49FCT805BTSOG8 Equivalent & Substitute Parts

Part Overview

The 49FCT805BTSOG8 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 compatibility across a 4.5V to 5.5V supply voltage range and 0°C to 70°C operating temperature.

The 49FCT805BTSOG8 is classified as obsolete. Identifying suitable substitute components is necessary to maintain design continuity, ensure supply chain reliability, and support long-term product availability for applications requiring clock distribution functionality.

Substiute Parts

49FCT805BTSOG8

Renesas Electronics CorporationIn Stock: 262849FCT805BTSOG8 Datasheet

Current PartRFQ

8L30210NLGI8

Renesas Electronics CorporationIn Stock: 9438L30210NLGI8 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 49FCT805BTSOG8 is determined by the following critical parameters:

• Functional Type: Clock buffer or fanout buffer capability for clock distribution applications
• Input/Output Compatibility: Support for CMOS and LVTTL signal levels
• Supply Voltage Range: Operational compatibility within or overlapping the 4.5V to 5.5V range
• Package Compatibility: Surface mount packaging suitable for PCB integration
• Product Status: Active or available alternatives to the obsolete 49FCT805BTSOG8
• Compliance Standards: RoHS3 compliance and REACH unaffected status

The 8L30210NLGI8 qualifies as a manufacturer-recommended substitute based on its active product status, clock buffer functionality, compatible signal level support (LVCMOS, LVTTL output), surface mount packaging, and equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The 8L30210NLGI8 is the manufacturer-recommended substitute for the obsolete 49FCT805BTSOG8. Both components are manufactured by Renesas Electronics Corporation and maintain ROHS3 compliance and REACH unaffected status.

Key considerations for selection:

• Product Status: The 8L30210NLGI8 is active and currently in production, ensuring long-term availability and supply chain continuity.
• Signal Level Compatibility: Both parts support LVTTL output, enabling direct functional replacement in applications requiring LVTTL clock distribution.
• Package Transition: The substitute uses 32-VFQFN packaging instead of 20-SOIC, requiring PCB layout modification.
• Supply Voltage Difference: The 8L30210NLGI8 operates at 1.4V to 3.465V, which does not overlap with the original 4.5V to 5.5V range. Circuit redesign may be necessary for voltage compatibility.
• Temperature Range: The substitute supports -40°C to 85°C, providing extended operating temperature coverage compared to the original 0°C to 70°C range.
• Moisture Sensitivity: The substitute has MSL 3 (168 Hours) versus MSL 1 (Unlimited), requiring stricter moisture control during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can the 8L30210NLGI8 directly replace the 49FCT805BTSOG8 without circuit modifications?

A: Direct replacement is not possible due to supply voltage incompatibility. The 49FCT805BTSOG8 requires 4.5V to 5.5V, while the 8L30210NLGI8 operates at 1.4V to 3.465V. Circuit redesign is necessary to accommodate the different voltage requirements.

Q: What are the package differences between these parts?

A: The 49FCT805BTSOG8 uses 20-SOIC (0.295", 7.50mm Width) packaging, while the 8L30210NLGI8 uses 32-VFQFN Exposed Pad (5x5) packaging. PCB layout and footprint modifications are required for substitution.

Q: Are both parts RoHS compliant?

A: Yes, both the 49FCT805BTSOG8 and 8L30210NLGI8 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: What is the significance of the different Moisture Sensitivity Levels?

A: The 49FCT805BTSOG8 has MSL 1 (Unlimited), allowing indefinite storage without moisture control. The 8L30210NLGI8 has MSL 3 (168 Hours), requiring storage in controlled humidity environments and limiting the time the component can be exposed to ambient conditions before soldering.

Q: Why is the 8L30210NLGI8 recommended as a substitute if the supply voltage does not match?

A: The 8L30210NLGI8 is the manufacturer-recommended substitute based on functional clock buffer capability and signal level compatibility. However, voltage incompatibility requires circuit-level redesign. Applications operating at lower voltages (1.4V to 3.465V) can utilize this substitute directly.