49FCT806SOG Equivalent & Substitute Parts

Part Overview

The 49FCT806SOG is a Clock Fanout Buffer (Distribution) IC manufactured by Renesas Electronics Corporation, configured as a 1:5 clock distribution device in a 20-SOIC package. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system support and new design implementations. The part operates within a 4.75V to 5.25V supply range and supports CMOS and LVTTL input/output standards for clock distribution applications.

Substiute Parts

49FCT806SOG

Renesas Electronics CorporationIn Stock: 111049FCT806SOG Datasheet

Current PartRFQ

8L30210NLGI

Renesas Electronics CorporationIn Stock: 9638L30210NLGI Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 49FCT806SOG requires evaluation based on the following critical parameters:

Functional Compatibility Parameters:

• Clock distribution capability (fanout buffer or clock buffer function)
• Input/Output ratio or channel configuration
• Input and output logic standards (CMOS, LVTTL, LVCMOS compatibility)
• Supply voltage range overlap or compatibility

Physical & Environmental Parameters:

• Surface mount packaging format
• Operating temperature range
• Moisture sensitivity level (MSL)

Regulatory & Compliance Parameters:

• RoHS compliance status
• REACH compliance status

The 8L30210NLGI is identified as a manufacturer-recommended substitute. This part maintains clock distribution functionality as a Clock Buffer IC with a 3:10 input:output ratio. Both parts are Renesas Electronics Corporation products, support LVTTL output standards, and are surface-mount devices. However, differences exist in supply voltage ranges, operating temperature specifications, package format, and RoHS compliance status that must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The 8L30210NLGI is the manufacturer-recommended substitute for the obsolete 49FCT806SOG. Selection of this substitute part is supported by the following engineering considerations:

Product Status & Availability: The 49FCT806SOG is classified as obsolete, while the 8L30210NLGI maintains active product status with current manufacturing support from Renesas Electronics Corporation.

Regulatory Compliance: The 8L30210NLGI achieves ROHS3 compliance, addressing modern regulatory requirements. The 49FCT806SOG is RoHS non-compliant, which may restrict use in applications subject to RoHS directives.

Functional Capability: Both parts provide clock distribution functionality with LVTTL output compatibility. The 8L30210NLGI supports an expanded range of input standards (HCSL, LVCMOS, LVDS, LVPECL, LVTTL, Crystal) compared to the 49FCT806SOG (CMOS, LVTTL), providing greater design flexibility.

Operating Temperature Range: The 8L30210NLGI extends the operating temperature range to -40°C ~ 85°C, compared to the 49FCT806SOG range of 0°C ~ 70°C, enabling use in broader environmental conditions.

Supply Voltage Consideration: The 8L30210NLGI operates at 1.4V ~ 3.465V, which does not overlap with the 49FCT806SOG supply range of 4.75V ~ 5.25V. Applications requiring 5V supply operation require circuit-level voltage regulation or alternative substitutes.

Package Format: The 8L30210NLGI uses a 32-VFQFN package, differing from the 20-SOIC package of the 49FCT806SOG. PCB layout and footprint redesign is required for implementation.

Frequently Asked Questions (FAQ)

Q: Can the 8L30210NLGI directly replace the 49FCT806SOG without circuit modifications?

A: Direct replacement is not possible due to supply voltage range incompatibility (1.4V ~ 3.465V versus 4.75V ~ 5.25V) and package format differences (32-VFQFN versus 20-SOIC). Circuit-level voltage regulation and PCB layout redesign are required.

Q: What is the significance of the different input:output ratios (1:5 versus 3:10)?

A: The 49FCT806SOG provides a 1:5 fanout configuration (one input drives five outputs), while the 8L30210NLGI provides a 3:10 configuration (three inputs drive ten outputs). Application requirements determine whether the output channel count and input configuration of the substitute part align with system design specifications.

Q: Does the 8L30210NLGI support the same logic standards as the 49FCT806SOG?

A: Both parts support LVTTL output standards. The 8L30210NLGI accepts a broader range of input standards (HCSL, LVCMOS, LVDS, LVPECL, LVTTL, Crystal) compared to the 49FCT806SOG (CMOS, LVTTL). Input standard compatibility must be verified for specific applications.

Q: What are the implications of the different Moisture Sensitivity Levels (MSL)?

A: The 49FCT806SOG has MSL 1 (unlimited shelf life), while the 8L30210NLGI has MSL 3 (168-hour shelf life after moisture exposure). The 8L30210NLGI requires more stringent moisture control during storage and handling to maintain component reliability.

Q: Why is RoHS compliance important for this substitution?

A: The 8L30210NLGI achieves ROHS3 compliance, meeting regulatory requirements for products sold in regions with RoHS directives. The 49FCT806SOG is RoHS non-compliant, which may restrict its use in new designs or applications subject to regulatory compliance mandates.

Q: Are there frequency or speed specifications that differ between these parts?

A: The 8L30210NLGI specifies a maximum frequency of 200 MHz. The 49FCT806SOG does not include a maximum frequency specification in the provided parameters. Application clock frequency requirements must be evaluated against the 8L30210NLGI specification.