Renesas 2308-4DCG8 Equivalent & Substitute Parts

Part Overview

The Renesas 2308-4DCG8 is a Multiplier, Zero Delay Buffer IC designed for clock/timing applications with a maximum frequency of 133.3MHz and an input-to-output ratio of 1:8. This device operates with LVTTL input and output levels, supporting a supply voltage range of 3V to 3.6V, and is housed in a 16-SOIC package.

The 2308-4DCG8 is classified as Obsolete. Identifying equivalent and substitute parts is necessary to maintain system functionality and ensure continued availability for new designs or replacement requirements in existing applications.

Substiute Parts

2308-4DCG8

Renesas Electronics CorporationIn Stock: 26492308-4DCG8 Datasheet

Current PartRFQ

8T49N240-998NLGI8

Renesas Electronics CorporationIn Stock: 9078T49N240-998NLGI8 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2308-4DCG8 is based on functional equivalence within the clock/timing IC category. The primary substitute identified is the 8T49N240-998NLGI8, which shares the following critical parameters with the original part:

Substitution Criteria:

• Manufacturer: Both parts are manufactured by Renesas Electronics Corporation
• Category: Both are Clock/Timing integrated circuits
• Functional Type: Both provide clock multiplication and signal conditioning capabilities
• PLL Support: Both include Phase-Locked Loop functionality
• Number of Circuits: Both contain 1 circuit
• Mounting Type: Both are Surface Mount devices
• MSL Rating: Both have MSL 3 (168 Hours) rating
• Supply Voltage Compatibility: Both operate within overlapping voltage ranges
• REACH and ECCN Status: Both share identical regulatory classifications

The 8T49N240-998NLGI8 represents an advanced alternative with enhanced frequency capability and expanded signal compatibility, making it suitable for applications requiring higher performance or broader input/output signal support.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The 2308-4DCG8 is classified as Obsolete, which restricts its availability for new designs and future procurement. The 8T49N240-998NLGI8 is classified as Active, ensuring continued manufacturing support, availability, and long-term supply chain reliability.

Compliance and Certification: The 8T49N240-998NLGI8 is ROHS3 Compliant, meeting current environmental and regulatory requirements for electronic components. The original 2308-4DCG8 is RoHS non-compliant, which may present restrictions in certain markets and applications. Both parts share identical REACH and ECCN classifications (REACH Unaffected, EAR99), indicating equivalent regulatory standing in these categories.

Functional Capability: The 8T49N240-998NLGI8 provides extended frequency support (867MHz versus 133.3MHz) and broader signal compatibility across multiple input and output standards. This enhanced capability supports applications requiring higher performance or signal format flexibility while maintaining core clock/timing functionality.

Package and Thermal Considerations: The substitute part operates across an extended temperature range (-40°C to 85°C versus 0°C to 70°C), providing greater thermal margin for demanding environments. The package change from 16-SOIC to 40-VFQFN requires PCB layout modification and design validation.

Frequently Asked Questions (FAQ)

Q: Can the 8T49N240-998NLGI8 directly replace the 2308-4DCG8 without design changes?

A: Direct pin-for-pin replacement is not possible due to different package types (16-SOIC versus 40-VFQFN). PCB layout redesign is required. However, functional substitution is valid based on shared clock/timing capabilities and regulatory compliance.

Q: What are the key differences in signal compatibility between these parts?

A: The 2308-4DCG8 supports LVTTL input and output exclusively. The 8T49N240-998NLGI8 supports multiple input standards (LVCMOS, LVDS, LVHSTL, LVPECL, Crystal) and multiple output standards (HCSL, LVCMOS, LVDS, LVPECL), providing greater flexibility for diverse system architectures.

Q: Is the supply voltage range compatible between these parts?

A: The 2308-4DCG8 requires 3V to 3.6V. The 8T49N240-998NLGI8 operates from 1.71V to 3.465V. The substitute part's range encompasses the original part's voltage window, ensuring compatibility in systems designed for the original specification.

Q: What is the impact of the frequency difference on system design?

A: The 8T49N240-998NLGI8 supports frequencies up to 867MHz, compared to 133.3MHz for the 2308-4DCG8. This enhanced capability allows the substitute to support higher-speed applications while remaining suitable for lower-frequency legacy designs.

Q: Are there moisture sensitivity considerations for storage and handling?

A: Both parts carry MSL 3 (168 Hours) ratings, indicating identical moisture sensitivity levels. Storage and handling procedures must comply with this classification regardless of which part is selected.

Q: What is the significance of the RoHS compliance difference?

A: The 2308-4DCG8 is RoHS non-compliant, while the 8T49N240-998NLGI8 is ROHS3 Compliant. For new designs or applications subject to environmental regulations, the substitute part is the appropriate selection. Legacy systems may continue using the original part if already in production.