the 32-QFN package and connects the IMP_SEL pin correctly to set the desired 85 Ω or 100 Ω termination. Verify that the power supply rails meet the 1.71 V to 3.46 V core voltage specifications and that unused output drivers are properly disabled to minimize power consumption.

Clock Buffers, Drivers Part Context

This device belongs to the Si5325x family, which includes the eight-output Si53258 variant. Both share identical electrical characteristics and feature sets but differ in output count and package size. The Si53254A-D01AM specifically utilizes a 32-QFN package, whereas the dual-input Si53254A-D03AM uses a 40-QFN package to accommodate additional clock inputs.

Clock Buffers, Drivers Replacement Considerations

For single-input, four-output applications, the Si53254A-D03AM serves as a functional alternative if a 40-QFN package is acceptable. For eight-output requirements, the Si53258A-D01AM is the direct family equivalent. No other cross-manufacturer replacements are verified in the provided documentation.