CDC2509APWR PLL Clock Driver IC Equivalent & Substitute Parts

Part Overview

The CDC2509APWR is a PLL Clock Driver IC manufactured by Texas Instruments, designed for clock distribution and timing applications requiring LVTTL signal processing. This device features a 1:9 input-to-output ratio with a maximum frequency of 100MHz and operates within a 3V to 3.6V supply voltage range in a 24-TSSOP surface mount package.

The CDC2509APWR is classified as Obsolete, making it necessary to identify functionally equivalent substitute components for new procurement or design continuity. The primary substitute is the CDC2509CPWR, which maintains core functional compatibility while offering enhanced specifications.

Substiute Parts

CDC2509APWR

Texas InstrumentsIn Stock: 3561CDC2509APWR Datasheet

Current PartRFQ

CDC2509CPWR

Texas InstrumentsIn Stock: 6688CDC2509CPWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CDC2509APWR is determined by the following critical parameters:

• Package Compatibility: Both main and substitute parts must use the 24-TSSOP (0.173", 4.40mm Width) surface mount package to ensure PCB layout and assembly compatibility.
• Signal Interface: Input and output signal types must both be LVTTL to maintain electrical compatibility with existing circuit designs.
• Circuit Configuration: Single circuit topology with 1:9 input-to-output ratio must be preserved.
• Supply Voltage: Operating voltage range of 3V to 3.6V must be supported.
• Regulatory Compliance: RoHS3 compliance and MSL rating of 1 ensure environmental and handling compatibility.

The CDC2509CPWR qualifies as a direct substitute based on these parameters. While it offers an enhanced maximum frequency specification (125MHz versus 100MHz) and an extended operating temperature range (0°C to 85°C), these represent improvements that do not compromise backward compatibility in applications designed for the CDC2509APWR.

Parameter Comparison

Engineering Selection Recommendations

The CDC2509CPWR is the qualified substitute for the CDC2509APWR. Both components maintain identical electrical interfaces, package specifications, and regulatory compliance certifications. The CDC2509CPWR provides enhanced performance specifications with a higher maximum frequency rating (125MHz) and extended operating temperature range (0°C to 85°C), making it suitable for applications currently using the CDC2509APWR.

Selection between these parts should be based on product availability and design requirements. The CDC2509APWR is classified as Obsolete, while the CDC2509CPWR carries a "Not For New Designs" status, indicating limited long-term availability for both variants. For new designs requiring PLL clock driver functionality in this specification class, evaluation of current-generation alternatives from Texas Instruments or other manufacturers is recommended based on specific application requirements.

Frequently Asked Questions (FAQ)

Q: Can the CDC2509CPWR directly replace the CDC2509APWR in existing designs?

A: Yes. Both parts share identical package specifications (24-TSSOP), signal interfaces (LVTTL input/output), circuit configuration (1:9 ratio), and supply voltage requirements (3V to 3.6V). The CDC2509CPWR's enhanced frequency and temperature specifications do not introduce incompatibilities with designs specified for the CDC2509APWR.

Q: What are the key differences between CDC2509APWR and CDC2509CPWR?

A: The CDC2509CPWR offers a higher maximum frequency specification (125MHz versus 100MHz) and an extended operating temperature range (0°C to 85°C versus 0°C to 70°C). All other electrical and mechanical parameters remain identical.

Q: Are both parts RoHS compliant?

A: Yes. Both the CDC2509APWR and CDC2509CPWR are ROHS3 compliant with MSL rating of 1 (Unlimited), meeting environmental and handling requirements for industrial and commercial applications.

Q: What is the significance of the product status classifications?

A: The CDC2509APWR is classified as Obsolete, indicating it is no longer in active production. The CDC2509CPWR is classified as "Not For New Designs," indicating limited availability and that it should not be selected for new product development. Both statuses reflect the maturity of this product line.

Q: Are there any packaging or mounting differences between these parts?

A: No. Both parts use identical 24-TSSOP surface mount packaging with 0.173" width and 4.40mm body dimensions. PCB layout and assembly processes remain unchanged between the two variants.