CDC421100RGER Clock Generator IC Equivalent & Substitute Parts

Part Overview

The CDC421100RGER is a Clock Generator IC manufactured by Texas Instruments, designed for 100MHz clock generation with LVCMOS and Crystal inputs, and LVPECL output. This device is classified as Obsolete, which necessitates identification of active equivalent alternatives for new designs and ongoing production requirements. The part operates within a 3V to 3.6V supply voltage range and is housed in a 24-VFQFN Exposed Pad surface mount package.

Substiute Parts

CDC421100RGER

Texas InstrumentsIn Stock: 1299CDC421100RGER Datasheet

Current PartRFQ

CDC421A100RGER

Texas InstrumentsIn Stock: 1387CDC421A100RGER Datasheet

MFR RecommendedRFQ

CDC421A100RGET

Texas InstrumentsIn Stock: 779CDC421A100RGET Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDC421100RGER is determined by strict equivalence across the following critical parameters:

• Frequency specification: Maximum 100MHz operation
• Input/Output signal types: LVCMOS and Crystal inputs with LVPECL output
• PLL functionality: Integrated Phase-Locked Loop required
• Circuit configuration: Single circuit with 1:1 input-to-output ratio
• Differential signaling: No differential input, Yes differential output
• Supply voltage range: 3V to 3.6V operation
• Operating temperature range: -40°C to 85°C
• Package form factor: 24-VFQFN Exposed Pad (4x4mm)
• Compliance standards: ROHS3 Compliant, REACH Unaffected

The identified substitutes CDC421A100RGER and CDC421A100RGET maintain identical electrical and mechanical specifications while differing in product status and packaging configuration.

Parameter Comparison

Engineering Selection Recommendations

CDC421A100RGER is the primary recommended substitute for CDC421100RGER. Both parts are manufactured by Texas Instruments with identical electrical and mechanical specifications. The CDC421A100RGER carries Active product status, ensuring continued availability and manufacturing support. This part is supplied in Tape & Reel packaging, suitable for automated assembly processes. Current inventory availability is 1338 pieces.

CDC421A100RGET serves as a secondary parametric equivalent with identical functional specifications and Active product status. This part is also supplied in Tape & Reel packaging with current inventory of 742 pieces. Selection between CDC421A100RGER and CDC421A100RGET should be based on supply chain requirements and packaging preferences, as both maintain full electrical and mechanical compatibility.

Both substitutes comply with ROHS3 and REACH requirements, matching the compliance profile of the original CDC421100RGER.

Frequently Asked Questions (FAQ)

Q: Can CDC421A100RGER directly replace CDC421100RGER in existing designs?

A: Yes. CDC421A100RGER maintains identical electrical specifications including 100MHz maximum frequency, LVCMOS/Crystal input, LVPECL output, 3V to 3.6V supply voltage, and -40°C to 85°C operating temperature range. The 24-VFQFN Exposed Pad package is mechanically identical, enabling direct PCB-level substitution.

Q: What is the difference between CDC421A100RGER and CDC421A100RGET?

A: Both parts are parametrically equivalent with identical electrical and mechanical specifications. The difference lies in packaging configuration: CDC421A100RGER is supplied in Tape & Reel format, while CDC421A100RGET is also supplied in Tape & Reel format. Selection should be based on supply availability and procurement requirements.

Q: Why is CDC421100RGER marked as Obsolete?

A: CDC421100RGER has reached end-of-life status. The active equivalents CDC421A100RGER and CDC421A100RGET provide continued access to this clock generator functionality with full manufacturing support from Texas Instruments.

Q: Are there any compliance or certification differences between these parts?

A: No. All three parts maintain identical ROHS3 Compliant and REACH Unaffected status. Moisture Sensitivity Level (MSL) is 2 (1 Year) across all variants.

Q: What is the package form factor for these clock generators?

A: All parts use the 24-VFQFN Exposed Pad package in a 4x4mm form factor, suitable for surface mount assembly on standard PCBs.