CDCV857DGG PLL Clock Driver IC Equivalent & Substitute Parts

Part Overview

The CDCV857DGG is a PLL Clock Driver IC manufactured by Texas Instruments, designed for clock distribution and timing applications with a maximum frequency of 200MHz. This component features a 1:10 input-to-output ratio with differential input and output capabilities, operating from a 2.3V to 2.7V supply voltage. The part is classified as Obsolete, making identification of compatible substitute components essential for ongoing system support and new design considerations. The CDCV857DGG is packaged in a 48-TFSOP (0.240", 6.10mm Width) surface mount configuration and maintains ROHS3 compliance with MSL Level 2 moisture sensitivity rating.

Substiute Parts

CDCV857DGG

Texas InstrumentsIn Stock: 1086CDCV857DGG Datasheet

Current PartRFQ

CDCV857ADGG

Texas InstrumentsIn Stock: 1281CDCV857ADGG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CDCV857DGG is determined by strict adherence to the following critical parameters:

Mandatory Matching Parameters:

• Package / Case: 48-TFSOP (0.240", 6.10mm Width) surface mount configuration
• Ratio - Input:Output: 1:10
• Differential - Input:Output: Yes/Yes
• Voltage - Supply: 2.3V ~ 2.7V
• Operating Temperature: 0°C ~ 85°C
• Number of Circuits: 1
• PLL with Bypass functionality

Allowable Variation Parameters:

• Frequency - Max: May vary within application requirements
• Product Status: Obsolete or Not For New Designs acceptable for legacy system support
• Inventory availability and packaging format (Tube vs. standard)

The CDCV857ADGG qualifies as a parametric equivalent based on matching all mandatory electrical and mechanical specifications, with the primary distinction being a reduced maximum frequency rating of 180MHz compared to the original 200MHz specification.

Parameter Comparison

Engineering Selection Recommendations

For Legacy System Support and Maintenance: The CDCV857ADGG serves as a direct functional substitute for the obsolete CDCV857DGG in applications where the maximum operating frequency does not exceed 180MHz. Both components maintain identical electrical characteristics across supply voltage, operating temperature range, and signal integrity specifications (differential input/output configuration). The 48-TFSOP package footprint and pinout compatibility ensure seamless PCB integration without layout modifications.

Compliance and Certification Considerations: Both the CDCV857DGG and CDCV857ADGG maintain ROHS3 compliance and identical MSL Level 2 ratings, ensuring equivalent handling and storage requirements. The REACH Unaffected status applies uniformly across both variants, supporting regulatory compliance in manufacturing and distribution environments.

Product Status Impact: The CDCV857DGG's Obsolete classification necessitates substitute identification for ongoing procurement. The CDCV857ADGG's Not For New Designs status indicates limited future availability but remains suitable for legacy system repairs and field replacements where frequency requirements align with the 180MHz maximum specification.

Frequently Asked Questions (FAQ)

Q: Can the CDCV857ADGG directly replace the CDCV857DGG in existing designs? A: Yes, provided the application's maximum operating frequency does not exceed 180MHz. All other electrical parameters, package configuration, and functional specifications are identical. PCB layout and pinout compatibility require no modification.

Q: What is the primary difference between these two parts? A: The maximum frequency specification differs: CDCV857DGG operates to 200MHz, while CDCV857ADGG operates to 180MHz. All other parameters—supply voltage, temperature range, package type, differential signaling, and 1:10 ratio—remain unchanged.

Q: Are there any handling or storage differences between these components? A: No. Both components share identical MSL Level 2 ratings, requiring equivalent moisture control and storage conditions (1 Year shelf life under specified humidity levels).

Q: Does the package footprint differ between these parts? A: No. Both components use the 48-TFSOP (0.240", 6.10mm Width) surface mount package with identical pinout and mechanical dimensions.

Q: What compliance certifications apply to both parts? A: Both the CDCV857DGG and CDCV857ADGG maintain ROHS3 compliance and REACH Unaffected status, supporting equivalent regulatory requirements across manufacturing and distribution.

Q: Can I use the CDCV857ADGG in a new design? A: The CDCV857ADGG carries a Not For New Designs status, indicating limited future availability. For new designs, consultation with Texas Instruments regarding current-generation PLL Clock Driver alternatives is recommended based on specific frequency and performance requirements.