SI53345-B-GM

Clock Buffers, Drivers Overview

The Skyworks SI53345-B-GM is a low-jitter LVDS fanout buffer featuring 10 LVDS outputs from an LVCMOS input. It operates over a frequency range of dc to 200 MHz with typical ultra-low additive jitter of 50 fs rms. The device includes built-in LDOs for high PSRR performance and supports a 2:1 input mux for selectable clock sources. It is housed in a 32-QFN (5x5 mm) package and functions within an ambient temperature range of –40 to +85 °C.

Clock Buffers, Drivers Feature Summary

• Ultra-low additive jitter of 50 fs rms
• 10 LVDS outputs with independent output enable options
• Built-in LDOs for high power supply noise rejection
• 2:1 Input Mux for selecting between two clock sources

Clock Buffers, Drivers Applications

• Clock distribution networks
• Redundant clocking applications
• Low-jitter clock buffering in noisy environments

Clock Buffers, Drivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure correct configuration details. Confirm that the component meets RoHS compliance and Pb-free requirements as specified in the datasheet. Ensure the selected part number aligns with the required input format and output count for the intended design.

Clock Buffers, Drivers Selection Notes

Select this model when LVCMOS inputs are required alongside multiple LVDS outputs. The Si53345 supports frequencies up to 200 MHz, distinguishing it from the Si53344 which handles up to 1250 MHz. Verify that the application requires the specific 10-output configuration and 32-QFN package size provided by this variant.

Clock Buffers, Drivers Part Context

This component belongs to the Si53340-45 family of low-jitter LVDS fanout buffers. The family offers various configurations ranging from 3 to 10 outputs and supports different input formats. The Si53345 specifically targets applications needing LVCMOS inputs with extensive LVDS output distribution capabilities.

Clock Buffers, Drivers Replacement Considerations

The Si53344-B-GM serves as a functional alternative if higher frequency support up to 1250 MHz is needed, though it accepts any-format inputs rather than strictly LVCMOS. Other family members like the Si53340 or Si53342 offer different output counts and input compatibility.