CDCV857BDGGR PLL Clock Driver IC Equivalent & Substitute Parts

Part Overview

The CDCV857BDGGR is a PLL Clock Driver IC manufactured by Texas Instruments, designed for clock distribution and timing applications. This device features a 1:10 input-to-output ratio with differential input and output capabilities, operating at a maximum frequency of 200MHz. The part is classified as Obsolete, making identification of compatible substitute components essential for ongoing system support and procurement planning.

Substiute Parts

CDCV857BDGGR

Texas InstrumentsIn Stock: 18475CDCV857BDGGR Datasheet

Current PartRFQ

CDCV857ADGGR

Texas InstrumentsIn Stock: 19818CDCV857ADGGR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CDCV857BDGGR are identified based on the following critical parameters that determine functional compatibility:

• Package / Case: 48-TFSOP (0.240", 6.10mm Width) — identical physical footprint required for PCB compatibility
• Voltage - Supply: 2.3V ~ 2.7V — matching supply voltage range for circuit integration
• Operating Temperature: 0°C ~ 85°C — identical thermal operating range
• Mounting Type: Surface Mount — consistent assembly process requirements
• Input/Output Configuration: Clock input with Clock output, differential signal support
• Ratio - Input:Output: 1:10 — functional frequency multiplication ratio
• PLL with Bypass: Yes — required functional feature

The CDCV857ADGGR qualifies as a parametric equivalent based on these core electrical and mechanical specifications. The primary difference is the maximum frequency rating (180MHz vs. 200MHz), which represents a reduced performance specification while maintaining all other critical parameters.

Parameter Comparison

Engineering Selection Recommendations

The CDCV857ADGGR serves as a direct parametric substitute for the CDCV857BDGGR in applications where the maximum frequency requirement does not exceed 180MHz. Both parts maintain identical electrical characteristics across supply voltage, operating temperature range, and signal configuration parameters. Both components are ROHS3 compliant and carry equivalent moisture sensitivity ratings.

Selection between these parts should be based on application frequency requirements. The CDCV857BDGGR supports operation up to 200MHz, while the CDCV857ADGGR is rated to 180MHz. The CDCV857ADGGR carries a "Not For New Designs" status, indicating it is suitable for legacy system support and replacement applications only.

Frequently Asked Questions (FAQ)

Q: Can the CDCV857ADGGR replace the CDCV857BDGGR in all applications?

A: The CDCV857ADGGR is compatible with applications operating at frequencies up to 180MHz. Applications requiring operation above 180MHz and up to 200MHz require the CDCV857BDGGR specification.

Q: Are the package dimensions identical between these parts?

A: Yes. Both the CDCV857BDGGR and CDCV857ADGGR use the 48-TFSOP package with 0.240" width and 6.10mm dimensions, ensuring identical PCB footprint compatibility.

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

A: The CDCV857BDGGR is classified as Obsolete, while the CDCV857ADGGR is classified as Not For New Designs. Both statuses indicate limited availability for new procurement. The CDCV857ADGGR may have slightly better availability for legacy system support.

Q: Do these parts require different supply voltage configurations?

A: No. Both parts operate within the identical supply voltage range of 2.3V to 2.7V and require no circuit modifications for voltage compatibility.

Q: Are there any thermal operating range differences?

A: No. Both parts operate across the identical temperature range of 0°C to 85°C.