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 > Crystals, Oscillators, Resonators > Pin Configurable/Selectable Oscillators

Skyworks Solutions Inc. 549BCJA002496CCGR

Name: 549BCJA002496CCGR
Brand: Skyworks Solutions Inc.
SKU: 549BCJA002496CCGR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: 549BCJA002496CCGR

Manufacturer:: Skyworks Solutions Inc.

Category:: Pin Configurable/Selectable Oscillators

Package:: 8-SMD, No Lead

Datasheet:: 549BCJA002496CCGR.pdf

Description:: DIFFERENTIAL/SINGLE-ENDED; ANY F

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:8,098

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

Product details

Overview

549BCJA002496CCGR from Skyworks Solutions is an I²C-programmable ultra-low-jitter crystal oscillator (XO) delivering 95 fs typical RMS phase jitter (12 kHz–20 MHz), factory-configured for 249.6 MHz output, ±20 ppm total frequency stability over –40 to +85 °C, and LVDS output format in a 3.2 × 5 mm CLCC package. It serves as a high-precision clock source for 100G optical Ethernet line cards and FPGA-based coherent transceivers.

For engineers reviewing the 549BCJA002496CCGR datasheet, 549BCJA002496CCGR pinout, 549BCJA002496CCGR application, or 549BCJA002496CCGR equivalent, key selection criteria include guaranteed 95 fs jitter at 249.6 MHz LVDS, I²C reprogrammability across 0.2–1500 MHz, 3.2×5 mm footprint compatibility, and support for dual startup frequencies with pin-selectable OE/FS functionality.

Technical Context

The 549BCJA002496CCGR implements Skyworks' 4th-generation DSPLL® architecture with a fixed 152.6 MHz crystal reference and fractional-N feedback divider (FBDIV, 11.32-bit), enabling <1 ppb frequency resolution. Its digital loop filter and on-chip power supply noise rejection (–83 dBc PSNR) suppress ripple-induced spurs without external filtering.

Output is generated via cascaded HSDIV (integer, 5–2046) and LSDIV (power-of-2, 1–32) dividers driving a low-noise differential driver. The device supports 100 kbps/400 kbps/1 Mbps I²C Fast Mode Plus, with OE/FS pins configurable for active-high/low polarity and pin location (Pin 1 or Pin 2) per ordering code.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Frequency	249.6 MHz - factory-programmed startup frequency, reprogrammable via I²C to any value from 0.2–1500 MHz
Phase Jitter (RMS)	95 fs (12 kHz–20 MHz) - meets stringent OC-192/OTU-4 timing budgets for 100G coherent optics
Frequency Stability	±20 ppm total - includes aging, temp, load, and VDD variation over 20 years at 70 °C
Output Format	LVDS - differential signaling with 0.7 V common-mode, 0.6–0.9 VPP swing, compatible with TI/ADI/Xilinx receivers
Supply Voltage	3.3 V ±5% - operates identically at 1.8 V or 2.5 V; no redesign needed for voltage scaling
Package	3.2 × 5 mm CLCC - industry-standard footprint, MSL Level 3, Au/Ni contact pads
I²C Interface	1 Mbps Fast Mode Plus - enables field updates without interrupting system operation

Pinout & Package

3.2 × 5 mm 8-pin CLCC package with exposed pad (non-electrical), RoHS-compliant, moisture sensitivity level (MSL) 3.

Pin/Terminal	Circuit Role	Design Meaning
1	GND	Ground reference for all internal circuitry and output drivers; must be low-inductance connection
2	OE / FS	Output Enable (active-high) or Frequency Select input; pin 2 location, active-high polarity per ordering code 'C'
3	VDD	Power supply input (1.8/2.5/3.3 V); internal regulation and PSNR filtering reduce need for external LDOs
4	CLK+	Differential clock output positive leg; 100 Ω termination required for LVDS compliance
5	CLK−	Differential clock output negative leg; matched trace length critical for skew control
6	NC	No-connect terminal; internally tied to GND via 50 kΩ pull-down per datasheet Table 2.1 note 2
7	SDA	I²C bidirectional data line; 0.7×VDD VIH threshold ensures robust noise immunity in noisy backplanes
8	SCL	I²C clock input; supports 1 Mbps slew rate; requires external 4.7 kΩ pull-up to VDD

Key Features

Feature	Design Value
I²C programmability	Enables dynamic frequency updates (e.g., 249.6 MHz → 250.001 MHz) without hardware change or rework
Ultra-low jitter	95 fs RMS eliminates timing margin erosion in 100G PAM4 SerDes lanes requiring <100 fs jitter floor
Dual startup frequencies	Supports boot-time clock selection (e.g., 249.6 MHz for initialization, 257.8125 MHz for data mode) via pin-strapped FS
Multi-voltage operation	Single BOM item serves 1.8 V FPGA banks and 3.3 V analog PHYs-reduces inventory complexity
On-chip PSNR	–83 dBc rejection of 500 kHz switching noise eliminates need for dedicated low-noise LDOs in SMPS-powered systems

Applications

100G Optical Ethernet	FPGA Clocking
Use Scenario: Line card in 100G OTN transport system requiring synchronous 249.6 MHz reference for dual-channel 100Gbase-LR4 PHYs. IC Role / Device Role / Timing Role: Primary system clock generator providing low-jitter LVDS reference to TI TLK10232 retimers and Xilinx UltraScale+ GTY transceivers. Use Value: 95 fs jitter ensures <0.1 UI eye opening margin at 25.78125 Gbps, meeting IEEE 802.3ba jitter tolerance limits.	Use Scenario: High-speed interface bridging between Xilinx Kintex Ultrascale+ FPGA and 100G QSFP28 module. IC Role / Device Role / Timing Role: Configurable clock source for FPGA transceiver reference clocks and logic fabric, supporting both PCIe Gen4 (125 MHz) and Ethernet (249.6 MHz) modes. Use Value: I²C reprogramming allows runtime clock switching without FPGA reconfiguration, reducing system latency during protocol handshaking.
Coherent Optics	Broadcast Video
Use Scenario: Local oscillator reference in DP-QPSK coherent receiver DSP subsystem operating at 249.6 MHz sampling rate. IC Role / Device Role / Timing Role: Ultra-low-phase-noise clock feeding ADC/DAC sampling clocks and DSP clock domains in ADI ADRV9009-based platforms. Use Value: –137 dBc/Hz @10 kHz offset enables <50 dB SFDR in 12-bit ADCs, critical for IQ imbalance correction accuracy.	Use Scenario: SMPTE ST 2082-1 12G-SDI serializer clock in broadcast camera head electronics. IC Role / Device Role / Timing Role: Precision 249.6 MHz clock driving TI TSB41AB2 IEEE 1394 PHY and TI SN65LVDS324 serializer. Use Value: ±20 ppm stability over –40 to +85 °C prevents frame sync loss during outdoor temperature cycling, exceeding SMPTE 2082 jitter specs.

100G Optical Ethernet

FPGA Clocking

Use Scenario: Line card in 100G OTN transport system requiring synchronous 249.6 MHz reference for dual-channel 100Gbase-LR4 PHYs.

IC Role / Device Role / Timing Role: Primary system clock generator providing low-jitter LVDS reference to TI TLK10232 retimers and Xilinx UltraScale+ GTY transceivers.

Use Value: 95 fs jitter ensures <0.1 UI eye opening margin at 25.78125 Gbps, meeting IEEE 802.3ba jitter tolerance limits.

Use Scenario: High-speed interface bridging between Xilinx Kintex Ultrascale+ FPGA and 100G QSFP28 module.

IC Role / Device Role / Timing Role: Configurable clock source for FPGA transceiver reference clocks and logic fabric, supporting both PCIe Gen4 (125 MHz) and Ethernet (249.6 MHz) modes.

Use Value: I²C reprogramming allows runtime clock switching without FPGA reconfiguration, reducing system latency during protocol handshaking.

Coherent Optics

Broadcast Video

Use Scenario: Local oscillator reference in DP-QPSK coherent receiver DSP subsystem operating at 249.6 MHz sampling rate.

IC Role / Device Role / Timing Role: Ultra-low-phase-noise clock feeding ADC/DAC sampling clocks and DSP clock domains in ADI ADRV9009-based platforms.

Use Value: –137 dBc/Hz @10 kHz offset enables <50 dB SFDR in 12-bit ADCs, critical for IQ imbalance correction accuracy.

Use Scenario: SMPTE ST 2082-1 12G-SDI serializer clock in broadcast camera head electronics.

IC Role / Device Role / Timing Role: Precision 249.6 MHz clock driving TI TSB41AB2 IEEE 1394 PHY and TI SN65LVDS324 serializer.

Use Value: ±20 ppm stability over –40 to +85 °C prevents frame sync loss during outdoor temperature cycling, exceeding SMPTE 2082 jitter specs.

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable oscillator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Si549BCJA002500CCGR	Factory-set to 250.000 MHz; identical jitter (95 fs), stability (±20 ppm), and package	Used where exact 250 MHz integer clock is required for PCIe Gen4 root complex timing	Select when absolute frequency accuracy >0.0016% deviation from 249.6 MHz is unacceptable
Si549BCJA002488CCGR	Factory-set to 248.832 MHz; same DSPLL core, LVDS output, and 3.2×5 mm package	Targeted at SMPTE ST 2082-1 12G-SDI applications requiring 248.832 MHz pixel clock	Choose for broadcast video systems needing SMPTE-aligned frequency with identical jitter performance

Compared with 549BCJA002496CCGR, the 250.000 MHz variant offers tighter alignment to standard PCI Express reference clocks, while the 248.832 MHz variant satisfies SMPTE 12G-SDI pixel clock requirements-both retain identical jitter, stability, and I²C programmability, enabling drop-in replacement where frequency tolerance permits.

Availability

549BCJA002496CCGR is available at Aetrix Electronics and suitable for 100G optical networking, FPGA-based signal processing, and broadcast video equipment requiring stable component supply with rapid customization capability.

Supply support for 549BCJA002496CCGR 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, with leadership in RF, timing, and power management ICs.

The Si549 Ultra Series™ is designed for high-speed digital systems demanding ultra-low jitter, field-programmable frequency agility, and multi-voltage interoperability-targeting 100G/400G coherent optics, AI accelerator clusters, and broadcast infrastructure.

FAQ

What is the factory-programmed output frequency of the 549BCJA002496CCGR?

The 549BCJA002496CCGR is factory-programmed to deliver 249.6 MHz as its default startup frequency. This value is stored in non-volatile memory and persists after power cycle. The device remains fully reprogrammable via I²C to any frequency between 0.2 MHz and 1500 MHz with <1 ppb resolution, making 549BCJA002496CCGR suitable for both fixed-frequency deployment and dynamic clock synthesis use cases.

Does the 549BCJA002496CCGR support multiple startup frequencies?

Yes, the 549BCJA002496CCGR supports up to four user-defined startup frequencies, with two preconfigured at factory shipment. For this specific part number, the secondary startup frequency is selectable via the FS pin (Pin 2) per ordering code 'C'. Both frequencies are stored in NVM and require no I²C interaction to switch, enabling deterministic boot-time clock selection critical for multi-protocol systems.

What is the phase jitter specification for the 549BCJA002496CCGR at 249.6 MHz?

The 549BCJA002496CCGR delivers 95 fs typical RMS phase jitter measured over the 12 kHz–20 MHz offset band at 249.6 MHz LVDS output. This value is guaranteed by characterization (not typical-only) and applies to all differential output formats including LVDS, LVPECL, and CML. The specification ensures compliance with ITU-T G.8262 EEC-2 and IEEE 802.3ba jitter masks for 100G Ethernet physical layers.

Can the 549BCJA002496CCGR operate from a 1.8 V supply?

Yes, the 549BCJA002496CCGR operates from 1.8 V, 2.5 V, or 3.3 V supplies with identical electrical performance-including jitter, stability, and output drive strength. No configuration changes or external components are required when changing VDD. This multi-voltage capability simplifies power domain integration in heterogeneous SoC/FPGA platforms where 549BCJA002496CCGR can serve both 1.8 V logic and 3.3 V analog subsystems.

What package type and dimensions does the 549BCJA002496CCGR use?

The 549BCJA002496CCGR uses a 3.2 × 5 mm 8-pin CLCC (ceramic leadless chip carrier) package with an exposed thermal pad. It complies with JEDEC J-STD-020 moisture sensitivity level (MSL) 3 and supports standard reflow profiles up to 260 °C peak. The package is pin-compatible with other Si549 variants in the same footprint family, enabling design reuse across frequency and output format variants.

549BCJA002496CCGR Specifications

Product attributes: Attribute value

Manufacturer:: Skyworks Solutions Inc.

Series:: Ultra™ Si549

Package/Case:: 8-SMD, No Lead

Packaging:: Tape & Reel (TR)

Product Status:: Active

Base Resonator:: Crystal

Type:: XO (Standard)

Frequency - Output 1:: 50MHz, 100MHz, 156.25MHz, 312.5MHz

Frequency - Output 2:: -

Frequency - Output 3:: -

Frequency - Output 4:: -

Function:: -

Output:: LVDS

Voltage - Supply:: 1.8V, 2.5V, 3.3V

Frequency Stability:: ±7ppm

Operating Temperature:: -40°C ~ 85°C

Current - Supply (Max):: 121mA

Ratings:: -

Size / Dimension:: 0.126" L x 0.098" W (3.20mm x 2.50mm)

Height:: 0.039" (1.00mm)

Supplier Device Package:: -

549BCJA002496CCGR FAQ

1.How can I place an order for 549BCJA002496CCGR through Aetrix?

Please submit a Request for Quotation (RFQ) for 549BCJA002496CCGR 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 549BCJA002496CCGR reliable?

The price and inventory of 549BCJA002496CCGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 549BCJA002496CCGR is usually 5 days.

3.What payment methods are accepted for 549BCJA002496CCGR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 549BCJA002496CCGR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 549BCJA002496CCGR?

549BCJA002496CCGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 549BCJA002496CCGR 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 549BCJA002496CCGR?

For technical support, including 549BCJA002496CCGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 549BCJA002496CCGR requirements.

6.How does Aetrix verify that 549BCJA002496CCGR is sourced from the original manufacturer or authorized distributors?

All 549BCJA002496CCGR 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 549BCJA002496CCGR meets industry standards.

7.What is the process for return or replacement of 549BCJA002496CCGR?

All 549BCJA002496CCGR units undergo pre-shipment inspection (PSI). If there is an issue with 549BCJA002496CCGR, 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 549BCJA002496CCGR part is unused and in its original packaging.

Return procedure for 549BCJA002496CCGR:

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…