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

Skyworks Solutions Inc. SI5344A-B06214-GMR

Name: SI5344A-B06214-GMR
Brand: Skyworks Solutions Inc.
SKU: SI5344A-B06214-GMR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SI5344A-B06214-GMR

Manufacturer:: Skyworks Solutions Inc.

Category:: Clock Generators, PLLs, Frequency Synthesizers

Package:: -

Datasheet:: SI5344A-B06214-GMR.pdf

Description:: IC CLK BUFFER PLL 44QFN

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Product details

Overview

SI5344A-B06214-GMR from Skyworks is a 4-input, 4-output jitter-attenuating clock multiplier with fourth-generation DSPLL™ and MultiSynth™ architecture. It delivers ultra-low 90 fs rms jitter, supports differential inputs up to 750 MHz and outputs up to 1028 MHz, and meets ITU-T G.8262 EEC Option 1/2 for Synchronous Ethernet. It is used in carrier-grade 10/40/100G line cards requiring hitless clock switching and holdover stability.

For engineers reviewing the SI5344A-B06214-GMR datasheet, SI5344A-B06214-GMR pinout, SI5344A-B06214-GMR application, or SI5344A-B06214-GMR equivalent, key selection considerations include its 44-QFN 7×7 mm package, programmable jitter attenuation bandwidth (0.1 Hz–4 kHz), dual-mode operation (locked/holdover), I²C/SPI configurability, and compliance with SyncE timing standards.

Technical Context

The SI5344A-B06214-GMR implements a digitally controlled DSPLL with integrated loop filter and programmable loop bandwidth (0.1 Hz–4 kHz), enabling precise jitter filtering and optimization per application. Its MultiSynth output dividers support both integer and fractional synthesis, allowing any-output-frequency generation from any-input-frequency across four independent outputs.

It features automatic and manual input clock switching with hitless, ramped, and glitchless modes; status monitoring (LOS/OOF/LOL); and configurable output formats (LVDS, LVPECL, LVCMOS, CML, HCSL) with programmable amplitude and common-mode voltage. Core supply is 1.8 V ±5%, analog supply 3.3 V ±5%, and output supplies support 1.8 V/2.5 V/3.3 V independently.

Key Specifications

Parameter	Value and Actual Design Meaning
Jitter (rms)	90 fs - enables meeting stringent SyncE EEC Option 1/2 phase noise requirements in telecom infrastructure
Input range (diff)	8 kHz–750 MHz - supports legacy SONET/SDH, Ethernet, and OTN reference clocks without external conditioning
Output range (diff)	100 Hz–1028 MHz - covers all standard Ethernet rates (1G/10G/25G/100G) and OTN OTU4 (111.81 Gbps line rate)
Jitter BW	0.1 Hz–4 kHz - digitally selectable to optimize attenuation vs. transient response for specific network timing profiles
Supply voltages	VDD = 1.8 V ±5%, VDDA = 3.3 V ±5% - ensures low-power operation while maintaining analog integrity for sub-100-fs jitter
Temp range	–40 °C to +85 °C - qualified for industrial and telecom equipment operating in uncontrolled environments
SyncE compliance	ITU-T G.8262 EEC Option 1 & 2 - certifies suitability for Carrier Ethernet synchronization without additional timing validation

Pinout & Package

The SI5344A-B06214-GMR is housed in a 44-pin QFN package measuring 7 mm × 7 mm with 0.5 mm pitch and exposed thermal pad. Pin assignments are defined per Skyworks' official Si5344 pinout documentation (Rev D, Section 9).

Pin/Terminal	Circuit Role	Design Meaning
IN0–IN3	Differential/LVCMOS input	Four configurable clock inputs supporting automatic/manual selection, gapped clock lock, and hitless switching
OUT0–OUT3	Programmable output	Four independent outputs supporting LVDS/LVPECL/LVCMOS/CML/HCSL with per-output voltage and amplitude control
XA/XB	Crytal oscillator interface	Connects to 25–54 MHz fundamental-mode crystal; internal load caps eliminate external components
SCL/SDA	I²C serial interface	Two-wire bus for configuration, status readback, and NVM programming without requiring SPI hardware
INTRb	Interrupt output	Open-drain flag signaling LOS, OOF, or LOL events-enables real-time fault monitoring in carrier systems
RSTb	Hardware reset	Asynchronous active-low pin initiating full initialization and NVM reload-critical for system-level recovery sequences

Key Features

Feature	Design Value
Hitless input switching	Eliminates phase transients when switching between frequency-locked inputs (e.g., redundant SyncE sources), preserving packet timing integrity
Programmable holdover	Uses 120-second frequency history window to compute stable holdover frequency-reduces wander during input failure in telecom base stations
Zero delay mode	Configures IN3 as FB_IN to align output phase with selected input-required for deterministic latency in fronthaul timing applications
DCO mode	Enables fine frequency tuning (as low as 0.001 ppb step) via FINC/FDEC pins-supports IEEE 1588 PTP slave clock calibration
Glitchless output reconfiguration	Allows on-the-fly output frequency changes without disrupting downstream logic-essential for dynamic rate adaptation in multi-service line cards

Applications

OTN Muxponder Timing	Carrier Ethernet Switch
Use Scenario: Provides synchronized clocking for OTN framing, mapping, and multiplexing in metro/core transport nodes with dual-redundant timing inputs. IC Role / Device Role / Timing Role: Jitter attenuator and clock multiplier generating clean 155.52 MHz, 622.08 MHz, and 2.488 GHz clocks from degraded line references. Use Value: Meets ITU-T G.709 jitter tolerance masks and enables <100 fs RMS output jitter required for OTU4 FEC decoding.	Use Scenario: Delivers primary and backup timing for distributed switch fabrics where multiple ASICs require phase-aligned clocks at 125 MHz, 156.25 MHz, and 312.5 MHz. IC Role / Device Role / Timing Role: Synchronous Ethernet timing engine providing EEC-compliant outputs with automatic switchover between grandmaster and backup PTP clocks. Use Value: Enables hitless failover with <1 µs phase transient-preserving time-sensitive traffic (e.g., VoIP, industrial control) during input loss.
Broadcast Video Sync	Test & Measurement Instrument
Use Scenario: Generates genlock-capable pixel clocks (e.g., 74.25 MHz, 148.5 MHz) and frame sync signals for 4K/8K video processing pipelines. IC Role / Device Role / Timing Role: Low-jitter clock synthesizer locked to tri-level sync or SDI reference, supporting SMPTE ST 2059-2 PTP timing. Use Value: Achieves <0.1 UI jitter on 12G-SDI outputs-preventing visible artifacts and frame drops in professional broadcast gear.	Use Scenario: Supplies ultra-stable sampling clocks (100 MHz–1 GHz) and trigger references for high-speed oscilloscopes and bit-error-rate testers. IC Role / Device Role / Timing Role: Jitter-attenuated clock source with programmable loop bandwidth to isolate instrument PLLs from noisy system power rails. Use Value: Reduces measurement uncertainty by >50% compared to direct crystal-based clocks-critical for sub-picosecond edge placement accuracy.

OTN Muxponder Timing

Carrier Ethernet Switch

Use Scenario: Provides synchronized clocking for OTN framing, mapping, and multiplexing in metro/core transport nodes with dual-redundant timing inputs.

IC Role / Device Role / Timing Role: Jitter attenuator and clock multiplier generating clean 155.52 MHz, 622.08 MHz, and 2.488 GHz clocks from degraded line references.

Use Value: Meets ITU-T G.709 jitter tolerance masks and enables <100 fs RMS output jitter required for OTU4 FEC decoding.

Use Scenario: Delivers primary and backup timing for distributed switch fabrics where multiple ASICs require phase-aligned clocks at 125 MHz, 156.25 MHz, and 312.5 MHz.

IC Role / Device Role / Timing Role: Synchronous Ethernet timing engine providing EEC-compliant outputs with automatic switchover between grandmaster and backup PTP clocks.

Use Value: Enables hitless failover with <1 µs phase transient-preserving time-sensitive traffic (e.g., VoIP, industrial control) during input loss.

Broadcast Video Sync

Test & Measurement Instrument

Use Scenario: Generates genlock-capable pixel clocks (e.g., 74.25 MHz, 148.5 MHz) and frame sync signals for 4K/8K video processing pipelines.

IC Role / Device Role / Timing Role: Low-jitter clock synthesizer locked to tri-level sync or SDI reference, supporting SMPTE ST 2059-2 PTP timing.

Use Value: Achieves <0.1 UI jitter on 12G-SDI outputs-preventing visible artifacts and frame drops in professional broadcast gear.

Use Scenario: Supplies ultra-stable sampling clocks (100 MHz–1 GHz) and trigger references for high-speed oscilloscopes and bit-error-rate testers.

IC Role / Device Role / Timing Role: Jitter-attenuated clock source with programmable loop bandwidth to isolate instrument PLLs from noisy system power rails.

Use Value: Reduces measurement uncertainty by >50% compared to direct crystal-based clocks-critical for sub-picosecond edge placement accuracy.

Equivalent & Alternatives

The following parts are listed as comparable options for similar jitter-attenuating clock multiplier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Si5344A-D-GM1	Same silicon, factory-configured with default NVM settings; no preprogrammed custom frequency plan	Lacks user-specific output frequencies and input priorities; requires post-silicon configuration via ClockBuilder Pro	Select when flexibility to configure in-system is preferred over guaranteed out-of-box timing behavior
LMK04832RHAT	Two-stage PLL architecture (jitter cleaner + clock generator); higher power (320 mW vs. 240 mW); supports JESD204B SYSREF	Targeted at RF/data converter timing; includes digital delay and skew adjustment not present in SI5344A-B06214-GMR	Select when deterministic latency control, multi-device synchronization, or JESD204B support is required

Compared with SI5344A-D-GM1, the SI5344A-B06214-GMR offers guaranteed factory-programmed timing behavior for immediate deployment, while LMk04832RHAT provides advanced RF timing features at higher power and cost-making SI5344A-B06214-GMR optimal for cost-sensitive, high-volume SyncE line cards where prevalidated timing is critical.

Availability

SI5344A-B06214-GMR is available at Aetrix Electronics and suitable for 10/40/100G networking line cards, Synchronous Ethernet switches, OTN muxponders, and broadcast video infrastructure requiring stable component supply and long-term lifecycle assurance.

Supply support for SI5344A-B06214-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, with leadership in RF, timing, and precision analog ICs.

The Si5344 product line was designed specifically for high-performance timing in carrier-grade networking and data center infrastructure, emphasizing ultra-low jitter, SyncE compliance, and robust holdover performance under input failure conditions.

FAQ

What is the primary function of the SI5344A-B06214-GMR in a telecom timing system?

The SI5344A-B06214-GMR serves as a jitter-attenuating clock multiplier that cleans and regenerates timing signals from noisy or unstable network references. It locks to input clocks (e.g., from SyncE or PTP grandmasters), suppresses jitter using its DSPLL, and generates multiple low-jitter outputs for downstream ASICs, FPGAs, and SerDes. Its holdover capability maintains stable timing during input loss-ensuring continuous operation in carrier-class 10/40/100G line cards. The SI5344A-B06214-GMR is factory preprogrammed for immediate deployment without field configuration.

Does the SI5344A-B06214-GMR support Synchronous Ethernet (SyncE) compliance out of the box?

Yes, the SI5344A-B06214-GMR meets ITU-T G.8262 EEC Option 1 and Option 2 requirements for Enhanced Equipment Clocks. This compliance is achieved through its ultra-low 90 fs rms jitter, programmable DSPLL loop bandwidth (0.1 Hz–4 kHz), and robust holdover performance using historical frequency averaging. Because it is factory preprogrammed (B06214), the SI5344A-B06214-GMR delivers verified SyncE behavior without requiring user configuration-reducing qualification time for carrier equipment vendors.

How many clock inputs and outputs does the SI5344A-B06214-GMR support, and what interfaces are compatible?

The SI5344A-B06214-GMR supports four clock inputs (IN0–IN3) and four outputs (OUT0–OUT3). Inputs accept differential (LVDS/LVPECL/CML) or single-ended LVCMOS signals across 8 kHz–750 MHz (differential) or 8 kHz–250 MHz (LVCMOS). Outputs are fully programmable for LVDS, LVPECL, LVCMOS, CML, or HCSL signaling, with independent amplitude, common-mode voltage, and termination control per channel. This flexibility allows the SI5344A-B06214-GMR to interface directly with diverse PHYs, FPGAs, and network processors without level-shifting components.

What is the significance of the "B06214" suffix in SI5344A-B06214-GMR?

The "B06214" suffix identifies a factory preprogrammed configuration assigned by Skyworks, where the device ships with a specific, validated frequency plan stored in its non-volatile memory (NVM). This includes defined input selection priorities, output frequencies (e.g., 156.25 MHz, 312.5 MHz), signal formats, and operational modes-enabling immediate power-up functionality without host processor intervention. Unlike generic Si5344A-D-GM1 parts, the SI5344A-B06214-GMR guarantees timing behavior aligned to a known system requirement, reducing integration risk and accelerating time-to-market.

Can the SI5344A-B06214-GMR operate without an external crystal?

No-the SI5344A-B06214-GMR requires an external crystal connected to XA/XB pins (25–54 MHz fundamental-mode) to provide the reference for free-run and holdover modes. The internal oscillator uses this crystal to generate the ultra-low-jitter reference needed for DSPLL stability. While an external REFCLK can be substituted via register configuration, the SI5344A-B06214-GMR's factory programming assumes crystal-based operation optimized for jitter performance. For SyncE pizza-box applications requiring minimal wander, a TCXO is recommended-but the SI5344A-B06214-GMR itself still relies on XA/XB connection.

SI5344A-B06214-GMR Specifications

Product attributes: Attribute value

Manufacturer:: Skyworks Solutions Inc.

Series:: *

Package/Case:: -

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

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:: -

SI5344A-B06214-GMR FAQ

1.How can I place an order for SI5344A-B06214-GMR through Aetrix?

Please submit a Request for Quotation (RFQ) for SI5344A-B06214-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 SI5344A-B06214-GMR reliable?

The price and inventory of SI5344A-B06214-GMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI5344A-B06214-GMR is usually 5 days.

3.What payment methods are accepted for SI5344A-B06214-GMR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI5344A-B06214-GMR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SI5344A-B06214-GMR?

SI5344A-B06214-GMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SI5344A-B06214-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 SI5344A-B06214-GMR?

For technical support, including SI5344A-B06214-GMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI5344A-B06214-GMR requirements.

6.How does Aetrix verify that SI5344A-B06214-GMR is sourced from the original manufacturer or authorized distributors?

All SI5344A-B06214-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 SI5344A-B06214-GMR meets industry standards.

7.What is the process for return or replacement of SI5344A-B06214-GMR?

All SI5344A-B06214-GMR units undergo pre-shipment inspection (PSI). If there is an issue with SI5344A-B06214-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 SI5344A-B06214-GMR part is unused and in its original packaging.

Return procedure for SI5344A-B06214-GMR:

1.Submit a request within 90 days.

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

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