Equivalent & Substitute Parts for 23S08-1DCG

Part Overview

The Renesas Electronics 23S08-1DCG is a Clock Multiplier with Zero Delay Buffer IC designed for 133.3MHz operation in a 16-SOIC surface mount package. This component has reached obsolete product status, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs. The part operates with LVTTL input and CMOS/LVTTL output, featuring a 1:8 input-to-output ratio with integrated PLL and bypass capability.

Substiute Parts

23S08-1DCG

Renesas Electronics CorporationIn Stock: 95323S08-1DCG 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

Substitute parts for the 23S08-1DCG are qualified based on the following critical parameters that determine functional compatibility:

Mandatory Compatibility Criteria:

• Package / Case: 16-SOIC (0.154", 3.90mm Width) — identical footprint for direct PCB replacement
• Voltage - Supply: 3V ~ 3.6V — matching supply voltage range
• Input Type: LVTTL — compatible signal input standard
• Output Type: LVTTL — compatible signal output standard
• Mounting Type: Surface Mount — same assembly method
• Number of Circuits: 1 — single circuit configuration
• PLL with Bypass: Yes — required functional feature

Allowable Parameter Variations:

• Frequency - Max: Substitute parts may exceed the original 133.3MHz specification, provided the design does not require operation above this frequency
• Ratio - Input:Output: Substitute parts with 2:8 ratio are acceptable when the application requires higher multiplication factors
• Operating Temperature: Substitute parts with extended temperature range (-40°C ~ 85°C) provide broader operational capability
• Product Status: Active status substitutes are preferred for long-term availability
• MSL Rating: Lower MSL values (1 vs. 3) indicate improved moisture tolerance

The Texas Instruments CDCVF25081D and CDCVF25081DR meet all mandatory compatibility criteria while offering enhanced performance specifications and active product status.

Parameter Comparison

Engineering Selection Recommendations

Both CDCVF25081D and CDCVF25081DR are qualified substitutes for the obsolete 23S08-1DCG based on electrical and mechanical compatibility. Selection between these two options depends on procurement and inventory requirements:

CDCVF25081D — Supplied in Tube packaging. Suitable for applications requiring smaller order quantities or direct component handling.

CDCVF25081DR — Supplied in Cut Tape (CT) and Digi-Reel® format. Recommended for high-volume production environments and automated assembly processes. This variant offers superior inventory management through reel-based distribution.

Both substitutes provide:

• Identical 16-SOIC footprint for direct PCB replacement without layout modification
• Matching 3V ~ 3.6V supply voltage compatibility
• LVTTL input/output signal compatibility
• Active product status ensuring long-term availability and supply chain stability
• ROHS3 compliance and improved MSL rating (1 vs. 3) for enhanced moisture tolerance
• Extended operating temperature range (-40°C ~ 85°C) providing broader environmental capability

The 200MHz maximum frequency specification of both substitutes exceeds the original 133.3MHz requirement, ensuring performance headroom for existing designs. The 2:8 input-to-output ratio accommodates higher multiplication factors if required by future design iterations.

Frequently Asked Questions (FAQ)

Q: Can CDCVF25081D and CDCVF25081DR be used interchangeably in the same design?

A: Yes. Both parts are electrically and mechanically identical. The difference is packaging format only. CDCVF25081D uses Tube packaging while CDCVF25081DR uses Cut Tape and Digi-Reel format. Selection depends on assembly process and procurement volume requirements.

Q: What is the primary difference between the 23S08-1DCG and its substitutes?

A: The main differences are product status (obsolete vs. active), maximum frequency (133.3MHz vs. 200MHz), operating temperature range (0°C ~ 70°C vs. -40°C ~ 85°C), and MSL rating (3 vs. 1). All parts share identical package, supply voltage, and signal compatibility.

Q: Will the higher 200MHz frequency specification of the substitutes cause compatibility issues?

A: No. The substitute parts are backward compatible. A 200MHz-rated device operates correctly in applications designed for 133.3MHz operation. The higher frequency rating provides performance margin without affecting existing circuit behavior.

Q: Are the CDCVF25081D and CDCVF25081DR suitable for extended temperature applications?

A: Yes. Both substitutes operate across -40°C ~ 85°C, compared to the original part's 0°C ~ 70°C range. This extended capability supports industrial and automotive applications requiring broader temperature tolerance.

Q: What does the improved MSL rating (1 vs. 3) mean for manufacturing?

A: MSL 1 (Unlimited) indicates superior moisture resistance compared to MSL 3 (168 Hours). The substitute parts tolerate longer exposure to humid conditions before soldering, reducing risk of moisture-related defects during storage and assembly.

Q: Is PCB layout modification required when substituting these parts?

A: No. Both substitute parts use the identical 16-SOIC (0.154", 3.90mm Width) package. Direct footprint compatibility allows component replacement without PCB redesign.

Q: Are both substitutes ROHS3 compliant?

A: Yes. CDCVF25081D and CDCVF25081DR are both ROHS3 compliant, matching the compliance status of the original 23S08-1DCG.