345RPLFT

Clock Generators, PLLs, Frequency Synthesizers Overview

The ICS345RPLFT is a field-programmable clock synthesizer from the VersaClock family, manufactured by Renesas Electronics (formerly IDT). It utilizes three Phase-Locked Loops 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 and operates on a 3.3 V supply. It features an internal One-Time Programmable ROM for configuration storage, eliminating the need for external memory. The component is housed in a 20-pin SSOP package with an operating 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 OTP ROM using IDT VersaClock software
• Spread spectrum modulation capability for EMI reduction
• Input frequency support: 5–27 MHz crystal or 2–50 MHz clock

Clock Generators, PLLs, Frequency Synthesizers Applications

• Replacing multiple discrete crystals and oscillators in electronic systems
• Generating reference clocks for digital logic and processors
• Systems requiring low-skew clock distribution across multiple domains

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify that the 'T' suffix corresponds to the Tape and Reel packaging format as specified in the ordering information. Confirm the 'LF' designation indicates Pb-Free and RoHS compliance. Ensure the base part number matches the commercial temperature grade (0 to +70°C) required for the application environment.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this model when a single-chip solution is needed to replace multiple oscillators. The ICS345RPLFT is suitable for applications requiring up to nine outputs with spread spectrum capabilities. For higher volume needs, consider factory-programmed variants like the 345R-XXLF series. Ensure the design accommodates the required external crystal load capacitors and decoupling components.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the VersaClock family of clock synthesizers. It serves as a high-output alternative to lower-channel devices such as the ICS341 (one output), ICS342 (two outputs), and ICS343 (three outputs). The ICS345 provides enhanced flexibility through its triple PLL structure and programmable register set.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Factory-programmed versions such as 345R-XXLF offer identical functionality but are configured at the factory. Verify pin compatibility if substituting with other VersaClock models, noting that output counts and PLL configurations differ across the family.