843241BGLF

Specialized ICS Overview

The ICS843241BG is a low jitter, high performance clock generator belonging to the FemtoClock family. Designed for SAS-2 interconnect systems, it generates selectable output frequencies of 75MHz, 100MHz, 150MHz, or 300MHz using an external 25MHz parallel resonant crystal. The device features up, down, and center spread spectrum clocking techniques and provides one differential LVPECL output pair. It operates on a 3.3V or 2.5V supply with an RMS phase jitter of 0.70ps (typical) at 75MHz over the 900kHz–7.5MHz integration range. The component is housed in an 8-SOIC package.

Specialized ICS Feature Summary

• Designed for SAS-2 systems supporting SSP, STP, and SMP protocols
• Supports up, down, and center spread spectrum clocking
• Selectable output frequencies: 75MHz, 100MHz, 150MHz, 300MHz
• One differential 3.3V or 2.5V LVPECL output pair

Specialized ICS Applications

• SAS/SATA Host Bus Adapters
• SAS I/O Controllers
• SAS Edge and Fanout Expanders
• Disk Storage Enterprise Systems

Specialized ICS Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation, as suffixes determine packaging type such as tube or reel quantities. Confirm RoHS compliance status and lead-free designation requirements for the target assembly process. Check for any end-of-life notifications or last-time-buy statuses associated with this part number before finalizing procurement plans.

Specialized ICS Selection Notes

Select the appropriate frequency variant based on the required system clock speed (75MHz, 100MHz, 150MHz, or 300MHz). Ensure the design supports either 3.3V or 2.5V operating supplies as specified. Verify that the application requires the specific SSC modes (up, down, or center) supported by this device. Confirm compatibility with the 8-SOIC surface mount package constraints.

Specialized ICS Part Context

This component is part of the FemtoClock series of silicon timing products from Renesas Electronics Corporation (formerly IDT/ICS). It is specifically engineered for Serial Attached SCSI (SAS) applications requiring precise clock generation with low jitter characteristics suitable for high-speed data transmission standards.

Specialized ICS Replacement Considerations

Consult the official datasheet for direct pin-compatible alternatives within the same product family. Verify electrical parameter equivalence, particularly jitter specifications and output voltage levels, when considering cross-manufacturer substitutes.