CDCVF857RTBR PLL Clock Driver Equivalent & Substitute Parts

Part Overview

The CDCVF857RTBR is a PLL Clock Driver IC manufactured by Texas Instruments, designed for high-speed clock distribution applications with a maximum frequency of 220MHz. This component features differential SSTL-2 input and output, operates within a 2.3V to 2.7V supply voltage range, and is housed in a 40-VFQFN exposed pad package.

The CDCVF857RTBR is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications currently utilizing this component.

Substiute Parts

CDCVF857RTBR

Texas InstrumentsIn Stock: 1135CDCVF857RTBR Datasheet

Current PartRFQ

CDCVF857RHAT

Texas InstrumentsIn Stock: 1689CDCVF857RHAT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CDCVF857RTBR are identified based on strict parametric equivalence across the following critical criteria:

• Functional Type: PLL Clock Driver with bypass capability
• Frequency Specification: Maximum 220MHz operation
• Signal Interface: SSTL-2 differential input and output
• Multiplication Ratio: 2:11 input-to-output ratio
• Supply Voltage: 2.3V to 2.7V operating range
• Package Compatibility: 40-VFQFN exposed pad (6x6mm)
• Thermal Range: -40°C to 85°C operating temperature
• Moisture Sensitivity: MSL 3 (168 Hours)

The CDCVF857RHAT meets all parametric requirements for direct substitution with the CDCVF857RTBR. Both parts share identical electrical specifications, package geometry, and thermal characteristics. The primary distinction is packaging format and product status.

Parameter Comparison

Engineering Selection Recommendations

The CDCVF857RHAT is the direct parametric equivalent for the CDCVF857RTBR. All electrical, thermal, and mechanical specifications are identical, ensuring functional compatibility in existing circuit designs.

Product Status Consideration: The CDCVF857RTBR is obsolete, while the CDCVF857RHAT is active. For new designs or long-term supply requirements, the CDCVF857RHAT is the appropriate selection.

Compliance Consideration: The CDCVF857RHAT is ROHS3 compliant, whereas the CDCVF857RTBR is RoHS non-compliant. Applications subject to RoHS regulations must use the CDCVF857RHAT.

Packaging Consideration: The CDCVF857RTBR is supplied in bulk packaging, while the CDCVF857RHAT is supplied in Tape & Reel format. Tape & Reel packaging is standard for automated assembly processes and provides superior component protection during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can the CDCVF857RHAT be used as a direct replacement for the CDCVF857RTBR?

A: Yes. The CDCVF857RHAT is a parametric equivalent with identical electrical specifications, frequency range, signal interface, supply voltage, operating temperature range, and package geometry. No circuit modifications are required.

Q: What is the difference between the CDCVF857RTBR and CDCVF857RHAT?

A: The primary differences are product status (obsolete vs. active), RoHS compliance (non-compliant vs. ROHS3 compliant), and packaging format (bulk vs. Tape & Reel). All functional and electrical parameters are identical.

Q: Why is the CDCVF857RTBR classified as obsolete?

A: Obsolescence is determined by manufacturer discontinuation. The CDCVF857RHAT represents the current active equivalent from Texas Instruments.

Q: Are there any pin-to-pin compatibility concerns?

A: No. Both parts use the 40-VFQFN exposed pad package with identical pinout and signal assignments.

Q: What is the significance of ROHS3 compliance on the CDCVF857RHAT?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements. This is mandatory for applications in regulated markets and is recommended for all new designs.

Q: Does the Tape & Reel packaging of the CDCVF857RHAT affect circuit performance?

A: No. Packaging format does not affect electrical performance. Tape & Reel is the standard format for automated assembly and provides improved component protection.

Q: What is the MSL rating and why does it matter?

A: Both parts have MSL 3 (168 Hours), indicating they can be exposed to moisture for up to 168 hours at 85°C and 85% relative humidity before baking is required. This specification is critical for storage, handling, and assembly planning.