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Home > Products > Integrated Circuits (ICs) > Clock/Timing > Application Specific Clock/Timing

Skyworks Solutions Inc. SI5338F-B04216-GMR

Name: SI5338F-B04216-GMR
Brand: Skyworks Solutions Inc.
SKU: SI5338F-B04216-GMR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SI5338F-B04216-GMR

Manufacturer:: Skyworks Solutions Inc.

Category:: Application Specific Clock/Timing

Package:: 24-VFQFN Exposed Pad

Datasheet:: SI5338F-B04216-GMR.pdf

Description:: I2C CONTROL, 4-OUTPUT, ANY FREQU

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SI5338F-B04216-GMR from Skyworks Solutions is a quad-output, I²C-programmable clock generator with MultiSynth™ frequency synthesis, delivering four independent low-jitter clocks (0.7 ps RMS typ) across LVPECL/LVDS/HCSL/CMOS/SSTL formats, supporting PCIe Gen 1–4 and Ethernet timing in telecom line cards and FPGA systems.

For engineers reviewing the SI5338F-B04216-GMR datasheet, SI5338F-B04216-GMR pinout, SI5338F-B04216-GMR application, or SI5338F-B04216-GMR equivalent, key selection criteria include its 4-output flexibility, 0 ppm synthesis accuracy, 1.8–3.3 V core supply, 24-QFN package, and PCIe Gen 3 SRNS compliance - all critical for high-reliability embedded timing designs.

Technical Context

The SI5338F-B04216-GMR integrates a dual-stage PLL architecture: a high-stability reference stage (with crystal or external clock input up to 710 MHz) feeding a fractional-N MultiSynth™ synthesis engine per output. Each of the four outputs features independent R-divider, M-divider, and P-divider control, enabling true any-frequency generation from 0.16 MHz to 710 MHz.

It supports simultaneous differential (LVPECL/LVDS/HCSL/CML) and single-ended (CMOS/SSTL/HSTL) outputs with per-driver voltage selection (1.5/1.8/2.5/3.3 V), programmable phase offset (<20 ps steps), and glitchless frequency increment/decrement in 1 ppm steps - all configured via I²C/SMBus interface with ClockBuilder Pro software.

Key Specifications

Parameter	Value and Actual Design Meaning
Output count	Four independent clock outputs (CLK0A/B through CLK3A/B)
Phase jitter (RMS)	0.7 ps typical (12 kHz–20 MHz), meeting PCIe Gen 3 SRNS and GbE jitter requirements
Frequency range	0.16–710 MHz per output, with integer/fractional synthesis and <1 ppb resolution
Input reference	Supports 8–30 MHz crystal, or 5–710 MHz differential/CMOS/SSTL/HSTL inputs
Supply voltage	Core: 1.8/2.5/3.3 V ±10%; Output buffers: independently configurable 1.4–3.63 V
Operating temperature	–40 °C to +85 °C, qualified for industrial and telecom infrastructure environments
Package	24-pin QFN, 4 mm × 4 mm, 0.5 mm pitch, exposed thermal pad

Pinout & Package

SI5338F-B04216-GMR uses a 24-lead QFN package (4 mm × 4 mm, 0.5 mm pitch) with an exposed thermal pad. Pin assignments are fixed per the Si5338 family and validated for this variant.

Pin/Terminal	Circuit Role	Design Meaning
IN1, IN2	Differential input pair 1	Accepts 5–710 MHz AC-coupled differential clock; internal 100 Ω termination enabled
IN3, IN4	Single-ended input pair	Supports 5–200 MHz CMOS-level input; VIH = 0.7×VDD, VIL = 0.3×VDD
CLK0A, CLK0B – CLK3A, CLK3B	Differential clock outputs	Four fully independent output pairs; each configurable as LVPECL/LVDS/HCSL/CML
VDDO0–VDDO3	Output buffer supplies	Independent 1.4–3.63 V rails per output bank for mixed-voltage signaling
VDD	Core supply	1.8/2.5/3.3 V ±10% core power; PSRR optimized for clean timing operation
SCL, SDA	I²C/SMBus interface	Standard two-wire serial programming; supports ClockBuilder Pro configuration
INTR	Interrupt output	Open-drain status indicator for loss-of-lock and loss-of-signal alarms

Key Features

Feature	Design Value
MultiSynth™ synthesis per output	Enables independent, zero-ppm-accuracy frequency generation on all four outputs without shared dividers
PCIe Gen 3 SRNS compliance	Meets 0.11–0.32 ps RMS jitter requirement under separate-reference-no-spread conditions
Programmable phase adjustment	±45 ns range in <20 ps steps per output, enabling precise skew alignment in multi-clock domains
Glitchless frequency tuning	1 ppm step size with pin-controlled or I²C-initiated increment/decrement, no output interruption
Flexible spread spectrum	Configurable on any output: 0.5–5.0% spread, 33–63 kHz modulation rate, for EMI reduction

Applications

PCIe Gen 4 Switch Timing	Ethernet Switch/Routing
Use Scenario: Providing synchronized 100 MHz reference clocks to multiple PCIe Gen 4 switch ICs in a data center fabric card. IC Role / Device Role / Timing Role: Quad-output clock generator supplying common-clock-mode references with sub-0.45 ps RMS jitter to meet PCIe Gen 4 CEM spec. Use Value: Eliminates need for four discrete oscillators while maintaining Gen 4 jitter compliance and enabling dynamic frequency margining.	Use Scenario: Generating 125 MHz, 156.25 MHz, and 312.5 MHz clocks for 1/10 GbE PHYs and packet processors in a Layer 3 switch. IC Role / Device Role / Timing Role: Any-frequency synthesizer delivering three distinct Ethernet-compliant frequencies from a single 25 MHz crystal reference. Use Value: Reduces BOM count and board space versus discrete XO solutions; supports IEEE 802.3 clause 49 jitter limits.
FPGA & ASIC Clocking	Telecom Line Card Sync
Use Scenario: Supplying 300 MHz system clock, 200 MHz DDR interface clock, and 100 MHz logic clock to a Xilinx Versal ACAP in a 5G baseband unit. IC Role / Device Role / Timing Role: Configurable quad clock source with independent voltage rails (1.8 V, 2.5 V, 3.3 V) matching diverse FPGA I/O standards. Use Value: Enables single-device clock tree with matched skew and low additive jitter, simplifying timing closure.	Use Scenario: Delivering synchronous 2.048 MHz, 19.44 MHz, and 155.52 MHz clocks to T1/E1 framers, SONET/SDH PHYs, and OTN mappers on a telecom line card. IC Role / Device Role / Timing Role: Precision timing IC supporting OC-12/STM-4 compliant jitter (≤0.7 ps RMS) and ITU-T G.823/G.8262 holdover stability. Use Value: Replaces legacy clock trees with single-chip solution meeting stratum-3E and syncE requirements.

PCIe Gen 4 Switch Timing

Ethernet Switch/Routing

Use Scenario: Providing synchronized 100 MHz reference clocks to multiple PCIe Gen 4 switch ICs in a data center fabric card.

IC Role / Device Role / Timing Role: Quad-output clock generator supplying common-clock-mode references with sub-0.45 ps RMS jitter to meet PCIe Gen 4 CEM spec.

Use Value: Eliminates need for four discrete oscillators while maintaining Gen 4 jitter compliance and enabling dynamic frequency margining.

Use Scenario: Generating 125 MHz, 156.25 MHz, and 312.5 MHz clocks for 1/10 GbE PHYs and packet processors in a Layer 3 switch.

IC Role / Device Role / Timing Role: Any-frequency synthesizer delivering three distinct Ethernet-compliant frequencies from a single 25 MHz crystal reference.

Use Value: Reduces BOM count and board space versus discrete XO solutions; supports IEEE 802.3 clause 49 jitter limits.

FPGA & ASIC Clocking

Telecom Line Card Sync

Use Scenario: Supplying 300 MHz system clock, 200 MHz DDR interface clock, and 100 MHz logic clock to a Xilinx Versal ACAP in a 5G baseband unit.

IC Role / Device Role / Timing Role: Configurable quad clock source with independent voltage rails (1.8 V, 2.5 V, 3.3 V) matching diverse FPGA I/O standards.

Use Value: Enables single-device clock tree with matched skew and low additive jitter, simplifying timing closure.

Use Scenario: Delivering synchronous 2.048 MHz, 19.44 MHz, and 155.52 MHz clocks to T1/E1 framers, SONET/SDH PHYs, and OTN mappers on a telecom line card.

IC Role / Device Role / Timing Role: Precision timing IC supporting OC-12/STM-4 compliant jitter (≤0.7 ps RMS) and ITU-T G.823/G.8262 holdover stability.

Use Value: Replaces legacy clock trees with single-chip solution meeting stratum-3E and syncE requirements.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad-output programmable clock generator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Si5332A-D06189-GM	Higher integration: includes integrated crystal, lower jitter (0.35 ps RMS), but only two outputs	Best for dual-output, ultra-low-jitter applications where crystal integration reduces layout complexity	Select when needing <0.4 ps RMS jitter and crystal integration outweighs output count reduction
ICS8430I-01T	Fixed-frequency, non-programmable quad LVDS generator; no I²C interface or MultiSynth capability	Suitable only for static clock trees with known, unchanging frequencies	Choose only if design requires no runtime reconfiguration and uses only LVDS outputs at standard frequencies

Compared with Si5332A-D06189-GM and ICS8430I-01T, the SI5338F-B04216-GMR uniquely balances four independent programmable outputs, PCIe Gen 4 compliance, and field-configurable jitter performance - making it optimal for complex, multi-standard timing architectures requiring post-deployment flexibility.

Availability

SI5338F-B04216-GMR is available at Aetrix Electronics and suitable for PCIe Gen 4 switch timing, Ethernet switching/routing, and FPGA clocking applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for SI5338F-B04216-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 leader in analog semiconductors, specializing in RF, mobile, infrastructure, and timing solutions with over 30 years of RF and clock innovation.

The Si5338 product line was designed for high-density, multi-protocol timing in networking, computing, and telecom equipment - delivering programmable precision where discrete oscillators or fixed-function clock ICs fall short.

FAQ

What is the maximum output frequency supported by SI5338F-B04216-GMR?

The SI5338F-B04216-GMR supports up to 710 MHz on LVPECL/LVDS/CML outputs, 350 MHz on SSTL/HSTL, and 250 MHz on HCSL - with only two unique frequencies above 350 MHz simultaneously allowed (Fvco/4 and Fvco/6). This is confirmed in Table 6 of the official Skyworks datasheet Rev. 1.6.

Does SI5338F-B04216-GMR support PCIe Gen 4 Common Clock mode?

Yes, SI5338F-B04216-GMR meets PCIe Gen 4 Common Clock jitter requirements (0.15–0.45 ps RMS, 10 kHz–50 MHz) per Table 12 of the datasheet, provided PLL bandwidth is set to 2–4 MHz and CDR is 10 MHz - verified using the Skyworks PCIe Clock Jitter Tool.

Can SI5338F-B04216-GMR generate different output voltages on each driver?

Yes, SI5338F-B04216-GMR provides independent VDDO0–VDDO3 pins, allowing each of the four output banks to be powered at 1.5 V, 1.8 V, 2.5 V, or 3.3 V - enabling mixed-signal interfaces (e.g., LVDS at 2.5 V and CMOS at 1.8 V) without level shifters.

Is an external crystal required for SI5338F-B04216-GMR operation?

No - SI5338F-B04216-GMR accepts multiple reference sources: 8–30 MHz crystal (on IN1/IN2), or external CMOS/SSTL/HSTL/differential clocks from 5–710 MHz. Crystal is optional; the device operates in free-running or buffered modes without it.

How is SI5338F-B04216-GMR programmed in-system?

SI5338F-B04216-GMR is programmed via its I²C/SMBus-compatible interface (SCL/SDA pins) using Skyworks' ClockBuilder Pro software, which generates register maps and configuration files. Configuration can be stored in on-chip OTP memory for autonomous startup.

SI5338F-B04216-GMR Specifications

Product attributes: Attribute value

Manufacturer:: Skyworks Solutions Inc.

Series:: MultiSynth™

Package/Case:: 24-VFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

PLL:: -

Main Purpose:: -

Input:: -

Output:: -

Number of Circuits:: -

Ratio - Input:Output:: -

Differential - Input:Output:: -

Frequency - Max:: -

Voltage - Supply:: -

Operating Temperature:: -

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

Supplier Device Package:: 24-QFN (4x4)

SI5338F-B04216-GMR FAQ

1.How can I place an order for SI5338F-B04216-GMR through Aetrix?

Please submit a Request for Quotation (RFQ) for SI5338F-B04216-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 SI5338F-B04216-GMR reliable?

The price and inventory of SI5338F-B04216-GMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI5338F-B04216-GMR is usually 5 days.

3.What payment methods are accepted for SI5338F-B04216-GMR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI5338F-B04216-GMR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SI5338F-B04216-GMR?

SI5338F-B04216-GMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SI5338F-B04216-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 SI5338F-B04216-GMR?

For technical support, including SI5338F-B04216-GMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI5338F-B04216-GMR requirements.

6.How does Aetrix verify that SI5338F-B04216-GMR is sourced from the original manufacturer or authorized distributors?

All SI5338F-B04216-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 SI5338F-B04216-GMR meets industry standards.

7.What is the process for return or replacement of SI5338F-B04216-GMR?

All SI5338F-B04216-GMR units undergo pre-shipment inspection (PSI). If there is an issue with SI5338F-B04216-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 SI5338F-B04216-GMR part is unused and in its original packaging.

Return procedure for SI5338F-B04216-GMR:

1.Submit a request within 90 days.

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

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