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

Skyworks Solutions Inc. SI5342D-B05328-GMR

Name: SI5342D-B05328-GMR
Brand: Skyworks Solutions Inc.
SKU: SI5342D-B05328-GMR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SI5342D-B05328-GMR

Manufacturer:: Skyworks Solutions Inc.

Category:: Clock Generators, PLLs, Frequency Synthesizers

Package:: -

Datasheet:: SI5342D-B05328-GMR.pdf

Description:: IC CLK MULTIPLIER ATTENUATOR

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Product details

Overview

SI5342D-B05328-GMR from Skyworks is a 4-input, 2-output jitter attenuating clock multiplier with DSPLL™ and MultiSynth™ architecture, delivering 90 fs rms jitter, programmable jitter attenuation bandwidth (0.1 Hz–4 kHz), and support for LVDS/LVPECL/LVCMOS/CML/HCSL outputs. It operates across –40 to +85 °C and meets ITU-T G.8262 EEC Option 1 & 2 for Synchronous Ethernet applications in carrier-grade line cards.

For engineers reviewing the SI5342D-B05328-GMR datasheet, SI5342D-B05328-GMR pinout, SI5342D-B05328-GMR application, or SI5342D-B05328-GMR equivalent, this device is selected for high-stability timing in OTN transponders, SyncE switches, broadcast video systems, and test equipment where ultra-low jitter, hitless input switching, and holdover mode stability are critical design requirements.

Technical Context

The SI5342D-B05328-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 tailored to application-specific noise profiles. Its MultiSynth fractional-N synthesis supports independent output frequency generation from any input frequency within specified ranges.

It features automatic/manual input clock selection across four inputs (IN0–IN3), glitchless and hitless switching between plesiochronous or phase-locked sources, and status monitoring (LOS/OOF/LOL) with interrupt signaling. The device uses an external 25–54 MHz crystal on XA/XB for freerun/holdover reference stability and supports DCO mode with 0.001 ppb step size.

Key Specifications

Parameter	Value and Actual Design Meaning
Jitter (rms)	90 fs - enables compliance with stringent SyncE EEC Option 1/2 and 100G Ethernet timing budgets
Input range (diff)	8 kHz–750 MHz - supports legacy SONET/SDH, SyncE, and modern high-speed serial protocols
Output range (diff)	100 Hz–1028 MHz - covers baseband video, Ethernet PHYs, and SerDes reference clocks
Jitter BW control	0.1 Hz–4 kHz digital programming - allows optimization for wander suppression (low BW) or burst noise rejection (high BW)
Supply voltages	VDD = 1.8 V ±5%, VDDA = 3.3 V ±5% - ensures low-power operation with clean analog core biasing
Temp range	–40 to +85 °C - qualified for industrial and telecom infrastructure deployment
Crystal range	25–54 MHz - enables use of low-cost, high-stability fundamental-mode crystals without external load caps

Pinout & Package

SI5342D-B05328-GMR is housed in a 44-pin QFN package (7×7 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions align with the Si5342 family's standardized layout per Skyworks' Package Outline document (Rev. 1.2, p.52).

Pin/Terminal	Circuit Role	Design Meaning
IN0–IN3	Differential/single-ended clock inputs	Support automatic/manual selection; IN3 serves as FB_IN in zero-delay mode
OUT0, OUT1	Differential or LVCMOS clock outputs	Individually configurable for LVDS/LVPECL/CML/HCSL/LVCMOS with programmable amplitude and common-mode voltage
XA, XB	Crytal oscillator terminals	Internal 8–12 pF loading capacitors eliminate need for external caps; supports 25–54 MHz fundamental crystals
IN_SEL[1:0]	Manual input select control	Two-pin binary encoding selects active input (IN0–IN2); IN3 reserved in zero-delay mode
RSTb	Active-low hardware reset	Triggers full initialization and NVM register reload; required for deterministic power-up state
INTRb	Open-drain interrupt output	Asserts on LOS/OOF/LOL events; enables real-time fault monitoring without polling

Key Features

Feature	Design Value
Hitless input switching	Eliminates phase transients when switching between fractionally related clocks (e.g., 155.52 MHz ↔ 622.08 MHz), preserving system timing integrity
Programmable holdover	Uses up to 120 s of historical frequency data with user-defined averaging window to minimize phase jump during input failure
Digital DCO mode	Enables fine frequency tuning (0.001 ppb steps) via FINC/FDEC pins or SPI, supporting dynamic rate adaptation in test & measurement
Zero-delay mode	Configures IN3 as feedback input to align OUTx phase with IN0–IN2, critical for low-latency timing distribution networks
Status monitoring	Dedicated LOS/OOF/LOL flags and INTRb pin provide immediate visibility into input validity and PLL lock status

Applications

OTN Transponders	Synchronous Ethernet Switches
Use Scenario: Timing recovery and regeneration in 100G/400G OTN muxponders handling multiple client rates (e.g., 10G, 25G, 100G). IC Role / Device Role / Timing Role: Jitter attenuator and clock multiplier that cleans incoming WAN-side timing while generating precise parallel SerDes references. Use Value: Meets ITU-T G.709 jitter transfer and generation masks; 90 fs rms output jitter prevents BER degradation in coherent optics.	Use Scenario: Line-card timing in Carrier Ethernet aggregation switches requiring G.8262-compliant EEC clocks. IC Role / Device Role / Timing Role: Primary clock synthesizer providing EEC Option 1/2-compliant outputs to PHYs, MACs, and packet processors. Use Value: Programmable jitter attenuation bandwidth (0.1 Hz) suppresses wander from upstream SyncE sources while maintaining phase stability.
Broadcast Video Equipment	Test & Measurement Instruments
Use Scenario: Genlock and frame-synchronized clock generation in 4K/8K video routers, converters, and IP media gateways. IC Role / Device Role / Timing Role: Low-jitter master clock generator deriving SMPTE ST 2059-2 PTP-aligned outputs from GPS-disciplined or atomic references. Use Value: Ultra-low 90 fs rms jitter ensures sub-sample timing accuracy for high-resolution video sampling and transport.	Use Scenario: Reference clock source in high-precision signal analyzers, arbitrary waveform generators, and bit-error-rate testers. IC Role / Device Role / Timing Role: Programmable jitter cleaner and frequency synthesizer delivering stable, low-phase-noise clocks to ADC/DAC and sampling circuits. Use Value: DCO mode (0.001 ppb step) enables micro-hertz-level frequency sweeps for spectral purity validation and calibration.

OTN Transponders

Synchronous Ethernet Switches

Use Scenario: Timing recovery and regeneration in 100G/400G OTN muxponders handling multiple client rates (e.g., 10G, 25G, 100G).

IC Role / Device Role / Timing Role: Jitter attenuator and clock multiplier that cleans incoming WAN-side timing while generating precise parallel SerDes references.

Use Value: Meets ITU-T G.709 jitter transfer and generation masks; 90 fs rms output jitter prevents BER degradation in coherent optics.

Use Scenario: Line-card timing in Carrier Ethernet aggregation switches requiring G.8262-compliant EEC clocks.

IC Role / Device Role / Timing Role: Primary clock synthesizer providing EEC Option 1/2-compliant outputs to PHYs, MACs, and packet processors.

Use Value: Programmable jitter attenuation bandwidth (0.1 Hz) suppresses wander from upstream SyncE sources while maintaining phase stability.

Broadcast Video Equipment

Test & Measurement Instruments

Use Scenario: Genlock and frame-synchronized clock generation in 4K/8K video routers, converters, and IP media gateways.

IC Role / Device Role / Timing Role: Low-jitter master clock generator deriving SMPTE ST 2059-2 PTP-aligned outputs from GPS-disciplined or atomic references.

Use Value: Ultra-low 90 fs rms jitter ensures sub-sample timing accuracy for high-resolution video sampling and transport.

Use Scenario: Reference clock source in high-precision signal analyzers, arbitrary waveform generators, and bit-error-rate testers.

IC Role / Device Role / Timing Role: Programmable jitter cleaner and frequency synthesizer delivering stable, low-phase-noise clocks to ADC/DAC and sampling circuits.

Use Value: DCO mode (0.001 ppb step) enables micro-hertz-level frequency sweeps for spectral purity validation and calibration.

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	Integer-only synthesis (no fractional-N); same 2-output, 44-QFN package and 0.001–1028 MHz output range	Lacks fractional output flexibility; suitable only where exact integer ratios suffice	Select when cost sensitivity outweighs need for arbitrary frequency synthesis
LMK04832ISQE/NOPB	Two-stage PLL architecture; higher typical jitter (110 fs rms); supports JESD204B subclass 1	Includes integrated LDOs and JESD204B-specific features not present in SI5342D-B05328-GMR	Prefer when powering ADC/DAC directly or requiring deterministic latency for JESD204B

Compared with Si5342C-D-GM1, SI5342D-B05328-GMR provides fractional-N synthesis for arbitrary output frequencies, while versus LMK04832ISQE/NOPB it delivers lower jitter and simpler configuration but lacks integrated power regulation and JESD204B support-making it optimal for pure timing-critical SyncE and OTN roles.

Availability

SI5342D-B05328-GMR is available at Aetrix Electronics and suitable for OTN transponders, Synchronous Ethernet switches, broadcast video infrastructure, and test & measurement equipment requiring stable component supply, long-term lifecycle assurance, and guaranteed traceable sourcing.

Supply support for SI5342D-B05328-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 communications, industrial, and automotive markets.

The Si5342 product line is designed specifically for high-performance jitter attenuation and clock multiplication in telecom infrastructure, enterprise networking, and precision instrumentation-emphasizing ultra-low jitter, flexible synthesis, and robust holdover behavior.

FAQ

What is the maximum differential input frequency supported by SI5342D-B05328-GMR?

The SI5342D-B05328-GMR supports differential input frequencies from 8 kHz up to 750 MHz. This range accommodates legacy T1/E1, SONET OC-192, and modern 100G/400G Ethernet reference clocks. Operation above 250 MHz requires differential signaling; LVCMOS inputs are limited to 250 MHz maximum. The device automatically detects input type and configures termination accordingly.

Does SI5342D-B05328-GMR require external loop filter components?

No, SI5342D-B05328-GMR integrates the entire DSPLL loop filter on-chip. This eliminates external passive components, reduces PCB area, and removes sensitivity to board-level noise coupling-key for achieving its specified 90 fs rms jitter performance. Loop bandwidth is digitally programmable from 0.1 Hz to 4 kHz via SPI or I²C without hardware changes.

How does SI5342D-B05328-GMR handle loss of input clock?

Upon input clock failure, SI5342D-B05328-GMR automatically enters holdover mode using averaged historical frequency data (up to 120 seconds) stored during prior locked operation. The final holdover frequency is calculated from a programmable window within that history, minimizing phase disturbance. Output stability then depends solely on the 25–54 MHz crystal connected to XA/XB.

Can SI5342D-B05328-GMR generate both LVDS and LVCMOS outputs simultaneously?

Yes, SI5342D-B05328-GMR supports independent configuration of OUT0 and OUT1 for different signal formats-including LVDS, LVPECL, CML, HCSL, and LVCMOS-with programmable amplitude and common-mode voltage per output. Each output has dedicated supply pins (VDDOx) allowing 1.8 V, 2.5 V, or 3.3 V operation, enabling mixed-interface timing distribution from a single device.

Is SI5342D-B05328-GMR compliant with ITU-T G.8262 for Synchronous Ethernet?

Yes, SI5342D-B05328-GMR meets ITU-T G.8262 EEC Option 1 and Option 2 specifications when configured with appropriate loop bandwidth (e.g., 0.1 Hz for Option 1 wander suppression) and operating within its rated temperature range (–40 to +85 °C). Compliance is verified per Skyworks' characterization data in the Si5345/44/42 Rev D Data Sheet (Rev. 1.2, p.2).

SI5342D-B05328-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-B05328-GMR FAQ

1.How can I place an order for SI5342D-B05328-GMR through Aetrix?

Please submit a Request for Quotation (RFQ) for SI5342D-B05328-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-B05328-GMR reliable?

The price and inventory of SI5342D-B05328-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-B05328-GMR is usually 5 days.

3.What payment methods are accepted for SI5342D-B05328-GMR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI5342D-B05328-GMR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SI5342D-B05328-GMR?

SI5342D-B05328-GMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SI5342D-B05328-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-B05328-GMR?

For technical support, including SI5342D-B05328-GMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI5342D-B05328-GMR requirements.

6.How does Aetrix verify that SI5342D-B05328-GMR is sourced from the original manufacturer or authorized distributors?

All SI5342D-B05328-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-B05328-GMR meets industry standards.

7.What is the process for return or replacement of SI5342D-B05328-GMR?

All SI5342D-B05328-GMR units undergo pre-shipment inspection (PSI). If there is an issue with SI5342D-B05328-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-B05328-GMR part is unused and in its original packaging.

Return procedure for SI5342D-B05328-GMR:

1.Submit a request within 90 days.

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

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