Equivalent & Substitute Parts for Renesas 2308-1DCG

Part Overview

The Renesas 2308-1DCG 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 functionally compatible alternatives essential for ongoing system support and new design implementations.

Substiute Parts

2308-1DCG

Renesas Electronics CorporationIn Stock: 17772308-1DCG Datasheet

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CDCVF25081D

Texas InstrumentsIn Stock: 1190CDCVF25081D Datasheet

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CDCVF25081DR

Texas InstrumentsIn Stock: 6366CDCVF25081DR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Renesas 2308-1DCG is determined by the following critical parameters:

• Package Compatibility: All substitute parts must use the 16-SOIC (0.154", 3.90mm Width) surface mount package to ensure PCB footprint compatibility.
• Logic Levels: Input and output must both be LVTTL to maintain signal integrity with existing circuitry.
• Supply Voltage: Operating voltage range must encompass or be compatible with the 3V ~ 3.6V supply specification.
• PLL with Bypass: The integrated PLL with bypass capability must be present in substitute devices.
• Frequency Performance: Maximum operating frequency must meet or exceed 133.3MHz to support existing clock distribution requirements.
• Multiplier Function: The device must provide clock multiplication capability with a ratio suitable for the application.

The Texas Instruments CDCVF25081D and CDCVF25081DR meet these substitution criteria. Both devices are active products with enhanced frequency capability (200MHz maximum), identical package geometry, matching logic levels, compatible supply voltage, and integrated PLL with bypass functionality.

Parameter Comparison

Engineering Selection Recommendations

CDCVF25081D (Tube Packaging): This Texas Instruments substitute is an active product with full ROHS3 compliance and superior moisture sensitivity rating (MSL 1). The extended operating temperature range (-40°C to 85°C) provides broader environmental coverage compared to the original Renesas part. Tube packaging is suitable for lower-volume applications and manual assembly processes.

CDCVF25081DR (Tape & Reel Packaging): This variant is identical in electrical specifications to the CDCVF25081D but supplied in Tape & Reel format, optimized for high-volume automated assembly. The CDCVF25081DR offers the same active product status, compliance certifications, and enhanced performance characteristics. Tape & Reel packaging is the standard format for production environments.

Both substitutes exceed the original part's maximum frequency specification (200MHz vs. 133.3MHz), providing performance headroom for clock distribution applications. The transition from obsolete to active product status ensures long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the Texas Instruments CDCVF25081D or CDCVF25081DR be used as direct replacements for the Renesas 2308-1DCG?

A: Yes. Both devices share identical package geometry (16-SOIC), logic levels (LVTTL input/output), supply voltage range (3V ~ 3.6V), and PLL with bypass functionality. The 16-pin footprint and pinout compatibility enable direct PCB substitution.

Q: What is the difference between CDCVF25081D and CDCVF25081DR?

A: Both parts are electrically identical. The primary difference is packaging format: CDCVF25081D is supplied in Tube packaging for lower-volume or manual assembly applications, while CDCVF25081DR is supplied in Tape & Reel format for automated high-volume production environments.

Q: Does the higher maximum frequency (200MHz) of the substitute parts affect compatibility?

A: No. Higher maximum frequency specification indicates enhanced performance capability and does not create compatibility issues. The substitute parts operate within the same voltage and logic level specifications as the original part and support all clock frequencies up to and beyond the original 133.3MHz specification.

Q: Are there any temperature range considerations when substituting?

A: The substitute parts operate across a wider temperature range (-40°C to 85°C) compared to the original part (0°C to 70°C). This extended range provides additional environmental flexibility and is fully backward compatible with applications designed for the narrower original range.

Q: What is the significance of the MSL (Moisture Sensitivity Level) difference?

A: The original Renesas part has MSL 3 (168-hour limit), while the Texas Instruments substitutes have MSL 1 (unlimited). Lower MSL ratings indicate reduced moisture sensitivity and provide greater flexibility in storage, handling, and assembly processes without requiring specialized moisture control procedures.

Q: Are both substitute parts ROHS3 compliant?

A: Yes. Both CDCVF25081D and CDCVF25081DR are ROHS3 compliant, matching the compliance status of the original Renesas 2308-1DCG.