Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Renesas 570BLFT

Name: 570BLFT
Brand: Renesas
SKU: 570BLFT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: 570BLFT

Manufacturer:: Renesas

Category:: Clock Generators, PLLs, Frequency Synthesizers

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: 570BLFT.pdf

Description:: IC FANOUT DIST 8SOIC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,251

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

The 570BLFT from IDT (now Renesas Electronics) is a 3.3 V zero-delay buffer and clock multiplier IC featuring integrated analog/digital PLL architecture, two CMOS clock outputs (CLK and CLK/2), and programmable multiplication from 0.5× to 32×. It delivers up to 170 MHz output frequency, ≤175 ps output-to-output skew, and supports industrial-grade operation (−40°C to +85°C) in an 8-pin SOIC package. It is used in PC, graphics, and data communications systems requiring precise clock synchronization with off-chip feedback.

For engineers reviewing the 570BLFT datasheet, 570BLFT pinout, 570BLFT application, or 570BLFT equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative parts with functional differences, and supply support for volume procurement and BOM continuity.

Technical Context

The 570BLFT implements a fully integrated analog/digital PLL with external feedback path selection (CLK or CLK/2), enabling true zero-delay alignment between ICLK input and CLK output rising edges. Its dual-output architecture provides one primary clock (CLK) and a low-skew /2 derivative (CLK/2), both with 45–55% duty cycle and full CMOS drive (25 mA at TTL levels).

Configuration is set via S1/S0 pins, selecting among 14 discrete multipliers (e.g., ×1, ×2, ×4, ×8, ×16, ×32) and supporting power-down/tri-state mode that halts the PLL and places both outputs in high-impedance state. It operates at 3.3 V ±5%, passes spread-spectrum clock modulation, and recovers degraded input duty cycle.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	3.3 V ±5% - ensures compatibility with modern low-voltage digital logic and eliminates need for level-shifting in 3.3 V systems.
Output Frequency Range	10–170 MHz - supports high-speed interfaces including PCI Express reference clocks and DDR memory timing.
Output-to-Output Skew	≤175 ps (ICS570B) - guarantees tight phase alignment between CLK and CLK/2 for synchronous sampling across multiple domains.
Input-to-Output Jitter	100–250 ps (40–150 MHz) - enables clean clock distribution in noise-sensitive video and communication PHY layers.
Multiplier Range	0.5× to 32× - allows flexible clock synthesis from low-frequency crystals (e.g., 1.5625 MHz → 50 MHz) without external dividers.
Duty Cycle	45/55% at VDD/2 - maintains balanced high/low time for reliable setup/hold timing in flip-flop-based logic.
Operating Temperature	−40°C to +85°C - qualified for industrial environments including network switches and embedded graphics controllers.

Pinout & Package

Package: 8-pin SOIC (150 mil body), RoHS-compliant, Pb-free (LF suffix), JEDEC MS-012AC compliant.

Pin/Terminal	Circuit Role	Design Meaning
S1	Multiplier select input	Configures clock multiplication factor with S0; connects to GND/VDD/floating per decoding table (e.g., S1=1, S0=1 → ×2 mode).
VDD	Power supply	+3.3 V supply input; requires 0.01 µF decoupling capacitor placed near pin to suppress high-frequency noise.
GND	Ground reference	Common return path for all internal circuits and output drivers; must be low-inductance connection.
ICLK	Reference clock input	Accepts input clock (e.g., crystal oscillator or system clock); VIH ≥2 V, VIL ≤0.8 V, Cin = 5 pF.
FBIN	Feedback clock input	Receives CLK or CLK/2 for PLL lock; supports both feedback paths to optimize edge alignment and jitter performance.
S0	Multiplier select input	LSB of 2-bit multiplier control; works with S1 to select one of 14 multiplication ratios (e.g., ×4, ×8, ×16).
CLK	Main clock output	Primary CMOS output clock (up to 170 MHz); full-swing, 25 mA drive capability, rise/fall time ≤0.75 ns.
CLK/2	Divided clock output	Low-skew /2 derivative of CLK; synchronized rising edges; used for peripheral timing or secondary domain clocks.

Key Features

Feature	Design Value
Zero-delay buffer functionality	Aligns rising edge of ICLK input with CLK output - eliminates cumulative propagation delay in clock trees.
Programmable multiplication (14 ratios)	Enables single-device clock synthesis across diverse system frequencies without external PLL ICs or dividers.
CLK/2 output with low skew	Provides deterministic /2 clock with ≤175 ps skew vs. CLK - ideal for dual-edge-triggered or divided-clock domains.
Power-down/tri-state mode	Stops internal PLL and forces both outputs into high-Z - reduces system power during idle states or dynamic reconfiguration.
Spread-spectrum clocking support	Passes modulated input clocks without distortion - meets EMI reduction requirements in consumer and computing platforms.

Applications

Graphics Timing Controller	PCI Express Reference Clock
Use Scenario: Synchronizing pixel clock, memory interface, and display engine in embedded GPU subsystems. IC Role / Device Role / Timing Role: Zero-delay buffer generating aligned CLK and CLK/2 for parallel pixel pipelines and frame buffer access. Use Value: Eliminates inter-domain skew between rendering and display logic, enabling stable 1080p/60Hz output without FIFO buffering.	Use Scenario: Providing clean 100 MHz reference clock to PCIe root complex and endpoint devices. IC Role / Device Role / Timing Role: Clock multiplier and jitter cleaner delivering low-skew, spread-spectrum-compatible 100 MHz CLK from 25 MHz crystal. Use Value: Meets PCIe Gen2/Gen3 jitter compliance (≤100 ps RMS) while supporting dynamic link training and lane margining.
Industrial Network Switch	Digital Video Encoder
Use Scenario: Distributing synchronized clocks across multiple Ethernet PHYs and packet processing ASICs. IC Role / Device Role / Timing Role: Multiplier and zero-delay buffer generating matched clocks for 1G/2.5G PHYs and MAC-layer logic. Use Value: Ensures deterministic packet timestamping and reduces inter-PHY skew below 200 ps for IEEE 1588 PTP accuracy.	Use Scenario: Driving pixel clock and line sync signals in HDMI/DVI encoder ICs for broadcast equipment. IC Role / Device Role / Timing Role: Generating 74.25 MHz pixel clock and 27 MHz audio clock from common 27 MHz source via ×2.75 and ×1 modes. Use Value: Maintains sub-pixel timing integrity across RGB/YUV paths and avoids visible line jitter or color fringing.

Graphics Timing Controller

PCI Express Reference Clock

Use Scenario: Synchronizing pixel clock, memory interface, and display engine in embedded GPU subsystems.

IC Role / Device Role / Timing Role: Zero-delay buffer generating aligned CLK and CLK/2 for parallel pixel pipelines and frame buffer access.

Use Value: Eliminates inter-domain skew between rendering and display logic, enabling stable 1080p/60Hz output without FIFO buffering.

Use Scenario: Providing clean 100 MHz reference clock to PCIe root complex and endpoint devices.

IC Role / Device Role / Timing Role: Clock multiplier and jitter cleaner delivering low-skew, spread-spectrum-compatible 100 MHz CLK from 25 MHz crystal.

Use Value: Meets PCIe Gen2/Gen3 jitter compliance (≤100 ps RMS) while supporting dynamic link training and lane margining.

Industrial Network Switch

Digital Video Encoder

Use Scenario: Distributing synchronized clocks across multiple Ethernet PHYs and packet processing ASICs.

IC Role / Device Role / Timing Role: Multiplier and zero-delay buffer generating matched clocks for 1G/2.5G PHYs and MAC-layer logic.

Use Value: Ensures deterministic packet timestamping and reduces inter-PHY skew below 200 ps for IEEE 1588 PTP accuracy.

Use Scenario: Driving pixel clock and line sync signals in HDMI/DVI encoder ICs for broadcast equipment.

IC Role / Device Role / Timing Role: Generating 74.25 MHz pixel clock and 27 MHz audio clock from common 27 MHz source via ×2.75 and ×1 modes.

Use Value: Maintains sub-pixel timing integrity across RGB/YUV paths and avoids visible line jitter or color fringing.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ICS570A	5 V supply only; higher input-to-output jitter (up to 600 ps for ICS570M legacy version); no 3.3 V operation.	Restricted to legacy 5 V designs; incompatible with mixed-voltage or modern low-power systems.	Select only if existing 5 V infrastructure prohibits voltage translation and 5 V tolerance is required.
ICS570M	Legacy version with higher jitter (600 ps typical), no spread-spectrum support, and no 3.3 V option; pin-compatible but not functionally equivalent.	Limited to non-SSC applications; unsuitable for PCIe, USB, or HDMI where SSC compliance is mandatory.	Not recommended for new designs; use 570BLFT for improved jitter, SSC support, and 3.3 V compatibility.

Compared with ICS570A and ICS570M, the 570BLFT offers lower jitter (100–250 ps), guaranteed 3.3 V operation, spread-spectrum clocking support, and industrial temperature range - making it the preferred choice for new industrial, graphics, and high-speed serial interface designs.

Availability

570BLFT is available at Aetrix Electronics and suitable for graphics timing controllers, PCIe reference clock generation, industrial network switches, and digital video encoders requiring stable component supply, long-term BOM continuity, and RoHS-compliant packaging.

Supply support for 570BLFT 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

IDT (Integrated Device Technology), now part of Renesas Electronics, is a global leader in timing, memory interface, and RF solutions, specializing in high-performance clock generation and distribution ICs.

The 570BLFT belongs to IDT's ClockBlocks™ family, designed specifically to replace legacy clock buffers with enhanced jitter performance, zero-delay alignment, and flexible multiplication for computing, communications, and graphics applications.

FAQ

What is the operating voltage range for the 570BLFT?

The 570BLFT operates at 3.3 V ±5% (3.15 V to 3.45 V). This fixed voltage requirement is specified in the DC Electrical Characteristics table and confirmed in the Ordering Information section. Unlike the 5 V-only ICS570A variant, the 570BLFT is not rated for 5 V operation - applying 5 V will exceed absolute maximum ratings and may cause permanent damage. The 570BLFT must be powered from a regulated 3.3 V rail with local 0.01 µF decoupling.

Does the 570BLFT support spread-spectrum clocking (SSC)?

Yes, the 570BLFT explicitly passes spread-spectrum clock modulation, as stated in the Features list on page 1 of the datasheet. This capability allows it to accept and distribute modulated reference clocks without introducing additional jitter or distortion - a critical requirement for PCIe, SATA, and USB compliance testing. The 570BLFT maintains its specified jitter performance (100–250 ps) even with SSC input, unlike the legacy ICS570M which lacks this feature.

How many multiplier options does the 570BLFT provide, and how are they selected?

The 570BLFT provides 14 discrete multiplication ratios ranging from 0.5× to 32×, selected using the S1 and S0 pins per the Clock Multiplier Decoding Table on page 2. Each combination (e.g., S1=1, S0=0) maps to specific multipliers for CLK and CLK/2 outputs depending on FBIN source (CLK or CLK/2). Selection is static at power-up and requires no serial interface - configuration is purely hardware-based via pull-up/pull-down or floating connections.

What is the maximum output frequency supported by the 570BLFT?

The 570BLFT supports an output clock frequency up to 170 MHz, as specified in the AC Electrical Characteristics table on page 8. This maximum applies to the CLK output under 3.3 V operation and is validated across the industrial temperature range (−40°C to +85°C). The CLK/2 output is inherently limited to half that frequency (≤85 MHz), but maintains the same low skew (≤175 ps) relative to CLK.

Is the 570BLFT pin-compatible with earlier ICS570 variants?

Yes, the 570BLFT is pin-for-pin compatible with the ICS570M and ICS570A variants, as confirmed in the Features section ("Pin-for-pin replacement and upgrade to ICS570M"). All share identical 8-pin SOIC pinout, signal assignments, and footprint. However, electrical behavior differs: the 570BLFT requires 3.3 V only, offers lower jitter, and adds spread-spectrum support - so while PCB layout remains unchanged, power supply and system-level timing validation must reflect these improvements.

570BLFT Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: ClockBlocks™

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Type:: Fanout Distribution, Spread Spectrum Clock Generator, Zero Delay Buffer

PLL:: Yes

Input:: Clock

Output:: CMOS

Number of Circuits:: 1

Ratio - Input:Output:: 1:2

Differential - Input:Output:: No/No

Frequency - Max:: 170MHz

Divider/Multiplier:: Yes/Yes

Voltage - Supply:: 3.15V ~ 3.45V

Operating Temperature:: 0°C ~ 70°C

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

Supplier Device Package:: 8-SOIC

570BLFT FAQ

1.How can I place an order for 570BLFT through Aetrix?

Please submit a Request for Quotation (RFQ) for 570BLFT 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 570BLFT reliable?

The price and inventory of 570BLFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 570BLFT is usually 5 days.

3.What payment methods are accepted for 570BLFT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 570BLFT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 570BLFT?

570BLFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 570BLFT 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 570BLFT?

For technical support, including 570BLFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 570BLFT requirements.

6.How does Aetrix verify that 570BLFT is sourced from the original manufacturer or authorized distributors?

All 570BLFT 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 570BLFT meets industry standards.

7.What is the process for return or replacement of 570BLFT?

All 570BLFT units undergo pre-shipment inspection (PSI). If there is an issue with 570BLFT, 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 570BLFT part is unused and in its original packaging.

Return procedure for 570BLFT:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…