Skyworks Solutions Inc. SI5334C-B05751-GMR

Overview

SI5334C-B05751-GMR from Skyworks Solutions is a pin-controlled, quad-output any-frequency clock generator with four independently configurable differential clock outputs. It synthesizes frequencies from 0.16 MHz to 710 MHz per output using MultiSynth fractional-N synthesis, delivers 0.7 ps RMS typical phase jitter, supports LVPECL/LVDS/HCSL/CMOS/SSTL/HSTL formats, and operates from 1.8/2.5/3.3 V core and output supplies. It is deployed in PCIe 3.0 timing, FPGA clocking, and broadcast video systems.

For engineers reviewing the SI5334C-B05751-GMR datasheet, SI5334C-B05751-GMR pinout, SI5334C-B05751-GMR application, or SI5334C-B05751-GMR equivalent, key selection criteria include its 4× independent differential outputs, factory-programmed configuration, zero-ppm frequency accuracy, 20 ps phase step resolution, and support for 710 MHz differential output with <1 ps RMS jitter - all in a space-constrained 4×4 mm QFN24 package.

Technical Context

The SI5334C-B05751-GMR integrates a high-stability fractional-N PLL with on-chip VCO and four independent MultiSynth synthesis stages, each feeding a dedicated output driver. Its architecture enables integer and fractional frequency synthesis up to Fvco/8 (350 MHz) and select higher frequencies (up to 710 MHz) via bypass paths, with input reference flexibility spanning 8–30 MHz crystal or 5–710 MHz differential/single-ended clocks.

Each output features independent voltage control (1.5/1.8/2.5/3.3 V), format selection (LVPECL, LVDS, HCSL, CMOS, SSTL, HSTL), and programmable phase offset (±45 ns in 20 ps steps). The device implements loss-of-signal (LOS) and loss-of-lock (LOL) monitoring, optional zero-delay feedback mode, and pin-controlled frequency increment/decrement (1 ppm steps, glitchless) on CLK0A/B only.

Key Specifications

Pinout & Package

SI5334C-B05751-GMR is housed in a 24-lead, 4×4 mm QFN package with wettable flanks and an exposed thermal pad (pin 24 = GND). Pin assignments are fixed per the Si5334 family; this variant uses factory OTP programming for its specific frequency plan and I/O configuration.

Key Features

Applications

Equivalent & Alternatives

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

Compared with Si5332A-D05751-GM and ICS854S01IAGLF, SI5334C-B05751-GMR uniquely balances factory-programmed simplicity, pin-controlled real-time tuning, and sub-1 ps jitter across four independent outputs - making it optimal for PCIe, FPGA, and broadcast systems where reliability, configurability, and timing precision are co-prioritized.

Availability

SI5334C-B05751-GMR is available at Aetrix Electronics and suitable for PCIe 3.0 timing, FPGA clock distribution, and broadcast video synchronization requiring stable component supply, long-term lifecycle assurance, and guaranteed traceable sourcing.

Supply support for SI5334C-B05751-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 Si5334 product line delivers highly configurable, low-jitter clock generators for systems demanding precise, flexible, and reliable timing - especially in datacenter, telecom infrastructure, and professional AV equipment.

FAQ

What is the maximum differential output frequency supported by the SI5334C-B05751-GMR?

The SI5334C-B05751-GMR supports differential output frequencies up to 710 MHz for LVPECL and LVDS formats under specific divider configurations (e.g., Fvco/4 or Fvco/6 modes), while maintaining full specification compliance for jitter and drive strength. For general-purpose use across all formats, the guaranteed range is 0.16–350 MHz.

Does the SI5334C-B05751-GMR require I²C or SPI configuration to operate?

No. The SI5334C-B05751-GMR is factory-programmed with its configuration stored in one-time-programmable (OTP) memory. Upon power-up, it begins operation immediately without host processor intervention, I²C, or SPI communication - making it ideal for secure, boot-critical, or resource-constrained systems.

Can the SI5334C-B05751-GMR generate four different output frequencies simultaneously?

Yes. The SI5334C-B05751-GMR uses four independent MultiSynth dividers to synthesize up to four distinct frequencies simultaneously - for example, 100 MHz (PCIe), 125 MHz (GbE), 148.5 MHz (SMPTE), and 200 MHz (FPGA logic) - each with its own format, voltage, and phase offset.

What is the significance of the "B05751" suffix in SI5334C-B05751-GMR?

The "B05751" suffix identifies the specific factory-programmed configuration of the SI5334C-B05751-GMR, including its reference input selection (e.g., crystal vs. clock), output frequencies, formats, voltage settings, and enabled features such as spread spectrum or zero-delay mode - all permanently stored in OTP memory.

How does the SI5334C-B05751-GMR handle loss of input reference?

The SI5334C-B05751-GMR asserts the open-drain LOSLOL pin within 2.6–5 µs of input clock loss or PLL unlock. This signal can trigger system-level fault handling, such as failover to backup timing or graceful shutdown. The device continues free-running with degraded jitter until reference recovery.