ICS345RP - Triple PLL 200MHz Clock Synthesizer | Renesas
Référence : ICS345RP ✗ Fin de vieICS345RP Présentation
A field-programmable clock synthesizer is a clock and timing IC that uses one or more phase-locked loops to generate, divide, multiply, or otherwise derive multiple clock outputs from a reference source. In the broader semiconductor hierarchy, a PLL belongs to the clock and timing category and provides a flexible alternative to fitting separate oscillators and divider networks on a complex circuit board. The ICS345RP is positioned for systems that need multiple related clock domains while preserving a centralized programming and distribution architecture.
The ICS345RP combines a triple-PLL architecture with field-programmable output generation. According to the Renesas datasheet result for the 345 family, the device can generate up to nine high-quality, high-frequency clock outputs and can derive those outputs from a low-frequency reference. The verified distributor listing identifies the ICS345RP as a clock/frequency synthesizer IC with a 200 MHz frequency rating and a single 20-SSOP configuration.
This type of device is useful in communication equipment, industrial control systems, test and measurement instruments, embedded computing platforms, and other systems requiring multiple clocks with predictable relationships. A common design uses a stable reference source at the input and programmable divider, multiplier, and phase-alignment functions to create the required output frequencies. The central benefit is reduced component count and easier clock-tree management compared with several unrelated oscillator and divider combinations.
When designing around the ICS345RP, confirm the reference frequency, target output frequencies, output-routing requirements, and permitted programming scheme against the manufacturer datasheet. The 20-SSOP footprint requires careful PCB layout, particularly around supply decoupling, clock output routing, and grounding. The package should not be replaced with a mechanically similar part unless its pinout, programming model, PLL performance, and output-routing behavior have been verified.
This page summarizes the verified device identity, package, frequency, PLL, and output-count information while highlighting the practical clock-tree role of the ICS345RP. Detailed electrical limits, pin assignments, programming registers, and application-specific replacement decisions should be confirmed in the Renesas ICS345 documentation before schematic sign-off or PCB release.
Alternatives de remplacement direct pour ICS345RP — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Aucune alternative de remplacement direct disponible pour ce produit.
Demander des alternativesICS345RP Spécifications
| Device Type | Clock/Frequency Synthesizer IC |
| Architecture | Triple PLL field-programmable clock synthesizer |
| Maximum Frequency | 200 MHz |
| Number of PLLs | 3 |
| Maximum High-Frequency Clock Outputs | 9 |
| Reference Clock Outputs | Multiple reference clocks |
| Input Reference Type | Low-frequency reference |
| Configuration de sortie | 1 |
| Boîtier | 20-SSOP |
| Package Width | 3.90 mm |
| Type de montage | Surface Mount |
| Programmability | Field programmable |
| Nombre de broches | 20 pins |
Guide de configuration des broches du ICS345RP 3.90 mm
Configuration des broches du ICS345RP (boîtier 3.90 mm). La numérotation des broches, les fonctions et les schémas de connexion sont définis dans la fiche technique du fabricant. Consultez-la pour l'empreinte exacte et les directives de soudage.
Aucune donnée de brochage détaillée disponible pour ICS345RP.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
ICS345RP convient pour 6 applications: Communication Equipment Clock Tree, Industrial Control Systems, Test and Measurement Instrumentation, Data Acquisition and Conversion, Embedded Computing Platforms, Network and Synchronization Equipment.
Communication Equipment Clock Tree
The ICS345RP fits communication equipment that needs several related clock signals generated from one low-frequency reference. Its three PLL sections and capability to produce up to nine high-quality, high-frequency outputs support centralized clock distribution without assembling separate oscillator and divider networks. The 200 MHz maximum frequency rating makes the device relevant to clocking sections operating below that limit. Engineers should map reference, programming, and output pins from the Renesas 345 datasheet before layout, then verify jitter and output-drive requirements against the actual interface timing budget.
Industrial Control Systems
Industrial control systems can use the ICS345RP to manage multiple clock domains for processors, data converters, communications links, and timing logic. The triple-PLL architecture allows related output frequencies to be derived from a common low-frequency reference, reducing the number of separate clock components. With output frequencies up to the device's 200 MHz rating and as many as nine outputs in the ICS345 family, the part suits synchronized control and data-acquisition subsystems. Final qualification depends on the operating-temperature grade, supply limits, reliability requirements, and regulatory obligations for the finished equipment.
Test and Measurement Instrumentation
The ICS345RP is appropriate for test and measurement instruments that require several stable, interrelated clock outputs for acquisition, conversion, modulation, or digital processing. A common low-frequency reference can feed the triple-PLL architecture, while field programming supports a configurable clock plan as subsystem requirements evolve. The 200 MHz maximum frequency rating accommodates many high-speed digital sections, although the designer must confirm jitter, phase relationship, and output-drive specifications for each channel. Keeping sensitive clock traces short and separating high-current outputs from analog sections improves implementation quality.
Data Acquisition and Conversion
Data-acquisition and mixed-signal conversion systems benefit when several converter, interface, and processing clocks require a common reference relationship. The ICS345RP can derive up to nine outputs from one low-frequency reference using three PLL sections, helping engineers replace separate fixed-frequency oscillator networks with a programmable clock tree. Its 200 MHz rating supports high-speed digital signaling while preserving a compact 20-SSOP implementation. The design must still account for trace length, clock-output loading, supply decoupling, and the exact conversion-device clock requirements, because frequency compatibility alone does not establish timing compatibility.
Embedded Computing Platforms
Embedded computing platforms often need several related clocks for processor cores, memory interfaces, serial links, and peripherals. The ICS345RP provides a field-programmable triple-PLL clock source that can generate as many as nine outputs from a low-frequency reference, reducing discrete clock-component count and simplifying centralized clock management. Its 200 MHz maximum rating is appropriate for many embedded digital blocks. Firmware and hardware developers should define startup behavior, fault states, and supported programming flow before integration, because a programmable clock tree is most useful when its configuration and monitoring plan are fully defined.
Network and Synchronization Equipment
The ICS345RP can support synchronization and network-related subsystems that need multiple predictable outputs with controlled relationships. Its triple-PLL field-programmable architecture is useful when several clock domains must be derived from a shared reference rather than driven by unrelated oscillators. The 20-SSOP package keeps the device compact for communication boards, while the 200 MHz maximum frequency provides headroom for high-speed digital logic. Before selection, verify the input-reference range, output frequency ranges, jitter budget, and any channel-to-channel phase constraints against the system architecture and the Renesas 345 datasheet.
Données de référence d'ingénierie pour ICS345RP — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit |
|---|---|
| Brand | Renesas Electronics |
| Package | 20-SSOP |
| Device Type | Clock/Frequency Synthesizer IC |
| Maximum Frequency | 200 MHz |
| PLL Architecture | Triple PLL |
| Maximum Clock Outputs | 9 outputs |
| Reference Clocks | Multiple reference clocks |
| Programmability | Field programmable |
Principaux différenciateurs
- Multi-output clock-tree integration (vs Simpler single-output clock generator)
- Programmable clock architecture (vs Discrete oscillator and divider network)
- Compact mixed-signal integration (vs Discrete clock-generation components)
Notes de conception
Use the 20-SSOP pin description in the Renesas 345 datasheet to place the reference input, programming interface, clock outputs, supply, and ground connections before routing the board. Keep clock traces short, provide solid ground references, and avoid routing high-speed clock nets beneath unrelated noisy circuitry. Clock quality depends on clean supply references and predictable return paths, so preserve the package ground connections and avoid unnecessary stubs.
Plan the supply network from the ICS345RP operating requirements in the manufacturer documentation. Place the required bypass capacitors adjacent to their associated power pins, maintain a low-impedance ground path, and keep switching-current loops away from clock and reference traces. The exact capacitor values and voltage limits must follow the Renesas datasheet because those electrical details are not stated in the product listing.
Do not select a replacement solely because it is a clock synthesizer with a similar maximum frequency. A board-level substitute must also match the 20-SSOP footprint, pin functions, reference-input requirements, programming method, PLL configuration range, and output-routing behavior. Confirm startup and fault behavior as well, because changes in these areas can alter system timing even when the advertised output frequency is identical.
Treat reference-clock and generated-clock routing as controlled-impedance paths when the operating frequency or edge rate requires it. Match output loading to the Renesas output-drive and timing specifications, keep test points away from sensitive nodes, and avoid unnecessary stubs or long unused branches. Because exact rise-time, jitter, and loading limits are not listed in the product summary, confirm them in the manufacturer datasheet before releasing high-speed layouts.
Informations de conformité
Compliance attributes for the exact ICS345RP ordering code were not stated in the verified product information. Confirm RoHS, REACH, lead-free, halogen-free, AEC-Q100, and conflict-mineral status with Renesas before release.
