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Skyworks Solutions Inc. SI5342D-B04814-GMR
- Part No.:
- SI5342D-B04814-GMR
- Manufacturer:
- Skyworks Solutions Inc.
- Package:
- -
- Datasheet:
-
SI5342D-B04814-GMR.pdf
- Description:
- IC CLK MULTIPLIER ATTENUATOR
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Product details
Overview
SI5342D-B04814-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-B04814-GMR datasheet, SI5342D-B04814-GMR pinout, SI5342D-B04814-GMR application, or SI5342D-B04814-GMR equivalent, key selection considerations include its 2-output configuration, 350 MHz max output frequency limit (D-grade), factory-programmed 48 MHz crystal reference, differential input support up to 750 MHz, and integrated loop filter eliminating external components.
Technical Context
The SI5342D-B04814-GMR implements a fourth-generation DSPLL with digitally programmable loop bandwidth (0.1 Hz–4 kHz) for application-specific jitter filtering, paired with MultiSynth fractional-N synthesis enabling any-frequency output generation from any valid input. Its architecture supports hitless, glitchless, and ramped input switching between four clock sources.
It integrates on-chip oscillator circuitry with internal crystal load capacitors optimized for a 48 MHz fundamental-mode crystal, supports free-run, locked, and holdover modes, and features status monitoring (LOS/OOF/LOL) plus I²C/SPI control with in-circuit programmable OTP NVM for power-up configuration retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output count | 2 independent programmable clock outputs |
| Max output frequency | 350 MHz - defines upper limit for D-grade variant; enables 10G/40G Ethernet timing |
| Jitter (RMS) | 90 fs - measured at 12 kHz–20 MHz offset; meets SyncE EEC Option 1/2 requirements |
| Jitter attenuation BW | 0.1 Hz to 4 kHz - digitally selectable; determines input jitter suppression profile |
| Input frequency range | Differential: 8 kHz–750 MHz; LVCMOS: 8 kHz–250 MHz - supports wide-range network sync sources |
| Crystal reference | 48 MHz - factory-programmed fundamental-mode XTAL; enables low-jitter freerun/holdover |
| Supply voltages | VDD = 1.8 V ±5%; VDDA = 3.3 V ±5% - dual-rail operation with independent output supply pins |
Pinout & Package
The SI5342D-B04814-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 | Differential or LVCMOS clock inputs | Four selectable reference inputs; IN3 serves as FB_IN in zero-delay mode |
| OUT0, OUT1 | Differential/LVCMOS clock outputs | Two fully configurable outputs supporting LVDS/LVPECL/CML/HCSL/LVCMOS |
| XA/XB | Crytal oscillator terminals | Connects to 48 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 |
| INTRb | Interrupt output | Open-drain flag indicating LOS/OOF/LOL events; enables real-time fault monitoring |
Key Features
| Feature | Design Value |
|---|---|
| Factory preprogrammed 48 MHz crystal reference | Enables immediate low-jitter operation without external XTAL selection or layout tuning |
| Programmable jitter attenuation bandwidth | 0.1 Hz–4 kHz digital selection allows optimization for wander vs. jitter trade-offs in SyncE systems |
| Hitless input switching | Eliminates phase transients when switching between fractionally related clocks (e.g., 155.52 MHz ↔ 622.08 MHz) |
| Holdover with programmable history window | Up to 120 s of stored frequency history enables stable output during extended input loss |
| Zero-delay mode support | Configures IN3 as feedback input to align output phase with selected input-critical for deterministic latency paths |
Applications
| OTN Transponders | Carrier Ethernet Switches |
|---|---|
Use Scenario: Timing recovery and jitter cleanup for 100G/400G OTN client-side interfaces with asynchronous mapping. IC Role / Device Role / Timing Role: Jitter attenuator and clock multiplier generating clean 156.25 MHz and 311.04 MHz outputs from recovered OTU frame clocks. Use Value: Reduces accumulated jitter below ITU-T G.709 limits while enabling multi-rate output synthesis from a single input source. | Use Scenario: Synchronous Ethernet distribution across multi-shelf switch fabrics requiring EEC-compliant timing. IC Role / Device Role / Timing Role: Primary timing engine providing two independent G.8262-compliant outputs for line and system timing domains. Use Value: Meets EEC Option 1/2 wander and jitter specs without external loop filters or discrete PLL components. |
| Broadcast Video Infrastructure | Test & Measurement Equipment |
Use Scenario: Genlock and frame synchronization across SDI routers, converters, and IP video gateways operating at 27 MHz, 74.25 MHz, and 148.5 MHz. IC Role / Device Role / Timing Role: Any-frequency clock generator synthesizing exact SMPTE ST 2082/2081 rates from GPSDO or atomic references. Use Value: Eliminates need for multiple fixed-frequency oscillators; supports seamless format switching via software reconfiguration. | Use Scenario: Reference clock conditioning in high-precision signal analyzers and bit error rate testers requiring ultra-low phase noise. IC Role / Device Role / Timing Role: Jitter attenuator cleaning 10 MHz OCXO references before distribution to ADC/DAC sampling clocks. Use Value: Achieves 90 fs RMS jitter floor-enabling <−160 dBc/Hz phase noise performance at 100 kHz offset. |
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 |
|---|---|---|---|
| Si5342C-D-GM1 | Same 4-in/2-out QFN-44 package but supports full 1028 MHz output range using integer-only synthesis | Preferred for applications requiring >350 MHz outputs (e.g., 644.53 MHz CPRI) without fractional jitter penalty | Select when higher-frequency integer synthesis is needed and 90 fs jitter remains acceptable |
| LMK04832ISQE/NOPB | 2-input/14-output, dual-loop jitter cleaner with integrated LDOs; 85 fs RMS jitter; requires external loop filter | Better suited for multi-ASIC timing distribution with independent voltage rails and higher channel count | Choose when system demands >2 outputs, integrated power regulation, or tighter jitter spec (<85 fs) |
Compared with SI5342C-D-GM1, the SI5342D-B04814-GMR trades maximum output frequency for guaranteed low-jitter performance within the 350 MHz band and factory-optimized 48 MHz crystal configuration; versus LMK04832, it offers smaller footprint and integrated loop filter at the cost of output count and power integration.
Availability
SI5342D-B04814-GMR is available at Aetrix Electronics and suitable for carrier Ethernet switches, OTN transponders, broadcast video infrastructure, and test & measurement equipment requiring stable component supply, long-term lifecycle assurance, and factory-trimmed timing performance.
Supply support for SI5342D-B04814-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 wireless, broadband, automotive, and industrial markets.
The SI5342D-B04814-GMR belongs to Skyworks' Si534x family of jitter-attenuating clock multipliers, engineered specifically for ITU-T G.8262-compliant Synchronous Ethernet and OTN infrastructure where ultra-low jitter, holdover stability, and flexible frequency synthesis are mandatory.
FAQ
What is the maximum output frequency supported by the SI5342D-B04814-GMR?
The SI5342D-B04814-GMR is a D-grade device with a maximum output frequency of 350 MHz. This limit is specified in Skyworks' Si5345/44/42 Rev D Ordering Guide and applies to all output formats (LVDS, LVPECL, CML, HCSL, LVCMOS). It is optimized for applications such as 10G/40G Ethernet, SyncE line cards, and broadcast video where frequencies ≤350 MHz dominate. Exceeding this limit may result in degraded jitter or signal integrity.
Does the SI5342D-B04814-GMR require an external crystal, and what frequency is used?
No, the SI5342D-B04814-GMR does not require an external crystal-it is factory preprogrammed with a 48 MHz fundamental-mode crystal reference connected to XA/XB pins. Skyworks' datasheet confirms internal load capacitors eliminate need for external components. This 48 MHz reference enables optimal jitter performance and stable freerun/holdover operation per Si5342 Rev D specifications.
How many clock inputs and outputs does the SI5342D-B04814-GMR support?
The SI5342D-B04814-GMR supports four clock inputs (IN0–IN3) and two clock outputs (OUT0, OUT1), consistent with the Si5342 product definition in the Skyworks Si5345/44/42 Rev D Data Sheet. Input signals may be differential (LVDS/LVPECL/CML) or single-ended LVCMOS; outputs are programmable across LVDS, LVPECL, CML, HCSL, and LVCMOS standards with independent amplitude and common-mode control.
Is the SI5342D-B04814-GMR compliant with ITU-T G.8262 Synchronous Ethernet standards?
Yes, the SI5342D-B04814-GMR meets ITU-T G.8262 EEC Option 1 and Option 2 requirements for Enhanced Primary Reference Clocks. This compliance is explicitly stated in the "Features List" and "Applications" sections of the Si5345/44/42 Rev D Data Sheet and validated through Skyworks' characterization data for 90 fs RMS jitter and programmable loop bandwidth down to 0.1 Hz.
What communication interface does the SI5342D-B04814-GMR use for configuration?
The SI5342D-B04814-GMR supports both I²C and SPI serial interfaces for register configuration, status monitoring, and NVM programming. Pin-strapping (via SCLK/SDIO/SCL/SDA) determines active interface mode. Configuration is simplified using Skyworks' ClockBuilder Pro™ software, which generates register maps and validates frequency plans against hardware constraints of the SI5342D-B04814-GMR.
SI5342D-B04814-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-B04814-GMR FAQ
1.How can I place an order for SI5342D-B04814-GMR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI5342D-B04814-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-B04814-GMR reliable?
The price and inventory of SI5342D-B04814-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-B04814-GMR is usually 5 days.
3.What payment methods are accepted for SI5342D-B04814-GMR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI5342D-B04814-GMR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI5342D-B04814-GMR?
SI5342D-B04814-GMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI5342D-B04814-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-B04814-GMR?
For technical support, including SI5342D-B04814-GMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI5342D-B04814-GMR requirements.
6.How does Aetrix verify that SI5342D-B04814-GMR is sourced from the original manufacturer or authorized distributors?
All SI5342D-B04814-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-B04814-GMR meets industry standards.
7.What is the process for return or replacement of SI5342D-B04814-GMR?
All SI5342D-B04814-GMR units undergo pre-shipment inspection (PSI). If there is an issue with SI5342D-B04814-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-B04814-GMR part is unused and in its original packaging.
Return procedure for SI5342D-B04814-GMR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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