DSC557-0341FE1

Overview

The DSC557-0341FE1 is a two-output PCI Express clock generator from Microchip Technology, utilizing silicon MEMS technology to eliminate the need for an external 25 MHz crystal. It provides a 100 MHz differential output with HCSL and LVCMOS formats. The device operates within a supply voltage range of 2.25V to 3.6V and supports PCIe Gen1 through Gen4 common clock specifications. Designed for commercial applications, it functions reliably between -20°C and +70°C. The component features low power consumption, high shock and vibration immunity, and includes an output enable/disable function via the OE pin.

Feature Summary

• Complies with PCIe Gen1/2/3/4 Common Clock Specifications
• Integrated MEMS Resonator eliminates external quartz crystal requirements
• Dual Output Formats: HCSL and LVCMOS options available
• Space-saving 14-Lead QFN Package (2.5 mm x 3.2 mm)

Applications

• Communications and Networking equipment including Ethernet and Routers
• Storage solutions such as SAN, NAS, SSD, and JBOD systems
• Embedded Applications in Industrial, Medical, and Avionics sectors

Procurement Notes

Verify the specific ordering suffix 'E' corresponds to the Commercial temperature grade (-20°C to +70°C) and ±50 ppm frequency stability as defined in the product identification system. Confirm package availability matches the 14-Lead QFN form factor. Ensure compatibility with surface mount reflow profiles specified in the datasheet.

Selection Notes

Select this model for designs requiring dual differential outputs without external crystals. The HCSL/LVCMOS combination suits interfaces needing both differential signaling and single-ended logic levels. Verify that the commercial temperature range meets environmental requirements. Check if the ±50 ppm stability aligns with system jitter budgets compared to the standard ±100 ppm option.

Part Context

This part belongs to the DSC557-03 series, which offers two-output PCIe clock generation. Variants differ by output format codes (e.g., 4 for HCSL, 1 for LVCMOS), temperature grades (E for Commercial, I for Industrial, L for Extended), and frequency stability (0 for ±100 ppm, 1 for ±50 ppm). The 'F' indicates the 14-Lead QFN package.

Replacement Considerations

Direct replacements include other DSC557-03 variants with matching output formats and temperature ranges. Cross-reference the specific suffix codes to ensure identical electrical characteristics and pinout compatibility before substitution.