8T49N222B-108NLGI Equivalent & Substitute Parts

Part Overview

The 8T49N222B-108NLGI is a universal frequency translator IC manufactured by Renesas Electronics Corporation, designed for clock and timing applications. This device operates at a maximum frequency of 122.88MHz and features multiple input types including HCSL, LVDS, LVHSTL, LVPECL, and Crystal inputs, with LVDS output capability. The part is classified as Obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

8T49N222B-108NLGI

Renesas Electronics CorporationIn Stock: 14368T49N222B-108NLGI Datasheet

Current PartRFQ

RC22504A000GNK#BB0

Renesas Electronics CorporationIn Stock: 1605RC22504A000GNK#BB0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 8T49N222B-108NLGI is determined by the following critical parameters:

Functional Compatibility Criteria:

• Device type classification (Clock/Timing, Frequency Translator/Synthesizer)
• Input signal type acceptance (HCSL, LVDS, LVHSTL, LVPECL, Crystal)
• Output signal type (LVDS)
• Frequency range capability (minimum 122.88MHz support)
• Differential input and output capability (Yes/Yes)
• Number of circuits (1)

Electrical Compatibility Criteria:

• Supply voltage range overlap or compatibility (2.375V ~ 3.465V)
• Operating temperature range (-40°C ~ 85°C)
• Input:Output ratio compatibility (3:2)

Physical & Compliance Criteria:

• Surface mount packaging
• RoHS3 compliance
• REACH compliance status

The substitute part RC22504A000GNK#BB0 meets these criteria as an active alternative within the FemtoClock® family from Renesas Electronics Corporation.

Parameter Comparison

Engineering Selection Recommendations

The RC22504A000GNK#BB0 is an active substitute for the obsolete 8T49N222B-108NLGI. Both devices are manufactured by Renesas Electronics Corporation and maintain ROHS3 and REACH compliance. The substitute operates within the same temperature range and supports differential input and output configurations.

Key considerations for selection:

Advantages of RC22504A000GNK#BB0:

• Active product status ensures ongoing availability and support
• Higher maximum frequency capability (180MHz, 1GHz vs. 122.88MHz)
• Expanded output signal type options (CML, HCSL, LVCMOS, LVDS, LVPECL)
• Superior moisture sensitivity rating (MSL 1 vs. MSL 3)
• Dual supply voltage options (1.71V ~ 1.89V, 3.465V)

Design Considerations:

• Package change from 48-VFQFN to 24-WFQFN requires PCB layout modification
• Reduced input type options (Clock, Crystal vs. HCSL, LVDS, LVHSTL, LVPECL, Crystal) may require signal conditioning in certain applications
• Input:Output ratio differs (2:5 vs. 3:2), requiring frequency calculation verification

Frequently Asked Questions (FAQ)

Q: Can RC22504A000GNK#BB0 directly replace 8T49N222B-108NLGI without PCB modifications?

A: No. The package change from 48-VFQFN to 24-WFQFN requires PCB layout redesign. Pin assignments and footprints differ significantly.

Q: What are the key electrical differences between these parts?

A: The substitute offers higher frequency capability (up to 1GHz), expanded output signal types, and dual supply voltage options. However, it accepts fewer input signal types. The Input:Output ratio changes from 3:2 to 2:5, requiring frequency calculation verification for your specific application.

Q: Are both parts compliant with environmental and regulatory standards?

A: Yes. Both the 8T49N222B-108NLGI and RC22504A000GNK#BB0 are ROHS3 compliant and REACH unaffected.

Q: What is the significance of the MSL rating difference?

A: The substitute has MSL 1 (unlimited moisture exposure) compared to MSL 3 (168 hours) for the original part. This provides superior protection during storage and handling, reducing risk of moisture-induced failures.

Q: Can the substitute handle the same supply voltage as the original part?

A: Partial compatibility exists. The original part operates at 2.375V ~ 3.465V. The substitute offers 1.71V ~ 1.89V or 3.465V supply options. The 3.465V upper range overlaps, but the lower voltage range differs. Verify your specific supply voltage requirements.

Q: What input signal types does the substitute accept?

A: The RC22504A000GNK#BB0 accepts Clock and Crystal inputs, compared to the original part's HCSL, LVDS, LVHSTL, LVPECL, and Crystal inputs. If your application requires HCSL, LVDS, LVHSTL, or LVPECL inputs, signal conditioning or alternative solutions may be necessary.