CDCE421Y Clock Generator IC Equivalent & Substitute Parts

Part Overview

The CDCE421Y is a Clock Generator IC manufactured by Texas Instruments, designed for 1.2GHz clock generation applications. This die-sale format component features PLL functionality with LVCMOS/Crystal inputs and LVDS/LVPECL outputs. The part is currently listed as Obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The CDCE421Y base product line remains active through alternative packaging configurations and related variants.

Substiute Parts

CDCE421Y

Texas InstrumentsIn Stock: 1052CDCE421Y Datasheet

Current PartRFQ

CDCE421ARGET

Texas InstrumentsIn Stock: 1330CDCE421ARGET Datasheet

MFR RecommendedRFQ

CDCE421YS

Texas InstrumentsIn Stock: 972CDCE421YS Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CDCE421Y is determined by strict equivalence across the following critical parameters:

• Base product number: CDCE421
• Maximum frequency: 1.2GHz
• PLL functionality: Yes
• Input signal types: LVCMOS, Crystal
• Output signal types: LVDS, LVPECL
• Supply voltage range: 3V ~ 3.6V
• Operating temperature range: -40°C ~ 85°C
• Number of circuits: 1
• Input:Output ratio: 1:1
• Differential input/output configuration: No/Yes
• RoHS3 compliance
• REACH unaffected status

Two substitute parts meet these criteria: CDCE421ARGET (MFR Recommended) and CDCE421YS (Parametric Equivalent). Both maintain identical electrical specifications while differing in packaging format and product lifecycle status.

Parameter Comparison

Engineering Selection Recommendations

CDCE421ARGET is the primary substitute for CDCE421Y applications. This part carries Active product status from Texas Instruments, ensuring long-term availability and supply chain continuity. The 24-VFQFN Exposed Pad package provides a standard surface-mount form factor suitable for production assembly. ROHS3 compliance and REACH unaffected status maintain regulatory alignment with the original part.

CDCE421YS serves as a parametric equivalent for die-level applications where the original die-sale format is required. This part maintains identical electrical specifications and MSL rating but carries Discontinued at DiGi Electronics status, limiting procurement viability for new designs.

For new designs and ongoing production, CDCE421ARGET is the recommended selection based on active product status and standard packaging availability.

Frequently Asked Questions (FAQ)

Q: Can CDCE421ARGET directly replace CDCE421Y in existing designs?

A: CDCE421ARGET maintains all critical electrical parameters (frequency, PLL, input/output types, supply voltage, operating temperature) identical to CDCE421Y. The primary difference is packaging: CDCE421ARGET uses 24-VFQFN Exposed Pad format versus the die-sale format of CDCE421Y. Direct replacement depends on your application's packaging requirements. If your design uses die-level components, CDCE421YS is the appropriate substitute. If your design accommodates standard surface-mount packages, CDCE421ARGET is suitable.

Q: What is the difference between CDCE421ARGET and CDCE421YS?

A: Both parts are parametric equivalents with identical electrical specifications. CDCE421ARGET uses 24-VFQFN Exposed Pad packaging and carries Active product status. CDCE421YS maintains die-sale packaging and is Discontinued at DiGi Electronics. Selection depends on packaging format requirements and supply chain availability.

Q: Are there compliance differences between these parts?

A: All three parts (CDCE421Y, CDCE421ARGET, CDCE421YS) are ROHS3 compliant and REACH unaffected. Moisture sensitivity differs: CDCE421Y and CDCE421YS have MSL 1 (Unlimited), while CDCE421ARGET has MSL 2 (1 Year). This affects storage and handling requirements for CDCE421ARGET.

Q: Why is CDCE421Y listed as Obsolete?

A: CDCE421Y is obsolete, but the CDCE421 base product line remains active through alternative packaging variants. CDCE421ARGET represents the current production form of this clock generator IC.

Q: Can I use CDCE421YS for new production designs?

A: CDCE421YS is not recommended for new production designs due to Discontinued at DiGi Electronics status. CDCE421ARGET is the active substitute for ongoing and new applications.