345RPLF

Clock Generators, PLLs, Frequency Synthesizers Overview

The Renesas ICS345RPLF is a field-programmable clock synthesizer from the VersaClock family, packaged in a 20-pin SSOP. It utilizes three Phase-Locked Loops (PLLs) to generate up to nine high-frequency outputs from a single low-frequency crystal or clock input. The device supports output frequencies up to 200 MHz at 3.3 V and features spread spectrum modulation for EMI reduction. It includes an OTP ROM for configuration storage and operates within a commercial temperature range of 0°C to +70°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Triple PLL architecture supporting up to nine LVCMOS outputs
• Field programmability via One-Time Programmable (OTP) ROM
• Spread spectrum modulation capability (-0.25% to -4.0%)
• Input frequency support: 5–27 MHz crystal or 2–50 MHz clock

Clock Generators, PLLs, Frequency Synthesizers Applications

• Replacing multiple crystals and oscillators in electronic systems
• Generating reference clocks for digital circuits
• Systems requiring low-skew clock distribution

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify that the 'LF' suffix confirms Pb-Free and RoHS compliance as specified in the ordering information. Confirm the package type matches the 20-pin SSOP requirement. Ensure the operating temperature range of 0°C to +70°C meets system specifications, distinguishing it from the industrial grade variant.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a single reference source must drive multiple asynchronous clock domains with low skew. Use IDT VersaClock software to determine optimal M/N values and output divide settings. Consider the ICS341, ICS342, or ICS343 if fewer than nine outputs are required.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The ICS345RPLF is part of the IDT/ICS VersaClock series, which also includes variants like the ICS348. The 'R' denotes the commercial temperature range, while 'I' indicates industrial range. Factory-programmed versions exist under the 345R-XXLF designation for high-volume applications.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Publicly confirmed substitutes include other members of the VersaClock family such as the ICS341, ICS342, ICS343, and ICS348, depending on the specific number of required outputs.