SIT92110AI-N

Clock Buffers, Drivers Overview

The SiTime SIT92110AI-N is a 10-output low-jitter clock fan-out buffer designed for high-frequency clock and data distribution. It features a 3:1 input multiplexer with primary, secondary, and crystal inputs, distributing the selected signal to ten LVCMOS output drivers. The device supports core supply voltages of 3.3 V, 2.5 V, or 1.8 V, and output supplies of 3.3 V, 2.5 V, 1.8 V, or 1.5 V. It operates within an ambient temperature range of -40°C to +85°C and is housed in a 32-pin, 5 mm x 5 mm QFN package.

Clock Buffers, Drivers Feature Summary

• Additive jitter performance of 50 fs RMS
• Typical output skew between clock outputs is 30 ps
• Supports LVPECL, LVDS, LVCMOS, SSTL, HCSL, and XTAL input waveforms
• Crystal frequencies from 8 MHz to 50 MHz supported

Clock Buffers, Drivers Applications

• Low jitter clock distribution systems
• High frequency clock/data distribution networks
• Driving 50 Ω series or parallel terminated transmission lines

Clock Buffers, Drivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type, temperature range, and revision status. Ensure that the required supply voltage levels (VDD and VDDO) match the design specifications, as the device supports multiple independent voltage domains without sequencing requirements.

Clock Buffers, Drivers Selection Notes

Select this component when a 10-channel LVCMOS output buffer is required with ultra-low additive jitter. Consider the input signal compatibility, as the universal inputs accept various differential and single-ended formats. Ensure the PCB layout supports the specified slew rate requirements (>2 V/ns) to maintain optimal phase noise and jitter performance.

Clock Buffers, Drivers Part Context

The SIT92110 belongs to SiTime's family of high-performance clock buffers. It utilizes MEMS technology for timing generation and distribution. The AI suffix typically denotes industrial temperature grade availability, while the N suffix indicates the specific package variant. This part serves as a direct replacement for traditional quartz-based fan-out buffers in demanding applications.

Clock Buffers, Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical characteristics carefully when considering alternative vendors or previous revisions of the same part number.

Clock Buffers, Drivers FAQ

What is the maximum input frequency supported by the SiT92110?

The maximum input frequency is 250 MHz for LVDS, LVPECL, HCSL, and LVCMOS outputs.

Can the SiT92110 operate with independent core and output supply voltages?

Yes, the core supply (VDD) and output supply (VDDO) are independent, allowing for level translation between different voltage domains without requiring supply sequencing.

How is the output enable function controlled?

Pulling the OE pin LOW forces the outputs to a high-impedance state after four falling edges of the input signal. Pulling OE HIGH enables the outputs.