SL23EP04SC-1H

Clock Generators, PLLs, Frequency Synthesizers Overview

The SL23EP04SC-1H is a low skew, low jitter Zero Delay Buffer (ZDB) manufactured by Skyworks Solutions Inc. It generates up to four buffered clock outputs from a single reference input. The device operates within a frequency range of 10 to 220 MHz and supports power supplies between 2.5V and 3.3V. Typical power dissipation is 12 mA at 66 MHz with a 3.3V supply. Key electrical specifications include a typical output clock skew of 60 ps and a part-to-part output skew of 150 ps. The component features SpreadThru™ PLL technology for spread spectrum clocking support.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Provides one input driving four buffered clock outputs with low skew and jitter characteristics.
• Incorporates an on-chip PLL with a feedback pin allowing configuration for zero delay buffer operation.
• Supports SpreadThru™ PLL functionality to pass modulated spread spectrum clock signals without degradation.
• Includes a power-down mode that tri-states outputs and shuts down the PLL when the input clock is DC.

Clock Generators, PLLs, Frequency Synthesizers Applications

• Printers, MFPs and Digital Copiers
• PCs and Work Stations
• Routers, Switchers and Servers
• Datacom and Telecom
• High-Speed Digital Embedded Systems

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix to confirm package type and temperature grade. The SC suffix indicates Commercial grade (0 to 70°C), while SI denotes Industrial grade (-40 to 85°C). The 'T' suffix specifies tape and reel shipping, whereas absence indicates tube packaging. Confirm RoHS compliance status as required by project specifications.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select the -1H variant for high drive capability supporting frequencies up to 220 MHz at 3.3V. Ensure load capacitance requirements align with the specified frequency ranges for the chosen drive level. Verify that the application requires the standard 1x frequency option associated with the -1 series rather than the divide/multiply options available in the -2 series.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the SL23EP04 family of Zero Delay Buffers. It is explicitly marked as Not Recommended for New Designs in official documentation. Engineers should consider newer alternatives from the manufacturer's current timing portfolio for new product development projects.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material. Consult Silicon Laboratories or Skyworks Solutions technical support for current recommended replacements within the updated timing portfolio.

Clock Generators, PLLs, Frequency Synthesizers FAQ

How does the FBK pin function in the SL23EP04SC-1H?

The FBK pin serves as the PLL feedback input and must be connected externally to one of the four clock outputs to enable the zero delay buffer operation.

What happens to the outputs if the CLKIN input is DC?

If the CLKIN input is DC (GND to VDD), the device enters Power Down mode, tri-stating all four outputs and turning off the PLL to minimize power consumption.

Can the SL23EP04SC-1H handle spread spectrum clocks?

Yes, the device features SpreadThru™ PLL technology, which allows it to pass modulated spread spectrum clock signals from the input to the outputs without degrading the spread percentage or profile.