Equivalent & Substitute Parts for 2308-2HDCG8

Part Overview

The Renesas Electronics 2308-2HDCG8 is a Multiplier, Zero Delay Buffer IC designed for clock/timing applications. This device operates at a maximum frequency of 133.3MHz with a 1:8 input-to-output ratio and features integrated PLL with bypass capability. The part is classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

2308-2HDCG8

Renesas Electronics CorporationIn Stock: 9862308-2HDCG8 Datasheet

Current PartRFQ

CDCVF25081D

Texas InstrumentsIn Stock: 1190CDCVF25081D Datasheet

MFR RecommendedRFQ

CDCVF25081DR

Texas InstrumentsIn Stock: 6366CDCVF25081DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 2308-2HDCG8 is determined by the following critical parameters:

• Package Compatibility: Both substitute parts maintain the 16-SOIC (0.154", 3.90mm Width) surface mount package, ensuring mechanical and electrical PCB compatibility.
• Supply Voltage: All parts operate within the 3V ~ 3.6V range, maintaining power supply compatibility.
• Logic Levels: Input and output logic remain LVTTL across all parts, preserving signal integrity in existing circuits.
• PLL with Bypass: All parts include integrated PLL with bypass functionality, supporting the same operational modes.
• Number of Circuits: Single circuit configuration maintained across all parts.
• Mounting Type: Surface mount technology consistent across all alternatives.

The substitute parts (CDCVF25081D and CDCVF25081DR) are Texas Instruments PLL Clock Driver ICs that meet these core compatibility requirements. While the input-to-output ratio differs (2:8 versus 1:8), both substitute parts operate at higher maximum frequencies (200MHz) and maintain active product status, providing long-term availability and support.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The 2308-2HDCG8 is classified as obsolete, while both CDCVF25081D and CDCVF25081DR maintain active product status from Texas Instruments. Active status ensures continued manufacturing, technical support, and long-term availability for production and field replacement applications.

Compliance and Certification: Both substitute parts are ROHS3 compliant, meeting current environmental and regulatory requirements. The original part's compliance status is not specified in available documentation. Both substitutes maintain REACH unaffected status and identical ECCN classification (EAR99), supporting equivalent export and regulatory compliance.

Packaging Options: CDCVF25081D is supplied in tube packaging, while CDCVF25081DR is supplied in cut tape and Digi-Reel formats. Selection between these variants depends on procurement volume and assembly line requirements.

Operating Temperature Range: The substitute parts extend the operating temperature range to -40°C ~ 85°C compared to the original 0°C ~ 70°C specification, providing enhanced thermal performance for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can CDCVF25081D and CDCVF25081DR be used interchangeably with the 2308-2HDCG8?

A: Both Texas Instruments parts are electrically and mechanically compatible substitutes. They share identical package geometry (16-SOIC), supply voltage range (3V ~ 3.6V), logic levels (LVTTL), and PLL with bypass functionality. The primary difference is packaging format: CDCVF25081D uses tube packaging, while CDCVF25081DR uses cut tape and Digi-Reel formats.

Q: What is the significance of the different input-to-output ratios (1:8 versus 2:8)?

A: The original 2308-2HDCG8 provides a 1:8 multiplication ratio, while both substitute parts provide a 2:8 ratio. This difference affects the frequency multiplication factor and must be evaluated against specific circuit requirements and clock distribution architecture in the target application.

Q: Why are the substitute parts rated for higher maximum frequency (200MHz versus 133.3MHz)?

A: The CDCVF25081D and CDCVF25081DR are designed with higher frequency capability, providing operational margin above the original part's specification. This enhanced performance does not compromise compatibility with lower-frequency applications.

Q: Are there any compliance or regulatory differences between the original and substitute parts?

A: Both substitute parts are ROHS3 compliant and REACH unaffected, meeting current environmental standards. The original part's compliance status is not documented. Both substitutes maintain identical ECCN classification (EAR99) and HTSUS codes, supporting equivalent regulatory treatment.

Q: What packaging considerations should guide the selection between CDCVF25081D and CDCVF25081DR?

A: CDCVF25081D is supplied in tube format, suitable for lower-volume applications and manual assembly. CDCVF25081DR is supplied in cut tape and Digi-Reel formats, optimized for high-volume automated assembly lines. Inventory availability and procurement volume should determine the appropriate variant.