SI53345-B-GMR

Clock Buffers, Drivers Overview

The Skyworks SI53345-B-GMR is a low-jitter LVDS fanout buffer featuring ten differential LVDS outputs. It accepts single-ended LVCMOS inputs and operates over a frequency range from DC to 200 MHz. The device includes a 2:1 input multiplexer for selecting between two clock sources, controlled by the CLK_SEL pin. Built-in LDOs provide high power supply noise rejection (PSRR), reducing external filtering requirements. It supports independent output enable controls and functions within an ambient temperature range of –40 °C to +85 °C.

Clock Buffers, Drivers Feature Summary

• Ten LVDS outputs with ultra-low additive jitter of 50 fs rms typical
• 2:1 input mux allowing selection between CLK0 and CLK1 via CLK_SEL pin
• Built-in LDOs deliver high PSRR performance for noisy environments
• LVCMOS input compatibility with AC or DC coupling options

Clock Buffers, Drivers Applications

• Clock distribution in redundant clocking architectures
• Data distribution systems requiring low skew
• High-speed digital interfaces utilizing LVCMOS sources

Clock Buffers, Drivers Procurement Notes

Verify the specific ordering suffix matches the required package and tape/reel configuration. Confirm that the LVCMOS-only input variant aligns with the source signal format, as universal input models exist within the family. Ensure thermal management meets the junction temperature limits specified in the datasheet.

Clock Buffers, Drivers Selection Notes

Select this model when ten LVDS outputs are required from a single-ended LVCMOS source. For applications needing universal input formats like LVPECL or LVDS, choose the SI53344 variant instead. Verify that the 200 MHz maximum frequency meets system requirements, as other family members support up to 1250 MHz.

Clock Buffers, Drivers Part Context

This component belongs to the Si53340-45 family of low-jitter LVDS fanout buffers. The family differentiates models by input format (universal vs. LVCMOS) and output count (4, 3, or 10). The SI53345 specifically targets LVCMOS inputs with a full bank of ten outputs.

Clock Buffers, Drivers Replacement Considerations

SI53344-B-GM provides identical ten-output LVDS capability but accepts any-format inputs including LVDS and LVPECL.