49FCT3805BSOG Equivalent & Substitute Parts

Part Overview

The 49FCT3805BSOG is a Clock Fanout Buffer (Distribution) IC manufactured by Renesas Electronics Corporation, designed for 1:5 clock distribution in 20-SOIC surface mount packaging. This part operates with CMOS and LVTTL input/output levels across a 3V to 3.6V supply voltage range and a 0°C to 70°C operating temperature range.

The 49FCT3805BSOG is classified as obsolete. Identifying suitable substitute components is necessary to maintain design continuity and ensure availability for new production runs or system updates.

Substiute Parts

49FCT3805BSOG

Renesas Electronics CorporationIn Stock: 112649FCT3805BSOG Datasheet

Current PartRFQ

8L30210NLGI

Renesas Electronics CorporationIn Stock: 9638L30210NLGI Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 49FCT3805BSOG is determined by the following critical parameters:

• Functional Type: Clock buffer or fanout buffer capability
• Input/Output Compatibility: Support for CMOS and LVTTL signal levels
• Supply Voltage Range: Overlap with 3V to 3.6V operating window
• Package Compatibility: Surface mount form factor suitable for PCB integration
• Manufacturer Support: Active product status from established semiconductor manufacturers

The substitute part 8L30210NLGI is identified based on functional equivalence as a clock buffer IC from Renesas Electronics Corporation with active product status and compatible signal level support (LVCMOS, LVTTL output).

Parameter Comparison

Engineering Selection Recommendations

The 8L30210NLGI serves as an active substitute for the obsolete 49FCT3805BSOG. Both components are manufactured by Renesas Electronics Corporation and share REACH Unaffected and EAR99 export classification status.

The 8L30210NLGI provides extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) and broader supply voltage compatibility (1.4V to 3.465V encompasses the original 3V to 3.6V range). Output signal levels (LVCMOS, LVTTL) are compatible with the original part's output specifications.

The primary design consideration is package transition from 20-SOIC to 32-VFQFN Exposed Pad, which requires PCB layout modification. The 8L30210NLGI supports multiple input types including LVTTL, ensuring functional compatibility for existing clock distribution applications.

Frequently Asked Questions (FAQ)

Q: Can the 8L30210NLGI directly replace the 49FCT3805BSOG without PCB modifications?

A: No. The 8L30210NLGI uses 32-VFQFN Exposed Pad packaging while the 49FCT3805BSOG uses 20-SOIC packaging. PCB footprint redesign is required.

Q: Are the output signal levels compatible between these parts?

A: Yes. Both parts support LVTTL output levels. The 8L30210NLGI additionally supports LVCMOS output, providing broader compatibility.

Q: Does the 8L30210NLGI support the same supply voltage as the original part?

A: The 8L30210NLGI supply range (1.4V to 3.465V) encompasses the original part's 3V to 3.6V range, ensuring compatibility within the original operating window.

Q: What is the significance of the different input/output ratios?

A: The 49FCT3805BSOG provides 1:5 fanout (one input to five outputs), while the 8L30210NLGI provides 3:10 fanout. Application requirements determine whether this functional difference is acceptable.

Q: Are both parts compliant with current regulatory standards?

A: Both parts maintain REACH Unaffected status and EAR99 export classification. The 8L30210NLGI additionally carries RoHS3 Compliance certification.