SI53108-A01AGM

Overview

The Si53108-A01AGM is a low-power, 8-output differential clock buffer designed to meet Intel DB800ZL specifications. It supports 100 MHz and 133 MHz operation via an optimized VCO for PCIe Gen 1/2/3/4, QPI, SAS, SATA, and Intel SMI applications. The device features eight 0.7 V push-pull HCSL-compatible outputs with individual hardware OE pins. It operates on a 1.05 to 3.3 V supply, includes SMBus control (address 0xD8), and functions in PLL or bypass modes while tolerating spread spectrum inputs.

Feature Summary

• Eight 0.7 V low-power, push-pull, HCSL-compatible PCIe Gen 3 outputs
• Individual hardware OE pins for each output clock
• 100 MHz / 133 MHz PLL operation supporting PCIe and QPI
• SMBus address is 0xD8

Applications

• Server
• Storage
• Datacenter
• Enterprise Switches and Routers

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official Ordering Guide to confirm package type, temperature range, and tape-and-reel specifications. Ensure compatibility with system power supply voltages and interface requirements before procurement.

Selection Notes

Select this component for designs requiring zero-delay buffering for high-speed serial interfaces like PCIe Gen 4 and Intel QPI. Confirm that the input frequency matches the desired output frequency (1:1 mode) and that the system can accommodate the required 1.05 to 3.3 V supply voltage range.

Part Context

This device belongs to Skyworks Solutions' family of low-power clock buffers. It is specifically engineered to distribute reference clocks for demanding interconnect standards, providing jitter attenuation and signal integrity for multiple downstream components in high-performance computing environments.

Replacement Considerations

For higher output counts or variations, contact Skyworks Solutions directly. Verify pinout and electrical characteristics if substituting with other differential clock buffers from different manufacturers.

FAQ

What is the default state of the outputs when PWRGD is low?

When PWRGD is low, all outputs are disabled and held in a Low/Low state regardless of other inputs.

How is the operating frequency selected?

Frequency selection is determined by the 100M_133M hardware pin. A logic high selects 100.00 MHz, and a logic low selects 133.33 MHz.

Can the device operate in bypass mode?

Yes, the Si53108 supports both PLL mode and bypass mode, allowing it to tolerate spread spectrum inputs.