Skyworks Solutions Inc. 542AAA000189BBGR

Overview

542AAA000189BBGR from Skyworks Solutions is an Ultra Series™ quad-output crystal oscillator (XO) based on 4th-generation DSPLL® technology, delivering four factory-programmed frequencies between 0.2–1500 MHz with <1 ppb resolution and 125 fs typical RMS phase jitter (12 kHz–20 MHz). It supports LVPECL/LVDS/CML/HCSL/CMOS/Dual CMOS outputs, operates from 1.8/2.5/3.3 V, and targets high-speed serial data clocking in coherent optical modules.

For engineers reviewing the 542AAA000189BBGR datasheet, 542AAA000189BBGR pinout, 542AAA000189BBGR application, or 542AAA000189BBGR equivalent, this page provides verified technical context, pin-level design meaning, real-world application mapping, and validated alternative options for multi-frequency timing systems requiring ultra-low jitter and fast custom-frequency sampling (1–2 week lead time).

Technical Context

The 542AAA000189BBGR integrates a fixed-frequency crystal with a digitally controlled oscillator (DCO), fractional-N divider, digital phase detector, and digital loop filter to synthesize four independent output frequencies-each selectable via FS[1:0] pins-with guaranteed low-jitter performance across integer and fractional values. Its on-chip power supply regulation delivers –80 dBc typical PSNR, enabling stable operation in noisy switched-mode power supply environments.

Frequency selection is implemented through two dedicated control pins (FS0, FS1), supporting four discrete output states (00–11); OE pin polarity and location are factory-configured per ordering option. Output format (e.g., LVDS, HCSL) and supply voltage range (1.8/2.5/3.3 V) are also set at shipment, eliminating post-manufacture configuration.

Key Specifications

Pinout & Package

542AAA000189BBGR is supplied in a standard 8-pin CLCC package (3.2×5 mm footprint), with exposed pad for thermal management. Pin assignments follow JEDEC-compliant top-view layout.

Key Features

Applications

Equivalent & Alternatives

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

Compared with Si5342-D06894-GM, 542AAA000189BBGR offers full factory configurability across frequency, output format, and OE logic - enabling one-time setup for evolving multi-rate designs. Versus LMK5B33414RGZT, it trades programmability for simplicity, lower power, and guaranteed jitter performance without firmware dependency.

Availability

542AAA000189BBGR is available at Aetrix Electronics and suitable for 100G/400G optical modules, high-speed Ethernet switching, FPGA-based test equipment, and server NIC timing applications requiring stable component supply, rapid prototyping, and long-term lifecycle support.

Supply support for 542AAA000189BBGR 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 semiconductors, specializing in RF, mobile, infrastructure, and timing solutions with >30 years of oscillator design heritage.

The Si542 Ultra Series™ was engineered specifically for next-generation optical transport, high-speed networking, and compute-intensive systems demanding ultra-low jitter, multi-frequency flexibility, and rapid custom-frequency fulfillment.

FAQ

What output formats does the 542AAA000189BBGR support?

The 542AAA000189BBGR supports LVPECL, LVDS, CML, HCSL, CMOS, and Dual CMOS output formats. The specific format is factory-programmed per order - for example, a given 542AAA000189BBGR unit is shipped with one fixed format, selected during configuration. This eliminates post-silicon level-shifting and allows direct interfacing with FPGA transceivers, Ethernet PHYs, or ASIC clock inputs without external buffers.

How is frequency selection implemented on the 542AAA000189BBGR?

Frequency selection on the 542AAA000189BBGR uses two dedicated pins - FS0 and FS1 - which form a 2-bit address to select among four pre-programmed output frequencies (00, 01, 10, 11). These pins have internal 50 kΩ pull-ups to VDD, ensuring deterministic startup behavior. The selected frequency appears on CLK+/CLK− within 10 ms after FS pin transition, as specified in the datasheet's TFS parameter.

Does the 542AAA000189BBGR require an external crystal?

No, the 542AAA000189BBGR does not require an external crystal. It integrates a fixed-frequency fundamental-mode crystal with Skyworks' 4th-generation DSPLL® IC to synthesize all four output frequencies. This architecture eliminates crystal matching tolerances, aging drift, and board-level layout sensitivity associated with discrete XO designs - every 542AAA000189BBGR ships fully calibrated and 100% electrically tested.

What is the power supply noise rejection (PSNR) performance of the 542AAA000189BBGR?

The 542AAA000189BBGR delivers –80 dBc typical power supply noise rejection (PSNR) across 100 kHz–1 MHz, measured with 50 mVpp ripple on VDD while outputting 156.25 MHz LVDS. This on-chip filtering allows direct connection to switched-mode power supplies without additional LDOs or ferrite beads - a key differentiator versus legacy XOs that degrade significantly under SMPS noise.

Can the 542AAA000189BBGR operate at 1.8 V, 2.5 V, and 3.3 V simultaneously?

No, the 542AAA000189BBGR operates from a single VDD supply rail - either 1.8 V, 2.5 V, or 3.3 V - selected at time of order. All internal circuitry, including the DSPLL core and output drivers, is designed to function correctly across that one voltage. The "1.8/2.5/3.3 V" specification means the same part number supports any one of those voltages, not concurrent operation - simplifying voltage rail planning in mixed-voltage systems.