SIT92216AI-T

Clock Buffers, Drivers Overview

The SiT92216AI-T is a high-performance clock fan-out buffer featuring four differential outputs and one LVCMOS output. It supports input frequencies up to 2100 MHz with an additive jitter performance of 50 fs RMS. The device operates from independent core (VCC) and output (VCCO) supplies, supporting 3.3 V, 2.5 V, and 1.8 V rails for specific driver modes. It includes a 3:1 input multiplexer accepting primary, secondary, or crystal sources. Packaged in a 32-pin, 5 mm x 5 mm QFN, it provides low skew and high isolation for demanding timing applications.

Clock Buffers, Drivers Feature Summary

• Ultra-low additive jitter of 50 fs RMS across differential and LVCMOS outputs.
• Supports input frequencies from DC to 2100 MHz on primary and secondary inputs.
• Features a 3:1 input mux selectable via pins for CLKIN0, CLKIN1, or Crystal/XO bypass.
• Independent power domains: Core supply (VCC) and three output banks (VCCOA, VCCOB, VCCOC).

Clock Buffers, Drivers Applications

• Carrier Ethernet infrastructure
• 5G Wireless Base Stations and Small Cells
• PCI Express Gen1 through Gen5 systems

Clock Buffers, Drivers Procurement Notes

Verify the suffix 'AI' corresponds to the industrial temperature range (-40°C to +85°C) as specified in the datasheet's recommended operating conditions. Confirm the package marking matches the 32-pin QFN form factor. Ensure ordering codes align with the required output voltage levels (3.3V, 2.5V, or 1.8V) for the specific application design.

Clock Buffers, Drivers Selection Notes

Select this component when driving multiple high-speed receivers requiring low jitter distribution. Choose based on the required output logic families (LVPECL, LVDS, HCSL, or LVCMOS). Ensure the system power budget accounts for the dynamic current consumption which scales with frequency and enabled output banks. Verify that the PCB layout accommodates the 5mm x 5mm QFN footprint and thermal requirements.

Clock Buffers, Drivers Part Context

The SiT92216 belongs to SiTime's portfolio of ultra-low jitter buffers designed for high-frequency clock distribution. It replaces traditional discrete buffering solutions by integrating multiple output drivers and input selection into a single compact package. This integration reduces board space and simplifies the clock tree architecture in complex digital systems.

Clock Buffers, Drivers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.