NBC12429AFN PLL Clock Generator IC - Equivalent & Substitute Parts

Part Overview

The NBC12429AFN is a PLL Clock Generator IC manufactured by onsemi, designed for 400MHz clock generation applications with PECL output. This device features a single circuit configuration with 1:1 input-to-output ratio and operates across a supply voltage range of 3.135V to 5.25V. The part is classified as obsolete, which necessitates identification of active equivalent components for new designs and ongoing production requirements.

Substiute Parts

NBC12429AFN

onsemiIn Stock: 862NBC12429AFN Datasheet

Current PartRFQ

NBC12429AFNG

onsemiIn Stock: 1235NBC12429AFNG Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The NBC12429AFNG qualifies as a direct substitute for the NBC12429AFN based on the following critical parameters:

Electrical Compatibility:

• Identical maximum frequency specification: 400MHz
• Matching input type: Crystal
• Matching output type: PECL
• Identical number of circuits: 1
• Identical input-to-output ratio: 1:1
• Identical supply voltage range: 3.135V ~ 5.25V
• Identical operating temperature range: -40°C ~ 85°C

Mechanical Compatibility:

• Identical package type: 28-LCC (J-Lead)
• Identical supplier device package: 28-PLCC (11.51x11.51)
• Identical mounting type: Surface Mount

Status Advantage:

• NBC12429AFNG carries Active product status, ensuring continued availability and support
• NBC12429AFNG meets ROHS3 compliance requirements

Parameter Comparison

Engineering Selection Recommendations

The NBC12429AFNG is the direct functional equivalent of the NBC12429AFN. Selection of the NBC12429AFNG is appropriate for applications requiring:

• Continued component availability and long-term supply assurance
• Compliance with ROHS3 environmental regulations
• Identical electrical and mechanical performance characteristics

The transition from NBC12429AFN to NBC12429AFNG involves no changes to circuit design, PCB layout, or system integration. Both devices operate identically within the specified electrical parameters and occupy the same physical footprint.

Frequently Asked Questions (FAQ)

Q: Can NBC12429AFNG be used as a direct replacement for NBC12429AFN?

A: Yes. The NBC12429AFNG is electrically and mechanically identical to the NBC12429AFN across all functional parameters: frequency, input/output types, supply voltage, operating temperature, and package configuration.

Q: What is the difference between NBC12429AFN and NBC12429AFNG?

A: The primary differences are product status and regulatory compliance. NBC12429AFNG is an active product with ROHS3 compliance, while NBC12429AFN is obsolete and RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Are there any PCB layout modifications required when switching to NBC12429AFNG?

A: No. Both parts use the identical 28-LCC (J-Lead) package with matching pin configurations and physical dimensions (11.51x11.51mm). No PCB redesign is necessary.

Q: What is the MSL difference between these parts?

A: NBC12429AFN has MSL 1 (Unlimited moisture exposure), while NBC12429AFNG has MSL 3 (168 hours maximum). Standard moisture control procedures during storage and assembly are required for NBC12429AFNG.

Q: Is NBC12429AFNG suitable for new designs?

A: Yes. NBC12429AFNG is the recommended choice for new designs due to its active product status, ROHS3 compliance, and guaranteed long-term availability.