CDCFR83DBQRG4 Equivalent & Substitute Parts

Part Overview

The CDCFR83DBQRG4 is a Memory RDRAM Clock/Frequency Generator IC manufactured by Texas Instruments, operating at a maximum frequency of 533MHz with a single output. This device is designed for memory clock generation applications requiring precise timing in RDRAM systems. The part is currently discontinued at DiGi Electronics, making identification of suitable substitute components essential for ongoing system support and procurement planning.

Substiute Parts

CDCFR83DBQRG4

Texas InstrumentsIn Stock: 823CDCFR83DBQRG4 Datasheet

Current PartRFQ

CDCFR83DBQR

Texas InstrumentsIn Stock: 13432CDCFR83DBQR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDCFR83DBQRG4 is determined by strict equivalence across the following critical parameters:

• Frequency Specification: Maximum operating frequency of 533MHz
• Supply Voltage Range: 3.135V ~ 3.465V
• Package Type: 24-SSOP surface mount configuration
• Functional Architecture: Single-output clock generator with PLL and 1:1 input-to-output ratio
• Operating Temperature Range: -40°C ~ 85°C
• Compliance Standards: ROHS3 Compliant, REACH Unaffected status
• Moisture Sensitivity: MSL 2 (1 Year)

The CDCFR83DBQR variant meets all these criteria and is classified as a manufacturer-recommended substitute. Both parts share the same base product number (CDCFR83) and are functionally equivalent for Memory RDRAM clock generation applications.

Parameter Comparison

Engineering Selection Recommendations

The CDCFR83DBQR is the manufacturer-recommended substitute for the CDCFR83DBQRG4. Both components are manufactured by Texas Instruments and maintain identical electrical and mechanical specifications across all critical parameters. The primary distinction is product status: the CDCFR83DBQRG4 is discontinued, while the CDCFR83DBQR is designated as Last Time Buy with significantly higher inventory availability (13,400 pcs vs. 738 pcs).

Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for applications requiring environmental compliance. The packaging difference (Tape & Reel for the substitute) does not affect functional compatibility and is a standard procurement variation for high-volume applications.

Frequently Asked Questions (FAQ)

Q: Are CDCFR83DBQRG4 and CDCFR83DBQR electrically identical?

A: Yes. Both components operate at 533MHz maximum frequency, require 3.135V ~ 3.465V supply voltage, and function across the -40°C ~ 85°C temperature range. All electrical parameters are equivalent.

Q: Can CDCFR83DBQR be used as a direct replacement in existing designs?

A: Yes. The CDCFR83DBQR is pin-compatible and functionally equivalent. The 24-SSOP package dimensions are identical, and the device operates with the same 1:1 input-to-output ratio and PLL architecture.

Q: What is the difference between the packaging designations?

A: The main part number does not specify packaging format, while the substitute is supplied in Tape & Reel (TR) configuration. This is a standard procurement format for surface mount components and does not affect electrical performance or board-level compatibility.

Q: Are both parts compliant with current environmental standards?

A: Yes. Both CDCFR83DBQRG4 and CDCFR83DBQR are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: Why is the CDCFR83DBQRG4 discontinued?

A: Product discontinuation is a manufacturer decision typically driven by market demand and product lifecycle management. The CDCFR83DBQR remains available as the active equivalent for ongoing procurement.