SI53302-B-GM

Clock Buffers, Drivers Overview

The SI53302-B-GM is a universal fanout clock buffer featuring a 2:1 input multiplexer and ten configurable outputs. It supports any-format inputs including LVPECL, LVDS, CML, HCSL, and LVCMOS, with a frequency range from 1 MHz to 725 MHz. The device delivers 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, loss-of-signal monitoring, synchronous output enable, and flexible output clock division options (/1, /2, /4). It operates within a temperature range of –40 °C to +85 °C and is housed in a 44-QFN package.

Clock Buffers, Drivers Feature Summary

• Universal Any-Format Input: Supports LVPECL, Low-Power LVPECL, LVDS, CML, HCSL, and LVCMOS via AC or DC coupling.
• 2:1 Input Mux with Glitchless Switching: Allows selection between two clock sources without generating runt pulses.
• Ultra-Low Additive Jitter: Typical performance of 50 fs rms with integrated LDOs for noise rejection.
• Flexible Output Configuration: Ten outputs support independent format selection per bank and optional clock division.

Clock Buffers, Drivers Applications

• Clock distribution in noisy environments requiring low-jitter performance.
• Redundant clocking systems utilizing the 2:1 input mux for seamless source switching.
• System-level clock trees pairing with Si534x attenuators or Si5332 clocks.

Clock Buffers, Drivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm packaging options. The standard designation implies tray packaging; append an 'R' to the part number if tape and reel configuration is required for automated assembly processes.

Clock Buffers, Drivers Selection Notes

Select this component when ten output channels are required alongside dual-clock redundancy capabilities. Ensure the input signal slew rate meets minimum recommendations (0.75 V/ns for differential) to optimize jitter performance. Confirm that the target application voltage levels align with the supported VDD and VDDOX ranges of 1.8 V, 2.5 V, or 3.3 V.

Clock Buffers, Drivers Part Context

This device belongs to the Si5330x family of universal fanout buffers. Unlike the Si53301 which offers six outputs, the SI53302 provides ten outputs while retaining the 2:1 input mux functionality found in the Si53301, Si53304, and Si53305 models. It differs from non-mux variants like the Si53303 by providing redundant input capability.

Clock Buffers, Drivers Replacement Considerations

Si53301-B-GM: Offers identical 2:1 mux functionality but with only six outputs instead of ten. Si53305-B-GM: Provides ten outputs and a 2:1 mux but lacks synchronous output enable features available in the SI53302.