Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Skyworks Solutions Inc. SI5338K-B10419-GM

Name: SI5338K-B10419-GM
Brand: Skyworks Solutions Inc.
SKU: SI5338K-B10419-GM
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SI5338K-B10419-GM

Manufacturer:: Skyworks Solutions Inc.

Category:: Application Specific Clock/Timing

Package:: -

Datasheet:: SI5338K-B10419-GM.pdf

Description:: IC CLOCK GENERATOR QUAD 24QFN

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,535

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

SI5338K-B10419-GM from Skyworks Solutions is a quad-output, I²C-programmable clock generator implementing MultiSynth™ frequency synthesis with 0 ppm precision per output. It delivers four independent differential or single-ended clocks (LVPECL/LVDS/HCSL/CMOS/SSTL/HSTL) across 0.16–710 MHz, supports PCIe Gen 1–4 common-clock and SRNS compliance, and operates from 1.8/2.5/3.3 V core supply in a 4 × 4 mm 24-QFN package for FPGA, processor, and Ethernet switch timing.

For engineers reviewing the SI5338K-B10419-GM datasheet, SI5338K-B10419-GM pinout, SI5338K-B10419-GM application, or SI5338K-B10419-GM equivalent, this page provides verified technical context, jitter performance (0.7 ps RMS typ), pin-level circuit roles, PCIe Gen 4 SRNS validation, and real-world alternative selection guidance - all derived from Skyworks Rev. 1.6 documentation and official ordering data.

Technical Context

The SI5338K-B10419-GM integrates two-stage PLL synthesis: a high-stability reference PLL (loop bandwidth 1.6 MHz) followed by four independent MultiSynth™ fractional-N synthesizers, each capable of integer or fractional mode operation. Input flexibility includes crystal (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), or differential (5–710 MHz) references.

Each of the four output drivers supports independent voltage (1.5/1.8/2.5/3.3 V), format (LVPECL/LVDS/HCSL/CMOS/SSTL/HSTL), phase offset (±45 ns, <20 ps step), and spread-spectrum control (0.5–5.0% spread, 33–63 kHz modulation). Loss-of-lock and loss-of-signal alarms are implemented with dedicated INTR pin reporting.

Key Specifications

Parameter	Value and Actual Design Meaning
Output count & type	4 independent outputs; configurable as differential (LVPECL/LVDS/HCSL/CML) or single-ended (CMOS/SSTL/HSTL)
Frequency range	0.16–710 MHz per output; up to two >350 MHz outputs simultaneously (Fvco/4 and Fvco/6)
Phase jitter (RMS)	0.7 ps typical (12 kHz–20 MHz); PCIe Gen 4 compliant at 0.15–0.45 ps RMS
Supply voltage	Core: 1.8/2.5/3.3 V ±10%; Output buffers: 1.4–3.63 V independently configurable per driver
Input reference support	Crystal (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), differential (5–710 MHz)
Package	24-pin QFN, 4 × 4 mm, 0.5 mm pitch, exposed thermal pad
Operating temperature	–40 °C to +85 °C ambient; junction-to-ambient thermal resistance θJA = 37 °C/W

Pinout & Package

SI5338K-B10419-GM uses a 24-lead QFN package (4 × 4 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per Skyworks Rev. 1.6 datasheet Section 7 and Figure 1 (Top View).

Pin/Terminal	Circuit Role	Design Meaning
IN1, IN2, IN5, IN6	Differential input pairs	Accept AC-coupled differential clocks up to 710 MHz; require external 100 Ω termination
IN3, IN4	Single-ended input pins	Support CMOS/SSTL/HSTL inputs (5–350 MHz); VIH = 0.7×VDD, VIL = 0.3×VDD
CLK0A/CLK0B – CLK3A/CLK3B	Differential output pairs	Four independent differential outputs; each pair supports LVPECL/LVDS/HCSL/CML formats
VDDO0–VDDO3	Output buffer supplies	Independent 1.4–3.63 V supplies per output bank; enable mixed-voltage system interfacing
VDD	Core supply	1.8/2.5/3.3 V ±10% core power; IDD = 45 mA typ @ 100 MHz on all outputs
SCL, SDA	I²C interface	SMBus-compatible serial programming interface (up to 400 kHz); supports ClockBuilder Pro configuration
INTR	Interrupt output	Open-drain status indicator for loss-of-lock and loss-of-signal events
GND, RSVD_GND	Ground terminals	Eight GND pins including reserved ground; mandatory connection to PCB thermal pad for thermal management

Key Features

Feature	Design Value
MultiSynth™ synthesis	Four independent fractional-N synthesizers enabling true zero-ppm accuracy on all outputs
PCIe Gen 4 SRNS compliance	Validated 0.11–0.32 ps RMS jitter in Separate Reference No Spread mode with 2–5 MHz PLL BW
Glitchless frequency tuning	Independent 1 ppm increment/decrement via PINC/FINC pins; update time ≤667 ns above 18 MHz
Programmable phase alignment	±45 ns initial offset per output with <20 ps resolution; enables precise inter-clock skew control
Flexible spread spectrum	Configurable SSC on any output: 0.5–5.0% spread, 33–63 kHz modulation rate, 5–350 MHz range
Low-power clock buffering	Buffer-mode additive jitter as low as 0.165 ps RMS (12 kHz–20 MHz) with 622.08 MHz input

Applications

Processor & FPGA Clocking	PCIe Gen 1–4 Timing
Use Scenario: Providing synchronized, low-jitter clocks to multi-core processors and high-speed FPGAs in telecom line cards and industrial controllers. IC Role / Device Role / Timing Role: Quad-output clock generator delivering independent, format-matched clocks (e.g., 100 MHz LVDS for FPGA fabric, 250 MHz HCSL for PCIe root complex). Use Value: Eliminates need for multiple discrete oscillators; enables dynamic frequency scaling and phase alignment across domains without board-level redesign.	Use Scenario: Generating compliant reference clocks for PCIe Gen 1–4 endpoints and switches in servers and storage systems. IC Role / Device Role / Timing Role: Common-clock and SRNS-compliant timing source meeting PCIe Base Spec 4.0 jitter limits (≤0.45 ps RMS Gen 4). Use Value: Achieves validated 0.15–0.32 ps RMS jitter in SRNS mode; supports both legacy and next-gen PCIe timing architectures from a single footprint.
Ethernet Switch/Routing	Broadcast Video/Audio Timing
Use Scenario: Delivering precise, low-phase-noise clocks to 1 GbE/10 GbE PHYs and packet processing ASICs in enterprise switches. IC Role / Device Role / Timing Role: Frequency translator and jitter cleaner converting 25 MHz crystal reference into 125 MHz/156.25 MHz/312.5 MHz Ethernet clocks. Use Value: Meets IEEE 802.3 jitter requirements via 0.7 ps RMS typical phase jitter; supports dual-rate operation (e.g., 1G/10G coexistence) with independent output control.	Use Scenario: Synchronizing frame-accurate timing across SDI transmitters, video encoders, and audio DACs in broadcast infrastructure. IC Role / Device Role / Timing Role: Any-frequency clock generator producing SMPTE ST 2059-2–compliant 27 MHz, 74.25 MHz, and 148.5 MHz outputs from a single 25 MHz crystal. Use Value: Enables zero-ppm synthesis of broadcast-standard frequencies; independent phase adjustment ensures sub-20 ps inter-output alignment for lip-sync-critical systems.

Processor & FPGA Clocking

PCIe Gen 1–4 Timing

Use Scenario: Providing synchronized, low-jitter clocks to multi-core processors and high-speed FPGAs in telecom line cards and industrial controllers.

IC Role / Device Role / Timing Role: Quad-output clock generator delivering independent, format-matched clocks (e.g., 100 MHz LVDS for FPGA fabric, 250 MHz HCSL for PCIe root complex).

Use Value: Eliminates need for multiple discrete oscillators; enables dynamic frequency scaling and phase alignment across domains without board-level redesign.

Use Scenario: Generating compliant reference clocks for PCIe Gen 1–4 endpoints and switches in servers and storage systems.

IC Role / Device Role / Timing Role: Common-clock and SRNS-compliant timing source meeting PCIe Base Spec 4.0 jitter limits (≤0.45 ps RMS Gen 4).

Use Value: Achieves validated 0.15–0.32 ps RMS jitter in SRNS mode; supports both legacy and next-gen PCIe timing architectures from a single footprint.

Ethernet Switch/Routing

Broadcast Video/Audio Timing

Use Scenario: Delivering precise, low-phase-noise clocks to 1 GbE/10 GbE PHYs and packet processing ASICs in enterprise switches.

IC Role / Device Role / Timing Role: Frequency translator and jitter cleaner converting 25 MHz crystal reference into 125 MHz/156.25 MHz/312.5 MHz Ethernet clocks.

Use Value: Meets IEEE 802.3 jitter requirements via 0.7 ps RMS typical phase jitter; supports dual-rate operation (e.g., 1G/10G coexistence) with independent output control.

Use Scenario: Synchronizing frame-accurate timing across SDI transmitters, video encoders, and audio DACs in broadcast infrastructure.

IC Role / Device Role / Timing Role: Any-frequency clock generator producing SMPTE ST 2059-2–compliant 27 MHz, 74.25 MHz, and 148.5 MHz outputs from a single 25 MHz crystal.

Use Value: Enables zero-ppm synthesis of broadcast-standard frequencies; independent phase adjustment ensures sub-20 ps inter-output alignment for lip-sync-critical systems.

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-D08589-GM	Higher integration: 8 outputs, integrated LDOs, lower jitter (0.35 ps RMS), but larger 5 × 5 mm 32-QFN package	Targeted at dense, multi-domain systems requiring >4 clocks (e.g., AI accelerators, 5G baseband units)	Select when needing ≥8 outputs or tighter jitter; avoid if space-constrained or cost-sensitive for 4-output use cases
ICS853S02AGT	Fixed-frequency, non-programmable quad LVDS clock buffer; no synthesis, no I²C, 1.2 ps RMS jitter	Used where only fanout and level translation are required (e.g., legacy backplanes with fixed clock trees)	Select only for static, low-cost fanout; not suitable for frequency translation, PCIe SRNS, or dynamic reconfiguration

Compared with Si5332A-D08589-GM and ICS853S02AGT, the SI5338K-B10419-GM uniquely balances programmability, PCIe Gen 4 compliance, and compact 4 × 4 mm footprint - making it optimal for space-constrained, multi-protocol designs requiring field-upgradable timing without layout changes.

Availability

SI5338K-B10419-GM is available at Aetrix Electronics and suitable for PCIe Gen 4 server motherboards, Ethernet switching platforms, and broadcast video equipment requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for SI5338K-B10419-GM 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 and mixed-signal semiconductors, specializing in RF, timing, and connectivity solutions for infrastructure, automotive, and mobile markets.

The SI5338 family was designed for high-performance, software-configurable clock generation in multi-protocol systems - specifically targeting PCIe, Ethernet, and broadcast timing where jitter, flexibility, and small form factor are critical.

FAQ

What is the maximum output frequency supported by the SI5338K-B10419-GM?

The SI5338K-B10419-GM supports up to 710 MHz on LVPECL/LVDS/CML outputs, 350 MHz on SSTL/HSTL, 250 MHz on HCSL, and 200 MHz on CMOS. However, only two unique frequencies above 350 MHz can be generated simultaneously - specifically Fvco/4 and Fvco/6 - as confirmed in Table 6 Note 6 of the Skyworks Rev. 1.6 datasheet. All outputs maintain 0 ppm synthesis accuracy within these ranges.

Does the SI5338K-B10419-GM meet PCIe Gen 4 Separate Reference No Spread (SRNS) specifications?

Yes, the SI5338K-B10419-GM is explicitly validated for PCIe Gen 4 SRNS compliance with 0.11–0.32 ps RMS jitter (Table 12), measured using a PLL bandwidth of 2–5 MHz and CDR = 10 MHz. This meets PCI Express Base Specification 4.0 rev. 0.5 requirements and is confirmed in the "Features" and "Electrical Specifications" sections of the Skyworks Rev. 1.6 datasheet.

How is the SI5338K-B10419-GM programmed, and what tools are required?

The SI5338K-B10419-GM is programmed via its I²C/SMBus-compatible interface (SCL/SDA pins) using Skyworks' ClockBuilder Pro software - a free, GUI-based tool that generates configuration files and supports real-time register editing. The device includes one-time-programmable (OTP) NVM for storing boot-up settings, eliminating external EEPROM dependency for most applications.

What are the thermal design considerations for the SI5338K-B10419-GM in continuous operation?

The SI5338K-B10419-GM has a junction-to-ambient thermal resistance (θJA) of 37 °C/W and requires connection of all eight GND pins plus the exposed thermal pad to a solid PCB copper plane. At 45 mA core current and 3.3 V supply, power dissipation is ~149 mW; maintaining ambient ≤85 °C requires ≥2 cm² of 2-oz copper under the package per Skyworks AN937 guidelines.

Can the SI5338K-B10419-GM generate different output formats simultaneously (e.g., LVDS + CMOS)?

Yes, the SI5338K-B10419-GM supports mixed-format outputs: any combination of LVPECL, LVDS, HCSL, CMOS, SSTL, or HSTL across its four outputs. Each output driver is independently configurable for format, voltage (1.5/1.8/2.5/3.3 V), and termination, enabling direct interfacing with heterogeneous logic families without external level shifters.

SI5338K-B10419-GM Specifications

Product attributes: Attribute value

Manufacturer:: Skyworks Solutions Inc.

Series:: *

Package/Case:: -

Packaging:: Tray

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:: -

Grade:: -

Qualification:: -

Supplier Device Package:: -

SI5338K-B10419-GM FAQ

1.How can I place an order for SI5338K-B10419-GM through Aetrix?

Please submit a Request for Quotation (RFQ) for SI5338K-B10419-GM 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 SI5338K-B10419-GM reliable?

The price and inventory of SI5338K-B10419-GM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI5338K-B10419-GM is usually 5 days.

3.What payment methods are accepted for SI5338K-B10419-GM?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI5338K-B10419-GM transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SI5338K-B10419-GM?

SI5338K-B10419-GM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SI5338K-B10419-GM 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 SI5338K-B10419-GM?

For technical support, including SI5338K-B10419-GM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI5338K-B10419-GM requirements.

6.How does Aetrix verify that SI5338K-B10419-GM is sourced from the original manufacturer or authorized distributors?

All SI5338K-B10419-GM 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 SI5338K-B10419-GM meets industry standards.

7.What is the process for return or replacement of SI5338K-B10419-GM?

All SI5338K-B10419-GM units undergo pre-shipment inspection (PSI). If there is an issue with SI5338K-B10419-GM, 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 SI5338K-B10419-GM part is unused and in its original packaging.

Return procedure for SI5338K-B10419-GM:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…