CDCV857AGQLR Equivalent & Substitute Parts

Part Overview

The CDCV857AGQLR is a PLL Clock Driver IC manufactured by Texas Instruments, designed for high-speed clock distribution applications with a maximum frequency of 180MHz. This device features a 1:10 input-to-output ratio with differential input and output capabilities, operating from a 2.3V to 2.7V supply voltage in a 56-VFBGA package.

The CDCV857AGQLR is classified as obsolete. Identifying qualified substitute parts is essential for design continuity, procurement planning, and system reliability in applications where this component is specified or currently deployed.

Substiute Parts

CDCV857AGQLR

Texas InstrumentsIn Stock: 1937CDCV857AGQLR Datasheet

Current PartRFQ

95V2F857AHLFT

Renesas Electronics CorporationIn Stock: 1534495V2F857AHLFT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CDCV857AGQLR is determined by the following critical parameters:

Core Functional Requirements:

• PLL Clock Driver capability with bypass functionality
• 1:10 input-to-output ratio
• Differential input and output signal support
• Maximum frequency rating of 180MHz or higher
• Supply voltage range: 2.3V ~ 2.7V
• Operating temperature range: 0°C ~ 85°C
• Surface mount packaging in 56-pin BGA configuration

Compliance & Certification:

• ROHS3 compliance
• REACH unaffected status
• EAR99 export classification

The 95V2F857AHLFT from Renesas Electronics Corporation qualifies as a manufacturer-recommended substitute. While this device is optimized for DDR memory clock buffering applications and features a higher maximum frequency (233MHz), it maintains compatibility across all critical electrical parameters, supply voltage specifications, operating temperature range, and regulatory compliance requirements. The package footprint (56-CABGA) is mechanically compatible with the original 56-VFBGA specification.

Parameter Comparison

Engineering Selection Recommendations

The 95V2F857AHLFT is designated as the manufacturer-recommended substitute for the obsolete CDCV857AGQLR. Selection of this substitute is supported by the following factors:

Regulatory Compliance: Both devices maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity in applications subject to environmental restrictions.

Supply Continuity: The substitute is classified as active product status with 15,300 units in stock, providing immediate procurement availability compared to the obsolete original part.

Electrical Compatibility: The substitute maintains identical supply voltage specifications (2.3V ~ 2.7V), operating temperature range (0°C ~ 85°C), and input-to-output ratio (1:10). The higher maximum frequency rating (233MHz versus 180MHz) provides additional performance margin without introducing incompatibility.

Packaging: The 56-TFBGA package is mechanically compatible with the original 56-VFBGA specification, supporting direct board-level substitution without layout redesign.

Moisture Sensitivity: The substitute features MSL rating 1 (unlimited shelf life) compared to the original MSL rating 2 (1 year), reducing storage and handling constraints.

Frequently Asked Questions (FAQ)

Q: Can the 95V2F857AHLFT directly replace the CDCV857AGQLR on existing PCBs?

A: Yes. Both devices use mechanically compatible 56-pin BGA packages with identical pin pitch and footprint dimensions. No PCB layout modifications are required for physical substitution.

Q: What is the significance of the differential input difference between these parts?

A: The CDCV857AGQLR features differential input capability, while the 95V2F857AHLFT accepts LVCMOS input. Applications requiring differential clock inputs must evaluate signal conditioning requirements. The substitute's LVCMOS input may require interface modification depending on the clock source characteristics.

Q: Why does the substitute have a higher maximum frequency rating?

A: The 95V2F857AHLFT is optimized for DDR memory applications, which typically operate at higher clock frequencies. The 233MHz maximum rating exceeds the original 180MHz specification, providing performance headroom. This does not create incompatibility; systems designed for 180MHz operation remain fully functional with the higher-rated substitute.

Q: Are there supply voltage or temperature range differences?

A: No. Both devices operate identically across the 2.3V to 2.7V supply range and 0°C to 85°C temperature range. No power supply or thermal management modifications are necessary.

Q: What is the advantage of the improved MSL rating on the substitute?

A: The 95V2F857AHLFT carries MSL rating 1 (unlimited shelf life) versus MSL rating 2 (1 year) on the original. This reduces moisture absorption risk during storage and extends component usability without requiring special handling or baking procedures.

Q: Is the substitute available in production quantities?

A: Yes. The 95V2F857AHLFT is classified as active product with 15,300 units currently in stock, ensuring reliable procurement for volume production and ongoing support.