Skyworks Solutions Inc. SI5338M-B05024-GM

Overview

SI5338M-B05024-GM 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 MultiSynth™ frequency synthesis supporting 0.16–710 MHz output ranges across LVPECL/LVDS/HCSL/CMOS/SSTL/HSTL formats. It replaces up to four crystal oscillators in high-speed networking and FPGA timing applications.

For engineers reviewing the SI5338M-B05024-GM datasheet, SI5338M-B05024-GM pinout, SI5338M-B05024-GM application, or SI5338M-B05024-GM equivalent, key selection criteria include its 24-QFN package, independent per-output voltage (1.5/1.8/2.5/3.3 V), ±20 ps phase step resolution, spread-spectrum capability (0.5–5.0% deviation), and external feedback support for zero-delay mode.

Technical Context

The SI5338M-B05024-GM implements a two-stage PLL architecture: a high-stability reference stage (with crystal or external clock input) followed by four independent MultiSynth™ fractional-N synthesizers, each driving one output channel. Its core operates from 1.8/2.5/3.3 V with 45 mA typical core current and supports input references from 5 MHz (CMOS) to 710 MHz (differential).

Each output driver supports format- and voltage-selectable operation (LVPECL: 0.16–710 MHz; HCSL: 0.16–250 MHz; CMOS: 0.16–200 MHz), independent phase adjustment (<20 ps steps), and glitchless frequency increment/decrement in 1 ppm steps - enabling dynamic clock tuning without system interruption.

Key Specifications

Pinout & Package

SI5338M-B05024-GM uses a 24-lead QFN package (4 × 4 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments are fixed per the Si5338 family: IN1/IN2, IN3/IN4, IN5/IN6 serve as differential/single-ended reference inputs; CLK0A/CLK0B through CLK3A/CLK3B are complementary output pairs; VDDO0–VDDO3 supply dedicated output buffers; SCL/SDA/INTR enable I²C control and interrupt signaling.

Key Features

Applications

Equivalent & Alternatives

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

Compared with Si5332A-A05129-GM and ICS853S02I, SI5338M-B05024-GM offers balanced programmability, jitter performance, and pin compatibility within the Si5338 family - making it optimal for upgrades from earlier Si5338 variants and designs requiring field-tunable clock synthesis without added BOM complexity.

Availability

SI5338M-B05024-GM is available at Aetrix Electronics and suitable for Ethernet switch/router, PCIe Gen 4 host controller, FPGA clocking, and broadcast video timing applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for SI5338M-B05024-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 semiconductor company specializing in analog and mixed-signal connectivity solutions for wireless, broadband, automotive, and industrial markets.

The Si5338 product line delivers programmable, low-jitter clock generation for high-speed digital systems - designed specifically to replace multiple fixed-frequency oscillators while supporting PCIe, Ethernet, and video timing standards.

FAQ

What is the maximum output frequency supported by SI5338M-B05024-GM?

The SI5338M-B05024-GM supports up to 710 MHz on LVPECL and LVDS outputs, 350 MHz on SSTL/HSTL, 250 MHz on HCSL, and 200 MHz on CMOS outputs. Frequencies above 350 MHz require use of Fvco/4 or Fvco/6 synthesis paths, limiting simultaneous high-frequency outputs to two unique values.

Does SI5338M-B05024-GM support PCIe Gen 4 Common Clock mode?

Yes, SI5338M-B05024-GM is compliant with PCIe Gen 4 Common Clock specifications, delivering <0.45 ps RMS jitter at 100 MHz under specified conditions (PLL BW 2–5 MHz, CDR = 10 MHz), validated per PCI-SIG Base Specification 4.0 rev. 0.5.

Can SI5338M-B05024-GM generate different output voltages simultaneously?

Yes, SI5338M-B05024-GM supports independent output buffer supplies (VDDO0–VDDO3), allowing simultaneous operation at 1.5 V, 1.8 V, 2.5 V, and 3.3 V - enabling direct interfacing with mixed-voltage FPGA I/O banks or ASIC domains without external level shifters.

How is SI5338M-B05024-GM programmed in-system?

SI5338M-B05024-GM is programmed via its I²C/SMBus-compatible serial interface using Skyworks' ClockBuilder Pro software, which generates configuration files and registers settings for custom frequency plans, spread-spectrum profiles, and output formatting - all without requiring firmware development.

What reference inputs does SI5338M-B05024-GM accept?

SI5338M-B05024-GM accepts eight reference input types: 8–30 MHz crystal, 5–200 MHz CMOS, 5–350 MHz SSTL/HSTL, and 5–710 MHz differential (LVDS/LVPECL/CML). Input selection is register-configurable, and multiple inputs can be enabled for redundancy or failover.