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

Skyworks Solutions Inc. SI5342D-B03452-GMR

Name: SI5342D-B03452-GMR
Brand: Skyworks Solutions Inc.
SKU: SI5342D-B03452-GMR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SI5342D-B03452-GMR

Manufacturer:: Skyworks Solutions Inc.

Category:: Clock Generators, PLLs, Frequency Synthesizers

Package:: -

Datasheet:: SI5342D-B03452-GMR.pdf

Description:: IC CLK MULTIPLIER ATTENUATOR

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Product details

Overview

SI5342D-B03452-GMR from Skyworks is a 4-input, 2-output jitter attenuating clock multiplier with DSPLL™ and MultiSynth™ architecture, delivering 90 fs rms integrated jitter (12 kHz–20 MHz), programmable jitter attenuation bandwidth (0.1 Hz–4 kHz), and support for SyncE compliance (ITU-T G.8262 EEC Option 1/2). It operates across –40 to +85 °C and serves as the timing engine in carrier-grade Ethernet line cards.

For engineers reviewing the SI5342D-B03452-GMR datasheet, SI5342D-B03452-GMR pinout, SI5342D-B03452-GMR application, or SI5342D-B03452-GMR equivalent, key selection criteria include its 2-output configuration, 0.001–350 MHz output frequency range (integer-only synthesis), 44-QFN 7×7 mm package, and dual-supply operation (VDD = 1.8 V, VDDA = 3.3 V).

Technical Context

The SI5342D-B03452-GMR implements a fourth-generation DSPLL with fully integrated loop filter and digitally programmable loop bandwidth (0.1 Hz–4 kHz), enabling precise jitter filtering for SyncE-compliant systems. Its MultiSynth dividers support integer-only frequency synthesis, and input switching includes automatic prioritization, hitless transition between fractionally related clocks, and glitchless pull-in for ±500 ppm input offsets.

It features four configurable inputs (differential or LVCMOS, 8 kHz–750 MHz / 8 kHz–250 MHz), two independently programmable outputs compatible with LVDS/LVPECL/LVCMOS/CML/HCSL, and status monitoring (LOS/OOF/LOL) with interrupt assertion. The device powers up from on-chip OTP NVM with factory-programmed configuration B03452.

Key Specifications

Parameter	Value and Actual Design Meaning
Output count	2 independent, fully configurable clock outputs
Jitter (rms)	90 fs (12 kHz–20 MHz), enabling ITU-T G.8262 EEC Option 1/2 compliance
Output frequency range	100 Hz–350 MHz (integer-only synthesis mode)
Input frequency range	Differential: 8 kHz–750 MHz; LVCMOS: 8 kHz–250 MHz
Jitter attenuation BW	Digitally programmable 0.1 Hz–4 kHz, optimized per application
Supply voltages	VDD = 1.8 V ±5% (core); VDDA = 3.3 V ±5% (analog/outputs)
Operating temperature	–40 °C to +85 °C, qualified for industrial and telecom infrastructure

Pinout & Package

The SI5342D-B03452-GMR is housed in a 44-pin QFN package (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per Skyworks' official pinout documentation for Si5342 Rev D.

Pin/Terminal	Circuit Role	Design Meaning
IN0–IN3	Input clock terminals	Four configurable inputs accepting differential or LVCMOS signals; IN3 serves as FB_IN in zero-delay mode
OUT0, OUT1	Differential clock outputs	Two fully programmable outputs supporting LVDS/LVPECL/CML/HCSL/LVCMOS with independent amplitude and common-mode control
XA/XB	Crytal oscillator interface	Connects to 25–54 MHz fundamental-mode crystal; internal load caps eliminate external components
SDA/SCL	I²C serial interface	Two-wire bus for configuration, status readback, and NVM programming
INTRb	Interrupt output	Open-drain flag signaling LOS, OOF, or LOL events per register configuration
RSTb	Hardware reset	Active-low asynchronous reset initiating full initialization and NVM reload

Key Features

Feature	Design Value
Integer-only synthesis mode	Enables deterministic, low-latency frequency planning for 0.001–350 MHz outputs without fractional spurs
Hitless input switching	Eliminates phase transients when switching between fractionally related input clocks (e.g., 155.52 MHz ↔ 622.08 MHz)
Programmable holdover	Uses 120-second averaged historical lock frequency for stable phase-continuous holdover during input failure
SyncE compliance	Fully meets ITU-T G.8262 EEC Option 1 and Option 2 requirements for synchronous Ethernet equipment clocks
Factory preprogrammed NVM	Configuration B03452 loaded at power-up-no external programming required for default operation

Applications

Carrier Ethernet Line Cards	OTN Muxponders
Use Scenario: Timing recovery and distribution in 10G/100G line cards requiring strict wander and jitter limits per ITU-T G.8262. IC Role / Device Role / Timing Role: Jitter attenuator and clock multiplier generating synchronized 156.25 MHz, 311.04 MHz, and 622.08 MHz outputs from recovered OTN tributary clocks. Use Value: 90 fs rms jitter ensures meeting G.8262 EEC Option 2 mask; integer-only mode guarantees deterministic phase alignment across multiple SERDES lanes.	Use Scenario: Aggregating multiple client-side rates (e.g., 1.25 GbE, 10GbE) into OTN frames with precise timing alignment. IC Role / Device Role / Timing Role: Reference clock generator and jitter cleaner for OTN framers and mapping logic, locking to line-side SyncE or BITS reference. Use Value: Programmable jitter attenuation bandwidth (0.1 Hz) suppresses low-frequency wander while preserving high-frequency phase integrity for OTN TSG compliance.
Broadcast Video Infrastructure	Test & Measurement Equipment
Use Scenario: Genlock and frame-synchronized clock distribution in SDI routers, converters, and IP video gateways. IC Role / Device Role / Timing Role: Dual-output jitter attenuator providing clean 27 MHz and 74.25 MHz clocks derived from a master house sync or GPSDO reference. Use Value: Ultra-low 90 fs jitter prevents visible artifacts in 4K/8K video; LVCMOS/LVDS dual-format outputs simplify interface to FPGA-based video processing blocks.	Use Scenario: High-precision clock source in bit-error-rate testers (BERTs), oscilloscopes, and signal analyzers requiring sub-100 fs jitter. IC Role / Device Role / Timing Role: Low-jitter programmable oscillator and jitter cleaner feeding ADC/DAC sampling clocks and pattern generator timing engines. Use Value: Factory-programmed B03452 config enables immediate deployment; 0.1 Hz–4 kHz adjustable loop BW allows optimization for instrument-specific noise profiles.

Carrier Ethernet Line Cards

OTN Muxponders

Use Scenario: Timing recovery and distribution in 10G/100G line cards requiring strict wander and jitter limits per ITU-T G.8262.

IC Role / Device Role / Timing Role: Jitter attenuator and clock multiplier generating synchronized 156.25 MHz, 311.04 MHz, and 622.08 MHz outputs from recovered OTN tributary clocks.

Use Value: 90 fs rms jitter ensures meeting G.8262 EEC Option 2 mask; integer-only mode guarantees deterministic phase alignment across multiple SERDES lanes.

Use Scenario: Aggregating multiple client-side rates (e.g., 1.25 GbE, 10GbE) into OTN frames with precise timing alignment.

IC Role / Device Role / Timing Role: Reference clock generator and jitter cleaner for OTN framers and mapping logic, locking to line-side SyncE or BITS reference.

Use Value: Programmable jitter attenuation bandwidth (0.1 Hz) suppresses low-frequency wander while preserving high-frequency phase integrity for OTN TSG compliance.

Broadcast Video Infrastructure

Test & Measurement Equipment

Use Scenario: Genlock and frame-synchronized clock distribution in SDI routers, converters, and IP video gateways.

IC Role / Device Role / Timing Role: Dual-output jitter attenuator providing clean 27 MHz and 74.25 MHz clocks derived from a master house sync or GPSDO reference.

Use Value: Ultra-low 90 fs jitter prevents visible artifacts in 4K/8K video; LVCMOS/LVDS dual-format outputs simplify interface to FPGA-based video processing blocks.

Use Scenario: High-precision clock source in bit-error-rate testers (BERTs), oscilloscopes, and signal analyzers requiring sub-100 fs jitter.

IC Role / Device Role / Timing Role: Low-jitter programmable oscillator and jitter cleaner feeding ADC/DAC sampling clocks and pattern generator timing engines.

Use Value: Factory-programmed B03452 config enables immediate deployment; 0.1 Hz–4 kHz adjustable loop BW allows optimization for instrument-specific noise profiles.

Equivalent & Alternatives

The following parts are listed as comparable options for similar jitter attenuator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Si5342C-D-GM1	Same 4-in/2-out architecture but supports integer + fractional synthesis (0.001–1028 MHz)	Required where arbitrary frequencies >350 MHz or fractional ratios (e.g., 122.88 MHz) are needed	Select Si5342C-D-GM1 only if design requires >350 MHz outputs or non-integer multiples; SI5342D-B03452-GMR is optimal for fixed 100–350 MHz integer plans.
LMK04832ISQE/NOPB	2-input/14-output, dual-loop PLL with higher integration but 115 fs rms jitter (12 kHz–20 MHz)	Suitable for multi-channel clock trees needing >2 outputs or cascaded jitter cleaning	Choose LMK04832ISQE/NOPB when scaling beyond 2 outputs or requiring JESD204B subclass 1 support; SI5342D-B03452-GMR offers superior jitter for compact 2-output SyncE nodes.

Compared with Si5342C-D-GM1, SI5342D-B03452-GMR trades fractional flexibility for tighter jitter and simpler configuration; versus LMK04832ISQE/NOPB, it delivers lower jitter in a smaller footprint but with fewer outputs-making it ideal for cost- and space-constrained 2-output SyncE line cards.

Availability

SI5342D-B03452-GMR is available at Aetrix Electronics and suitable for carrier Ethernet switches, OTN muxponder timing modules, and broadcast video genlock systems requiring stable component supply, long-term lifecycle assurance, and factory-traceable preconfiguration.

Supply support for SI5342D-B03452-GMR 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

Skyworks Solutions is a global semiconductor company specializing in analog and mixed-signal connectivity solutions for infrastructure, automotive, and mobile markets.

The Si5342 family is designed specifically for high-reliability telecom and networking timing applications, delivering ultra-low jitter, SyncE compliance, and field-programmable flexibility in compact QFN packages.

FAQ

What is the primary function of the SI5342D-B03452-GMR in a timing system?

The SI5342D-B03452-GMR functions as a jitter attenuating clock multiplier that cleans and regenerates timing signals in telecom and networking equipment. It locks to noisy or wandering input references-such as recovered OTN or SyncE line clocks-and produces two ultra-low-jitter (90 fs rms) output clocks. Its DSPLL architecture, factory-programmed B03452 configuration, and integer-only synthesis mode make SI5342D-B03452-GMR especially suited for deterministic, low-phase-noise timing in carrier-grade Ethernet line cards.

Does the SI5342D-B03452-GMR support fractional frequency synthesis?

No, the SI5342D-B03452-GMR is configured for integer-only synthesis, as indicated by the "D" suffix in the Si5342 ordering guide and confirmed in the datasheet's Ordering Guide table. It supports output frequencies from 0.001 MHz to 350 MHz using integer MultiSynth division only-eliminating fractional spurs and simplifying phase alignment in applications like SONET/SDH and SyncE where deterministic jitter behavior is critical. This distinguishes SI5342D-B03452-GMR from Si5342A/C variants.

What package type and footprint does the SI5342D-B03452-GMR use?

The SI5342D-B03452-GMR uses a 44-pin QFN package measuring 7 mm × 7 mm with 0.5 mm pitch and an exposed thermal pad. This matches the standard footprint for Si5342 and Si5344 devices per Skyworks' Package Outlines document. The package is RoHS-6 compliant and rated for –40 °C to +85 °C operation. PCB layout must follow Skyworks' recommended land pattern (documented in Section 11 of the datasheet) to ensure thermal performance and signal integrity.

How is the SI5342D-B03452-GMR configured at power-up?

The SI5342D-B03452-GMR powers up with its factory-programmed configuration B03452 stored in on-chip one-time-programmable (OTP) NVM. This eliminates the need for external configuration during boot and ensures repeatable, known-frequency operation immediately after power-on. Configuration B03452 defines specific input/output mappings, loop bandwidth, output formats, and voltage settings-verified and validated by Skyworks prior to shipment. Users may reprogram SI5342D-B03452-GMR via I²C or SPI if required, but default operation relies entirely on the preloaded B03452 image.

Which communication interface does the SI5342D-B03452-GMR support for configuration and monitoring?

The SI5342D-B03452-GMR supports both I²C and SPI serial interfaces for configuration, status monitoring, and NVM programming. Pins SDA/SCL implement the I²C bus (up to 400 kHz standard mode), while SDIO/SCLK/CSb enable SPI operation (up to 10 MHz). Both interfaces provide full register-level access to all device functions-including input selection, output format, jitter attenuation bandwidth, and fault status flags (LOS/OOF/LOL). The choice between I²C and SPI depends on host controller capability and board routing constraints; SI5342D-B03452-GMR operates identically over either interface.

SI5342D-B03452-GMR Specifications

Product attributes: Attribute value

Manufacturer:: Skyworks Solutions Inc.

Series:: *

Package/Case:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Type:: -

PLL:: -

Input:: -

Output:: -

Number of Circuits:: -

Ratio - Input:Output:: -

Differential - Input:Output:: -

Frequency - Max:: -

Divider/Multiplier:: -

Voltage - Supply:: -

Operating Temperature:: -

Mounting Type:: -

Grade:: -

Qualification:: -

Supplier Device Package:: -

SI5342D-B03452-GMR FAQ

1.How can I place an order for SI5342D-B03452-GMR through Aetrix?

Please submit a Request for Quotation (RFQ) for SI5342D-B03452-GMR 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 SI5342D-B03452-GMR reliable?

The price and inventory of SI5342D-B03452-GMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI5342D-B03452-GMR is usually 5 days.

3.What payment methods are accepted for SI5342D-B03452-GMR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI5342D-B03452-GMR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SI5342D-B03452-GMR?

SI5342D-B03452-GMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SI5342D-B03452-GMR 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 SI5342D-B03452-GMR?

For technical support, including SI5342D-B03452-GMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI5342D-B03452-GMR requirements.

6.How does Aetrix verify that SI5342D-B03452-GMR is sourced from the original manufacturer or authorized distributors?

All SI5342D-B03452-GMR 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 SI5342D-B03452-GMR meets industry standards.

7.What is the process for return or replacement of SI5342D-B03452-GMR?

All SI5342D-B03452-GMR units undergo pre-shipment inspection (PSI). If there is an issue with SI5342D-B03452-GMR, 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 SI5342D-B03452-GMR part is unused and in its original packaging.

Return procedure for SI5342D-B03452-GMR:

1.Submit a request within 90 days.

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

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