CDCR83ADBQ Equivalent & Substitute Parts

Part Overview

The CDCR83ADBQ is a Direct Rambus Clock Generator IC manufactured by Texas Instruments, designed for memory timing applications in RDRAM systems. This device generates a 400MHz clock output from a TTL input signal and is housed in a 24-SSOP surface mount package.

The CDCR83ADBQ carries an Obsolete product status, indicating it is no longer in active production. This necessitates identifying equivalent substitute components that maintain identical electrical and mechanical specifications for continued system support and replacement applications.

Substiute Parts

CDCR83ADBQ

Texas InstrumentsIn Stock: 1726CDCR83ADBQ Datasheet

Current PartRFQ

CDCR83DBQ

Texas InstrumentsIn Stock: 5560CDCR83DBQ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDCR83ADBQ is determined by strict equivalence across the following critical parameters:

• Frequency specification: Maximum 400MHz clock generation capability
• Input/Output configuration: TTL input with clock output, 1:1 ratio
• Supply voltage range: 3.135V ~ 3.465V operation
• Package format: 24-SSOP surface mount package with 0.154" width (3.90mm)
• Temperature range: -40°C to 85°C operating window
• PLL functionality: Integrated Phase-Locked Loop circuit
• Compliance standards: ROHS3 compliance and MSL Level 2 rating

The CDCR83DBQ meets all these criteria and qualifies as a direct substitute for the CDCR83ADBQ.

Parameter Comparison

Engineering Selection Recommendations

The CDCR83DBQ serves as the direct substitute for the CDCR83ADBQ. Both components share identical electrical specifications, package geometry, and compliance certifications. The CDCR83DBQ maintains ROHS3 compliance and MSL Level 2 rating, ensuring compatibility with existing assembly and storage requirements.

The CDCR83ADBQ's Obsolete status contrasts with the CDCR83DBQ's "Not For New Designs" classification. While the CDCR83DBQ is not recommended for new product development, it remains the appropriate replacement for legacy systems requiring the CDCR83ADBQ.

Frequently Asked Questions (FAQ)

Q: Can the CDCR83DBQ directly replace the CDCR83ADBQ in existing designs?

A: Yes. The CDCR83DBQ is electrically and mechanically equivalent to the CDCR83ADBQ. Both devices operate at identical voltage ranges (3.135V ~ 3.465V), frequency specifications (400MHz maximum), and temperature ranges (-40°C ~ 85°C). The 24-SSOP package dimensions are identical, enabling direct PCB substitution.

Q: What is the difference between the CDCR83ADBQ and CDCR83DBQ?

A: The primary difference is product status. The CDCR83ADBQ is classified as Obsolete, while the CDCR83DBQ is classified as Not For New Designs. All electrical and mechanical parameters remain identical between the two part numbers.

Q: Are there any compliance or certification differences?

A: No. Both the CDCR83ADBQ and CDCR83DBQ maintain ROHS3 compliance and carry MSL Level 2 (1 Year) moisture sensitivity ratings. Compliance certifications are equivalent.

Q: What does the 24-SSOP package specification mean?

A: The 24-SSOP (Shrink Small Outline Package) is a surface mount package with 24 pins, 0.154 inches (3.90mm) in width. This package format is identical for both the CDCR83ADBQ and CDCR83DBQ, ensuring mechanical compatibility on PCB layouts.

Q: Can these parts be used interchangeably in production?

A: Yes, for replacement and legacy system applications. Both parts are functionally equivalent and share identical pin configurations, electrical characteristics, and package specifications. No circuit modifications are required for substitution.