CDC421106RGET Clock Generator IC Equivalent & Substitute Parts

Part Overview

The CDC421106RGET is a Clock Generator IC manufactured by Texas Instruments, operating at 106.25MHz with a 24-VFQFN Exposed Pad package. This part is classified as Obsolete, which necessitates identification of active equivalent and substitute components for ongoing design support and procurement.

The CDC421106RGET provides clock generation functionality with PLL capability, LVCMOS/Crystal input, and LVPECL output in a single-circuit configuration. Due to its obsolete status, active alternatives from the same manufacturer family are available to ensure design continuity and supply chain reliability.

Substiute Parts

CDC421106RGET

Texas InstrumentsIn Stock: 912CDC421106RGET Datasheet

Current PartRFQ

CDC421A106RGET

Texas InstrumentsIn Stock: 912CDC421A106RGET Datasheet

MFR RecommendedRFQ

CDC421A100RGER

Texas InstrumentsIn Stock: 1387CDC421A100RGER Datasheet

Parametric EquivalentRFQ

CDC421A100RGET

Texas InstrumentsIn Stock: 779CDC421A100RGET Datasheet

Parametric EquivalentRFQ

CDC421A106RGER

Texas InstrumentsIn Stock: 1974CDC421A106RGER Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDC421106RGET is determined by the following critical parameters:

Electrical Compatibility Parameters:

• Frequency specification (106.25MHz or lower)
• Input type (LVCMOS, Crystal)
• Output type (LVPECL)
• Supply voltage range (3V ~ 3.6V)
• Operating temperature range (-40°C ~ 85°C)
• PLL functionality (Yes)
• Number of circuits (1)

Mechanical Compatibility Parameters:

• Package type (24-VFQFN Exposed Pad)
• Mounting type (Surface Mount)
• Supplier device package (24-VQFN 4x4)

Compliance Parameters:

• RoHS3 Compliance
• MSL Rating 2 (1 Year)

Substitute parts are grouped into two categories:

1. Direct Functional Equivalent (MFR Recommended): CDC421A106RGET maintains identical electrical and mechanical specifications with Active product status.

2. Parametric Equivalents: CDC421A100RGET and CDC421A100RGER operate at 100MHz maximum frequency, which is lower than the original 106.25MHz specification but compatible with applications not requiring the full frequency range.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: CDC421A106RGET

The CDC421A106RGET is the manufacturer-recommended direct replacement for the obsolete CDC421106RGET. This part maintains identical electrical specifications (106.25MHz frequency, LVCMOS/Crystal input, LVPECL output) and mechanical compatibility (24-VFQFN Exposed Pad package). The CDC421A106RGET holds Active product status, ensuring long-term availability and supply chain support. Both parts are ROHS3 compliant with identical MSL ratings.

Secondary Recommendation: CDC421A106RGER

The CDC421A106RGER provides identical electrical and mechanical specifications to the CDC421A106RGET with Active product status. The primary distinction is packaging format (Tape & Reel). This part is suitable for high-volume production environments requiring automated assembly processes.

Tertiary Recommendation: CDC421A100RGET / CDC421A100RGER

The CDC421A100 series operates at 100MHz maximum frequency, representing a 6.25% reduction from the original 106.25MHz specification. These parts are suitable only for applications where the maximum frequency requirement does not exceed 100MHz. Both variants maintain identical supply voltage, operating temperature, package type, and compliance certifications. Selection between RGET and RGER variants depends on packaging requirements (bulk versus Tape & Reel).

Frequently Asked Questions (FAQ)

Q: Can CDC421A100RGET replace CDC421106RGET in all applications?

A: No. The CDC421A100RGET operates at a maximum frequency of 100MHz, compared to 106.25MHz for the CDC421106RGET. Substitution is valid only for applications where the clock frequency requirement does not exceed 100MHz. Applications requiring 106.25MHz operation must use CDC421A106RGET or CDC421A106RGER.

Q: What is the difference between CDC421A106RGET and CDC421A106RGER?

A: Both parts are electrically and mechanically identical with identical Active product status. The difference is packaging format: RGET is supplied in Tape & Reel (TR) format, while RGER is also supplied in Tape & Reel (TR) format. Selection depends on procurement and assembly process requirements.

Q: Is the CDC421A106RGET a direct pin-for-pin replacement?

A: Yes. The CDC421A106RGET maintains the same 24-VFQFN Exposed Pad package configuration, identical pin count, and identical electrical specifications as the CDC421106RGET. No PCB layout modifications are required.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (CDC421A106RGET, CDC421A106RGER, CDC421A100RGET, CDC421A100RGER) are ROHS3 compliant with MSL Rating 2 (1 Year), matching the original CDC421106RGET compliance status.

Q: Why is CDC421106RGET marked as Obsolete?

A: The CDC421106RGET has been superseded by the CDC421A106 series, which offers improved availability and long-term supply assurance. The CDC421A106RGET is the direct active replacement maintaining identical specifications.

Q: Can I use CDC421A100RGER if my design requires 106.25MHz?

A: No. The CDC421A100RGER maximum frequency specification is 100MHz. Using this part in an application requiring 106.25MHz operation will result in clock frequency below design specification. Use CDC421A106RGET or CDC421A106RGER for 106.25MHz applications.

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

A: MSL (Moisture Sensitivity Level) Rating 2 (1 Year) indicates the component can be exposed to ambient conditions for up to one year before requiring baking prior to reflow soldering. All substitute parts maintain this rating, ensuring compatibility with standard manufacturing processes.