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. SI5338A-B05430-GMR

Name: SI5338A-B05430-GMR
Brand: Skyworks Solutions Inc.
SKU: SI5338A-B05430-GMR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SI5338A-B05430-GMR

Manufacturer:: Skyworks Solutions Inc.

Category:: Application Specific Clock/Timing

Package:: 24-VFQFN Exposed Pad

Datasheet:: SI5338A-B05430-GMR.pdf

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

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,649

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

Product details

Overview

SI5338A-B05430-GMR from Skyworks Solutions is an I²C-programmable quad clock generator with four independently configurable differential or single-ended outputs, 0.7 ps RMS typical phase jitter, PCIe Gen 1–4 and SRNS compliance, and operation from 1.8/2.5/3.3 V core supply in a 4 × 4 mm 24-QFN package. It replaces up to four crystal oscillators in Ethernet switch/router, FPGA clocking, and broadcast video timing systems.

For engineers reviewing the SI5338A-B05430-GMR datasheet, SI5338A-B05430-GMR pinout, SI5338A-B05430-GMR application, or SI5338A-B05430-GMR equivalent, key selection criteria include output format flexibility (LVPECL/LVDS/HCSL/CMOS/SSTL), independent per-output voltage control (1.5–3.3 V), any-frequency synthesis resolution (1 ppb), spread-spectrum capability (0.5–5.0% down-spread), and PCIe Gen 4 common-clock jitter compliance (0.15–0.45 ps RMS).

Technical Context

The SI5338A-B05430-GMR implements a two-stage PLL architecture: a high-stability reference stage (input frequency 5–710 MHz) followed by four independent MultiSynth™ fractional-N synthesizers, each driving one output channel. Each synthesizer supports integer or fractional mode operation with programmable initial phase offset (±45 ns) and glitchless frequency increment/decrement in 1 ppm steps.

It features flexible input support-including external crystal (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential (5–710 MHz)-and output driver independence: voltage (1.5/1.8/2.5/3.3 V), format (LVPECL/LVDS/HCSL/CMOS/SSTL), and spread-spectrum parameters (modulation rate 33–63 kHz, spread 0.5–5.0%) are set per channel without cross-channel coupling.

Key Specifications

Parameter	Value and Actual Design Meaning
Phase Jitter (RMS)	0.7 ps typical (12 kHz–20 MHz); meets PCIe Gen 4 common-clock jitter spec (≤0.45 ps RMS).
Output Count & Type	Four independent outputs: configurable as differential (LVPECL/LVDS/HCSL/CML) or single-ended (CMOS/SSTL/HSTL).
Frequency Range	0.16–710 MHz per output; supports >350 MHz on up to two outputs simultaneously (Fvco/4 and Fvco/6).
Synthesis Resolution	1 ppb; enables true zero-ppm accuracy across all outputs via fractional-N MultiSynth™.
Supply Voltages	Core: 1.8/2.5/3.3 V (±10%); output buffers: independently selectable 1.5/1.8/2.5/3.3 V per driver.
Package	24-pin QFN, 4 × 4 mm, 0.5 mm pitch; RoHS-compliant, moisture-sensitive level 3.
Operating Temp	–40 °C to +85 °C ambient; qualified for industrial and telecom line card environments.

Pinout & Package

SI5338A-B05430-GMR is housed in a 24-lead, 4 × 4 mm QFN package with exposed thermal pad. Pin assignments follow the standard Si5338 top-view layout: IN1/IN2 (differential ref 1), IN3/IN4 (single-ended ref), IN5/IN6 (differential ref 2), CLK0A/CLK0B through CLK3A/CLK3B (four differential output pairs), VDDO0–VDDO3 (independent output supply pins), VDD (core supply), SCL/SDA (I²C interface), INTR (interrupt output), and RSVD_GND (reserved ground).

Pin/Terminal	Circuit Role	Design Meaning
CLK0A / CLK0B	Differential Output Pair 0	LVPECL/LVDS/HCSL/CML-capable; independently configured frequency, format, voltage, and spread-spectrum.
CLK1A / CLK1B	Differential Output Pair 1	Same configurability as CLK0; supports integer/fractional synthesis and ±45 ns phase adjustment.
CLK2A / CLK2B	Differential Output Pair 2	Independent MultiSynth™ channel; supports up to 710 MHz (LVPECL) or 250 MHz (HCSL).
CLK3A / CLK3B	Differential Output Pair 3	Fourth fully independent output; enables multi-domain clocking (e.g., PCIe + Ethernet + video + processor clocks).
VDDO0–VDDO3	Output Buffer Supplies	Each powers one output pair; allows mixed-voltage operation (e.g., 1.8 V LVDS + 3.3 V CMOS on same device).
SCL / SDA	I²C Interface	Standard SMBus-compatible 2-wire bus; supports ClockBuilder Pro programming and runtime reconfiguration.
INTR	Interrupt Output	Open-drain status signal indicating loss-of-lock or loss-of-signal events; simplifies system monitoring.
IN1/IN2, IN5/IN6	Differential Reference Inputs	Accept 5–710 MHz AC-coupled differential clocks; internal 10 kΩ termination and 3.5 pF capacitance.
IN3 / IN4	Single-Ended Reference Inputs	Support CMOS/SSTL/HSTL inputs (5–350 MHz); 20 kΩ input resistance, 4 pF capacitance.

Key Features

Feature	Design Value
MultiSynth™ Any-Frequency Synthesis	Four independent fractional-N synthesizers deliver 0.16–710 MHz outputs with 1 ppb resolution and zero ppm error.
PCIe Gen 4 Common Clock Compliance	0.15–0.45 ps RMS jitter (10 kHz–50 MHz) meets PCIe Base Spec 4.0 rev 0.5 requirements for common-clock topology.
Per-Output Spread Spectrum	Configurable down-spread (0.5–5.0%) and modulation rate (33–63 kHz) on any output to reduce EMI without affecting other channels.
Glitchless Frequency Adjustment	Pin-controlled or I²C-initiated frequency increment/decrement in 1 ppm steps with no output interruption.
Programmable Phase Offset	±45 ns fine phase tuning per output in <20 ps steps-critical for skew-sensitive SerDes alignment.
External Feedback Mode	Enables zero-delay buffer operation by routing an output back to the feedback path, eliminating propagation delay.

Applications

Ethernet Switch/Router Timing	PCIe Gen 1–4 Clocking
Use Scenario: Synchronizing 10 GbE PHYs, packet processors, and switching fabric in Layer 3 routers with low-latency, low-jitter clock distribution. IC Role / Device Role / Timing Role: Quad-output clock generator providing independent 156.25 MHz (10GbE), 125 MHz (PCIe), 100 MHz (CPU), and 25 MHz (management) clocks from a single 25 MHz crystal. Use Value: Eliminates four discrete oscillators, reduces board area by >60%, and ensures sub-100 ps inter-output skew for deterministic packet forwarding.	Use Scenario: Delivering compliant reference clocks to multiple PCIe slots (Gen 1/2/3/4) and root complexes in server motherboards and accelerator cards. IC Role / Device Role / Timing Role: PCIe common-clock generator with SRNS support, supplying 100 MHz HCSL clocks meeting Gen 4 TJ < 33 ps pk-pk and RMS jitter ≤0.45 ps. Use Value: Enables simultaneous multi-lane PCIe operation with guaranteed jitter margin, avoiding costly re-spins due to clock-related link training failures.
Broadcast Video/Audio Sync	FPGA & Processor Clocking
Use Scenario: Generating frame-synchronized clocks (e.g., 27 MHz, 74.25 MHz, 148.5 MHz) for SDI transceivers, video encoders, and audio DACs in broadcast production equipment. IC Role / Device Role / Timing Role: Any-frequency clock synthesizer producing SMPTE-compliant frequencies with <1 ps RMS jitter to prevent video artifacts and audio clicks. Use Value: Replaces crystal-based solutions requiring manual trimming; achieves frame-accurate genlock across multiple video paths without external PLLs.	Use Scenario: Providing configurable clocks to heterogeneous SoCs (ARM Cortex-A, RISC-V), FPGAs (Xilinx Versal, Intel Agilex), and DDR memory controllers in edge AI inference platforms. IC Role / Device Role / Timing Role: Flexible clock source delivering 500 MHz (FPGA logic), 300 MHz (DDR4 PHY), 1 GHz (processor core), and 25 MHz (watchdog) from one device. Use Value: Simplifies power domain sequencing and enables dynamic frequency scaling via I²C, reducing firmware complexity and BOM count.

Ethernet Switch/Router Timing

PCIe Gen 1–4 Clocking

Use Scenario: Synchronizing 10 GbE PHYs, packet processors, and switching fabric in Layer 3 routers with low-latency, low-jitter clock distribution.

IC Role / Device Role / Timing Role: Quad-output clock generator providing independent 156.25 MHz (10GbE), 125 MHz (PCIe), 100 MHz (CPU), and 25 MHz (management) clocks from a single 25 MHz crystal.

Use Value: Eliminates four discrete oscillators, reduces board area by >60%, and ensures sub-100 ps inter-output skew for deterministic packet forwarding.

Use Scenario: Delivering compliant reference clocks to multiple PCIe slots (Gen 1/2/3/4) and root complexes in server motherboards and accelerator cards.

IC Role / Device Role / Timing Role: PCIe common-clock generator with SRNS support, supplying 100 MHz HCSL clocks meeting Gen 4 TJ < 33 ps pk-pk and RMS jitter ≤0.45 ps.

Use Value: Enables simultaneous multi-lane PCIe operation with guaranteed jitter margin, avoiding costly re-spins due to clock-related link training failures.

Broadcast Video/Audio Sync

FPGA & Processor Clocking

Use Scenario: Generating frame-synchronized clocks (e.g., 27 MHz, 74.25 MHz, 148.5 MHz) for SDI transceivers, video encoders, and audio DACs in broadcast production equipment.

IC Role / Device Role / Timing Role: Any-frequency clock synthesizer producing SMPTE-compliant frequencies with <1 ps RMS jitter to prevent video artifacts and audio clicks.

Use Value: Replaces crystal-based solutions requiring manual trimming; achieves frame-accurate genlock across multiple video paths without external PLLs.

Use Scenario: Providing configurable clocks to heterogeneous SoCs (ARM Cortex-A, RISC-V), FPGAs (Xilinx Versal, Intel Agilex), and DDR memory controllers in edge AI inference platforms.

IC Role / Device Role / Timing Role: Flexible clock source delivering 500 MHz (FPGA logic), 300 MHz (DDR4 PHY), 1 GHz (processor core), and 25 MHz (watchdog) from one device.

Use Value: Simplifies power domain sequencing and enables dynamic frequency scaling via I²C, reducing firmware complexity and BOM count.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Si5332A-D05430-GM	Higher integration: includes integrated LDOs, lower jitter (0.35 ps RMS), supports up to 10 outputs, but larger 5 × 5 mm 32-QFN package.	Targeted at high-density, ultra-low-jitter systems (e.g., 5G baseband, optical transport) where power-supply noise immunity and sub-0.4 ps jitter are mandatory.	Select Si5332A-D05430-GM only if jitter <0.4 ps RMS and integrated LDOs are required; otherwise, SI5338A-B05430-GMR offers better cost and footprint efficiency.
ICS843002AGI-01LFT	Fixed-frequency quad LVDS generator (no I²C programmability); 1.2 ps RMS jitter; 3.3 V only; 32-TQFP package.	Suitable for legacy designs with static clock trees and no need for field reconfiguration or multi-voltage outputs.	Choose ICS843002AGI-01LFT only for cost-sensitive, non-reprogrammable applications where pin count and package size are secondary to unit price.

Compared with Si5332A-D05430-GM and ICS843002AGI-01LFT, SI5338A-B05430-GMR uniquely balances programmability, jitter performance (0.7 ps RMS), mixed-voltage outputs, and compact 4 × 4 mm footprint-making it optimal for space-constrained, multi-standard systems requiring post-silicon clock tuning.

Availability

SI5338A-B05430-GMR is available at Aetrix Electronics and suitable for Ethernet switch/router timing, PCIe Gen 1–4 clocking, and broadcast video/audio synchronization requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for SI5338A-B05430-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 Si5338 product line was designed to replace multiple fixed-frequency oscillators with a single programmable clock generator for high-speed digital systems requiring precise, flexible, and low-jitter timing-targeting networking, data center, and broadcast infrastructure.

FAQ

What is the maximum output frequency supported by SI5338A-B05430-GMR in LVPECL format?

The SI5338A-B05430-GMR supports up to 710 MHz on LVPECL outputs when operating in integer synthesis mode. This capability is confirmed in Table 6 of the datasheet, which specifies LVPECL frequency range as 0.16–710 MHz. Note that above 350 MHz, only two unique frequencies can be generated simultaneously (Fvco/4 and Fvco/6), and proper VCO calibration is required per Skyworks AN360 guidelines.

Does SI5338A-B05430-GMR support PCIe Gen 4 Separate Reference No Spread (SRNS) mode?

Yes, SI5338A-B05430-GMR supports PCIe Gen 4 SRNS mode with 0.11–0.32 ps RMS jitter (typical 0.11 ps) when configured with PLL bandwidth of 2–4 MHz and CDR = 10 MHz, as specified in Table 12. This compliance is explicitly stated in the Features section and validated using the Skyworks PCIe Clock Jitter Tool per AN562 methodology.

Can SI5338A-B05430-GMR generate different output voltages on its four channels simultaneously?

Yes, SI5338A-B05430-GMR supports independent output supply voltages per channel: VDDO0, VDDO1, VDDO2, and VDDO3 accept 1.5 V, 1.8 V, 2.5 V, or 3.3 V independently. This allows concurrent LVDS (1.8 V), HCSL (2.5 V), CMOS (3.3 V), and SSTL (1.5 V) outputs without level-shifting components, as defined in Table 1 and Section 3.4 of the datasheet.

How is SI5338A-B05430-GMR programmed, and what software is required?

SI5338A-B05430-GMR is programmed via its I²C/SMBus-compatible interface using Skyworks' ClockBuilder Pro software, which provides GUI-based configuration, real-time jitter analysis, and .c file generation for embedded initialization. The software is freely downloadable from skyworksinc.com and supports full register-level access, custom profile storage, and PCIe jitter compliance validation for SI5338A-B05430-GMR.

What is the thermal resistance (θJA) of SI5338A-B05430-GMR in still air?

The junction-to-ambient thermal resistance (θJA) of SI5338A-B05430-GMR is 37 °C/W under still-air conditions, as specified in Table 4 of the datasheet. This value assumes standard PCB layout with the exposed thermal pad soldered to a solid copper plane; actual thermal performance improves with enhanced heatsinking or forced airflow.

SI5338A-B05430-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)

SI5338A-B05430-GMR FAQ

1.How can I place an order for SI5338A-B05430-GMR through Aetrix?

Please submit a Request for Quotation (RFQ) for SI5338A-B05430-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 SI5338A-B05430-GMR reliable?

The price and inventory of SI5338A-B05430-GMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI5338A-B05430-GMR is usually 5 days.

3.What payment methods are accepted for SI5338A-B05430-GMR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI5338A-B05430-GMR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SI5338A-B05430-GMR?

SI5338A-B05430-GMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SI5338A-B05430-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 SI5338A-B05430-GMR?

For technical support, including SI5338A-B05430-GMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI5338A-B05430-GMR requirements.

6.How does Aetrix verify that SI5338A-B05430-GMR is sourced from the original manufacturer or authorized distributors?

All SI5338A-B05430-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 SI5338A-B05430-GMR meets industry standards.

7.What is the process for return or replacement of SI5338A-B05430-GMR?

All SI5338A-B05430-GMR units undergo pre-shipment inspection (PSI). If there is an issue with SI5338A-B05430-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 SI5338A-B05430-GMR part is unused and in its original packaging.

Return procedure for SI5338A-B05430-GMR:

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…