SI53305-B-GMR

Clock Buffers, Drivers Overview

The SI53305-B-GMR is a universal fanout clock buffer featuring ten outputs and a 2:1 input multiplexer. It accepts any-format inputs including LVPECL, LVDS, CML, HCSL, and LVCMOS across a frequency range of 1 MHz to 725 MHz. The device provides ultra-low additive jitter of 50 fs rms and includes built-in LDOs for high power supply rejection ratio (PSRR). Key features include glitchless switching between input sources, synchronous output enable, loss of signal monitors, and flexible output format selection via pin-strapping. It operates on independent core and output supplies ranging from 1.71 V to 3.63 V.

Clock Buffers, Drivers Feature Summary

• Ten universal outputs with selectable formats (LVPECL, LVDS, CML, HCSL, LVCMOS)
• 2:1 Input Mux with glitchless switching capability
• Ultra-low additive jitter of 50 fs rms typical
• Built-in LDOs for enhanced PSRR performance

Clock Buffers, Drivers Applications

• Clock distribution in noisy environments
• Redundant clocking systems requiring input muxing
• Format translation between different clock standards

Clock Buffers, Drivers Procurement Notes

Verify the package type corresponds to the 44-QFN configuration as specified in the ordering guide. Confirm that the 'R' suffix indicates tape and reel packaging options. Ensure compatibility with the required voltage domains for both core and output supplies before procurement.

Clock Buffers, Drivers Selection Notes

Select this component when ten differential or single-ended outputs are required alongside dual-input redundancy. Verify that the input clock slew rate meets the minimum recommendations to optimize jitter performance. Check if the specific output format and voltage levels match the load requirements without additional external components.

Clock Buffers, Drivers Part Context

This part belongs to the Si5330x family of low-jitter, low-skew universal buffers. It shares functional similarities with other members like the SI53301 and SI53302 but is distinct in its ten-output configuration and individual output enable capabilities. It is designed to complement Skyworks jitter attenuators and oscillators for complete clock tree solutions.

Clock Buffers, Drivers Replacement Considerations

Direct replacements within the same family include the SI53301-B-GM (6 outputs) or SI53302-B-GM (10 outputs). Note that the SI53302 lacks individual output enable control found in the SI53305. Verify pinout compatibility and feature sets such as glitchless switching when substituting.