IDT2308-1DC Equivalent & Substitute Parts

Part Overview

The IDT2308-1DC is a Multiplier, Zero Delay Buffer IC manufactured by Renesas Electronics Corporation, designed for clock/timing applications with a maximum frequency of 133.3MHz. This component operates with LVTTL input/output levels and features a 1:8 input-to-output ratio in a 16-SOIC surface mount package.

The IDT2308-1DC is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades where this legacy device is no longer readily procurable from primary sources.

Substiute Parts

IDT2308-1DC

Renesas Electronics CorporationIn Stock: 4895IDT2308-1DC 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

Substitute parts for the IDT2308-1DC are qualified based on the following critical parameters that determine functional compatibility:

• Package / Case: Identical 16-SOIC (0.154", 3.90mm Width) surface mount package ensures mechanical and electrical pin compatibility
• Voltage - Supply: Matching 3V ~ 3.6V supply voltage range maintains power delivery compatibility
• Input/Output Logic: LVTTL input and output levels ensure signal level compatibility with existing circuitry
• PLL with Bypass: Presence of PLL functionality with bypass capability maintains operational flexibility
• Number of Circuits: Single circuit configuration matches the original design
• Mounting Type: Surface mount compatibility preserves PCB assembly compatibility

The substitute parts identified (CDCVF25081D and CDCVF25081DR) meet all critical compatibility parameters. These Texas Instruments Clock/Timing components operate within the same supply voltage range, use identical packaging, and maintain LVTTL signal compatibility. While the substitute parts feature higher maximum frequency ratings (200MHz) and extended operating temperature ranges, these represent functional enhancements rather than incompatibilities.

Parameter Comparison

Engineering Selection Recommendations

CDCVF25081D is suitable for applications requiring tube packaging and standard commercial availability. This part is actively manufactured by Texas Instruments and carries ROHS3 compliance certification, meeting modern environmental and regulatory requirements. The extended operating temperature range (-40°C ~ 85°C) provides broader thermal performance compared to the original IDT2308-1DC specification.

CDCVF25081DR is the preferred selection for high-volume production environments. This variant is supplied in Cut Tape and Digi-Reel packaging formats, optimizing automated assembly processes. ROHS3 compliance and active product status ensure long-term supply chain stability and regulatory alignment. The identical electrical specifications and package footprint to CDCVF25081D provide functional equivalence with enhanced logistics support for manufacturing operations.

Both substitute parts eliminate the obsolescence risk associated with the IDT2308-1DC while providing superior compliance certifications and extended temperature operating ranges.

Frequently Asked Questions (FAQ)

Q: Can CDCVF25081D and CDCVF25081DR be used interchangeably with IDT2308-1DC?

A: Yes. Both parts share identical electrical specifications, package geometry, and pin configuration. The primary difference between CDCVF25081D and CDCVF25081DR is packaging format (tube versus tape & reel), not electrical performance.

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

A: The IDT2308-1DC operates at a 1:8 ratio, while the substitute parts operate at 2:8. Both configurations deliver the same output frequency multiplication factor relative to their respective input requirements. Circuit design integration must account for the input frequency specifications of each device.

Q: Are the substitute parts compatible with existing PCB designs?

A: Yes. Both CDCVF25081D and CDCVF25081DR use the identical 16-SOIC (0.154", 3.90mm Width) package footprint. Direct PCB layout compatibility is maintained without redesign requirements.

Q: What are the compliance advantages of the substitute parts?

A: The CDCVF25081D and CDCVF25081DR carry ROHS3 compliance certification, whereas the IDT2308-1DC is RoHS non-compliant. This compliance upgrade aligns with current environmental regulations and supply chain requirements for new production.

Q: Do the substitute parts support the same supply voltage range?

A: Yes. All three parts operate within the 3V ~ 3.6V supply voltage range, ensuring direct compatibility with existing power delivery systems.

Q: What is the advantage of the extended operating temperature range in the substitute parts?

A: The substitute parts operate from -40°C ~ 85°C compared to the original 0°C ~ 70°C range. This extended specification provides greater thermal margin for applications in demanding environmental conditions.