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Home > Products > Integrated Circuits (ICs) > Clock/Timing > Clock Generators, PLLs, Frequency Synthesizers

Renesas 527R-01ILF

Name: 527R-01ILF
Brand: Renesas
SKU: 527R-01ILF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 527R-01ILF

Manufacturer:: Renesas

Category:: Clock Generators, PLLs, Frequency Synthesizers

Package:: 28-SSOP (0.154", 3.90mm Width)

Datasheet:: 527R-01ILF.pdf

Description:: IC FANOUT BUFFER 28QSOP

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Product details

Overview

527R-01ILF from Renesas Electronics (formerly IDT/ICS) is a user-configurable zero-delay clock slicer IC that aligns rising edges of input (ICLK) and feedback (FBIN) clocks with sub-250 ps skew. It supports non-integer frequency synthesis (e.g., 5/4 × 40 MHz = 50 MHz), delivers up to 160 MHz CLK1 output, and features SYNC pulse generation for edge alignment verification. Used in high-precision timing systems requiring deterministic phase relationships between clocks.

For engineers reviewing the 527R-01ILF datasheet, 527R-01ILF pinout, 527R-01ILF application, or 527R-01ILF equivalent, this page provides verified functional specifications, industrial-grade operating conditions (−40°C to +85°C), PLL-based zero-skew architecture details, and real-world configuration guidance for fractional clock generation and synchronization-critical designs.

Technical Context

The 527R-01ILF implements a PLL-based clock slicer architecture where rising edges of ICLK and FBIN are aligned at a ratio determined by programmable reference (R6:R0) and feedback (F6:F0) dividers - enabling precise non-integer multiplication/division. Feedback can be sourced from CLK1 or CLK2 (but not both), and DIV2 selects whether CLK2 outputs a SYNC pulse or CLK1/2.

It operates with 3.3 V supply, accepts 600 kHz–200 MHz input clocks, and produces CLK1 outputs from 4 MHz to 160 MHz (commercial) or 4 MHz to 140 MHz (industrial). The SYNC output is valid only up to 66 MHz CLK1 and indicates synchronized rising edges between ICLK and FBIN.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Frequency Range	600 kHz to 200 MHz - supports wideband reference clock sources including crystal oscillators, XO, and system clocks.
CLK1 Output Frequency	Up to 160 MHz (0°C to +70°C) / 140 MHz (−40°C to +85°C) - defines maximum usable clock rate under specified thermal conditions.
Rising Edge Skew (ICLK to FBIN)	±250 ps - guarantees tight phase alignment critical for synchronous multi-clock domain systems.
Supply Voltage	3.0 V to 3.6 V - compatible with standard 3.3 V logic rails; requires 0.01 µF decoupling per VDD pin.
Operating Temperature	−40°C to +85°C - qualified for industrial environments; marked as "I" suffix in part number.
Output Drive Strength	12 mA (2XDRIVE = 0) or 25 mA (2XDRIVE = 1) - selectable via dedicated pin for impedance matching on PCB traces.
Jitter (1σ period)	40 ps - low jitter enables stable sampling in high-speed ADCs, SERDES, and memory interfaces.

Pinout & Package

Package: 28-pin SSOP (150 mil body, 0.635 mm pitch), JEDEC MO-153 compliant, Pb-free.

Pin/Terminal	Circuit Role	Design Meaning
ICLK (Pin 7)	Primary reference clock input	Accepts 600 kHz–200 MHz input; internal termination enables direct connection to crystal oscillator or buffered clock source.
FBIN (Pin 8)	Feedback clock input	Connected to CLK1 or CLK2 to close PLL loop; determines final output phase alignment and stability.
CLK1 (Pin 22)	Main configurable clock output	Programmable output up to 140 MHz; duty cycle 45/55% at full rate; drives fanout buffers or downstream logic.
CLK2 (Pin 21)	Secondary output	Configurable as SYNC pulse (DIV2 = 0) or CLK1/2 (DIV2 = 1); tri-statable via OECLK2 for dynamic control.
PDTS (Pin 19)	Power-down control	Active-low; places both CLK1 and CLK2 in high-impedance state within 50 ns; reduces IDD to 20 µA.
R0–R6 (Pins 1,2,24–28)	Reference divider word inputs	7-bit binary word (0–127) setting RDW; internal pull-ups allow static configuration via GND/VDD ties.
F0–F6 (Pins 12–18)	Feedback divider word inputs	7-bit binary word (0–127) setting FDW; determines feedback ratio and thus output frequency relationship.
OECLK2 (Pin 10)	CLK2 output enable	Drives CLK2 high-impedance when low; used to disable unused output and minimize jitter on CLK1.

Key Features

Feature	Design Value
User-configurable non-integer synthesis	Supports arbitrary multiplication/division ratios (e.g., 5/4, 7/3) via independent 7-bit reference and feedback dividers.
Zero-skew rising edge alignment	Guarantees ±250 ps skew between ICLK and FBIN rising edges - essential for deterministic timing across clock domains.
Synchronization pulse output	CLK2 generates a SYNC pulse aligned with de-skewed rising edges - enables real-time validation of PLL lock and phase alignment.
Industrial temperature operation	Rated for −40°C to +85°C ambient; validated electrical performance across full range including jitter and skew specs.
Selectable output drive strength	12 mA or 25 mA per CLK output - allows optimization for trace length, load capacitance, and signal integrity without external drivers.

Applications

High-Speed Data Acquisition	Multi-Clock FPGA Systems
Use Scenario: Synchronizing ADC sampling clock with system reference while maintaining sub-ns timing margin. IC Role / Device Role / Timing Role: Zero-delay clock slicer generating precisely aligned sampling clock and SYNC pulse for timestamping. Use Value: Enables deterministic capture of analog signals with <±250 ps skew between reference and sampling edge - critical for time-interleaved or multi-channel coherent acquisition.	Use Scenario: Providing multiple phase-aligned clocks to FPGA logic, transceivers, and memory controllers from a single reference. IC Role / Device Role / Timing Role: Configurable clock generator producing CLK1 (100 MHz) and CLK2 (50 MHz) with synchronized rising edges. Use Value: Eliminates inter-clock domain metastability risk by guaranteeing sub-250 ps skew - improves setup/hold margin and simplifies timing closure.
Industrial Ethernet Switches	Test & Measurement Equipment
Use Scenario: Generating PHY reference clocks and PTP timestamp synchronization signals in IEEE 1588-compliant switches. IC Role / Device Role / Timing Role: Clock slicer delivering aligned 125 MHz and 25 MHz outputs with SYNC pulse for hardware timestamp alignment. Use Value: Achieves sub-100 ps timestamp accuracy by locking all clocks to common ICLK - meets stringent TSN and precision time protocol requirements.	Use Scenario: Configuring arbitrary test clock frequencies (e.g., 50.123 MHz) from a fixed 10 MHz lab reference in signal generators or analyzers. IC Role / Device Role / Timing Role: Programmable zero-delay buffer synthesizing non-standard frequencies with low jitter and deterministic phase. Use Value: Supports flexible stimulus generation without external PLL modules - reduces BOM count and board space while preserving spectral purity.

High-Speed Data Acquisition

Multi-Clock FPGA Systems

Use Scenario: Synchronizing ADC sampling clock with system reference while maintaining sub-ns timing margin.

IC Role / Device Role / Timing Role: Zero-delay clock slicer generating precisely aligned sampling clock and SYNC pulse for timestamping.

Use Value: Enables deterministic capture of analog signals with <±250 ps skew between reference and sampling edge - critical for time-interleaved or multi-channel coherent acquisition.

Use Scenario: Providing multiple phase-aligned clocks to FPGA logic, transceivers, and memory controllers from a single reference.

IC Role / Device Role / Timing Role: Configurable clock generator producing CLK1 (100 MHz) and CLK2 (50 MHz) with synchronized rising edges.

Use Value: Eliminates inter-clock domain metastability risk by guaranteeing sub-250 ps skew - improves setup/hold margin and simplifies timing closure.

Industrial Ethernet Switches

Test & Measurement Equipment

Use Scenario: Generating PHY reference clocks and PTP timestamp synchronization signals in IEEE 1588-compliant switches.

IC Role / Device Role / Timing Role: Clock slicer delivering aligned 125 MHz and 25 MHz outputs with SYNC pulse for hardware timestamp alignment.

Use Value: Achieves sub-100 ps timestamp accuracy by locking all clocks to common ICLK - meets stringent TSN and precision time protocol requirements.

Use Scenario: Configuring arbitrary test clock frequencies (e.g., 50.123 MHz) from a fixed 10 MHz lab reference in signal generators or analyzers.

IC Role / Device Role / Timing Role: Programmable zero-delay buffer synthesizing non-standard frequencies with low jitter and deterministic phase.

Use Value: Supports flexible stimulus generation without external PLL modules - reduces BOM count and board space while preserving spectral purity.

Equivalent & Alternatives

The following parts are listed as comparable options for similar clock slicing and zero-delay buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Si5332-B-GM	Integrated multi-output clock generator with integrated crystal; higher integration but fixed pinout and no user-programmable dividers.	Requires pre-defined configuration file; lacks real-time reconfiguration via pins like 527R-01ILF's R/F/S pins.	Choose Si5332-B-GM for compact, crystal-integrated solutions where flexibility is secondary to footprint and power.
ICS552-01ILF	Legacy IDT zero-delay buffer with integer-only division/multiplication; no non-integer support or SYNC output.	Limited to simple clock doubling/halving; cannot generate fractional frequencies like 5/4 × f_IN.	Choose ICS552-01ILF only for cost-sensitive integer-ratio applications where SYNC and fractional synthesis are unnecessary.

Compared with Si5332-B-GM and ICS552-01ILF, the 527R-01ILF uniquely offers pin-based real-time configuration of non-integer ratios, SYNC pulse generation for alignment verification, and industrial-temperature operation - making it optimal for field-upgradable, phase-critical embedded timing systems.

Availability

527R-01ILF is available at Aetrix Electronics and suitable for industrial automation controllers, FPGA-based test equipment, and Ethernet timing modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 527R-01ILF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and timing solutions for automotive, industrial, and infrastructure markets.

The 527R-01ILF belongs to Renesas' legacy IDT clock portfolio, designed specifically for applications demanding deterministic zero-skew clock distribution, user-configurable fractional synthesis, and industrial-grade reliability.

FAQ

What is the maximum input frequency supported by the 527R-01ILF?

The 527R-01ILF supports an input clock frequency range of 600 kHz to 200 MHz. This upper limit applies across its full industrial temperature range (−40°C to +85°C), and the device maintains specified jitter and skew performance up to this frequency when operated within recommended supply and layout conditions.

Does the 527R-01ILF support non-integer frequency synthesis?

Yes, the 527R-01ILF supports non-integer multiplication and division through independent 7-bit reference (R6:R0) and feedback (F6:F0) dividers. For example, configuring RDW = 2 and FDW = 3 yields a 5/4 × f_IN output - a capability explicitly documented in the 527R-01ILF datasheet for generating arbitrary output frequencies.

What is the purpose of the SYNC output on the 527R-01ILF?

The SYNC output (on CLK2 when DIV2 = 0) is a pulse that goes high synchronously with aligned rising edges of ICLK and FBIN. It serves as a real-time indicator of PLL lock and zero-skew alignment - enabling external logic or test equipment to verify correct operation without probing internal nodes. SYNC is valid only up to 66 MHz CLK1 frequency.

How does the 527R-01ILF achieve zero skew between input and output clocks?

The 527R-01ILF achieves zero skew using a PLL architecture that actively aligns rising edges of ICLK and FBIN at a ratio defined by the reference and feedback dividers. Measured skew between ICLK and FBIN is guaranteed within ±250 ps across temperature and voltage - a specification confirmed in the AC Electrical Characteristics table of the 527R-01ILF datasheet.

What package and temperature grade does the 527R-01ILF use?

The 527R-01ILF uses a 28-pin SSOP package (150 mil body, 0.635 mm pitch) and is rated for industrial temperature operation from −40°C to +85°C. The "I" in the part number explicitly denotes this extended temperature qualification, and all electrical parameters - including jitter, skew, and frequency limits - are guaranteed across this range.

527R-01ILF Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 28-SSOP (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Obsolete

Programmable:: Not Verified

Type:: Fanout Buffer (Distribution), Zero Delay Buffer

PLL:: Yes

Input:: Clock

Output:: Clock

Number of Circuits:: 1

Ratio - Input:Output:: 1:2

Differential - Input:Output:: No/No

Frequency - Max:: 140MHz

Divider/Multiplier:: Yes/Yes

Voltage - Supply:: 3V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

Supplier Device Package:: 28-QSOP

527R-01ILF FAQ

1.How can I place an order for 527R-01ILF through Aetrix?

Please submit a Request for Quotation (RFQ) for 527R-01ILF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 527R-01ILF reliable?

The price and inventory of 527R-01ILF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 527R-01ILF is usually 5 days.

3.What payment methods are accepted for 527R-01ILF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 527R-01ILF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 527R-01ILF?

527R-01ILF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 527R-01ILF order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 527R-01ILF?

For technical support, including 527R-01ILF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 527R-01ILF requirements.

6.How does Aetrix verify that 527R-01ILF is sourced from the original manufacturer or authorized distributors?

All 527R-01ILF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 527R-01ILF meets industry standards.

7.What is the process for return or replacement of 527R-01ILF?

All 527R-01ILF units undergo pre-shipment inspection (PSI). If there is an issue with 527R-01ILF, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 527R-01ILF part is unused and in its original packaging.

Return procedure for 527R-01ILF:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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