Equivalent & Substitute Parts for 343MIPLFT

Part Overview

The 343MIPLFT is a Clock/Frequency Synthesizer IC manufactured by Renesas Electronics Corporation, part of the VersaClock® series. This 8-SOIC surface mount device provides clock and frequency synthesis functionality with a maximum frequency of 200MHz and operates within a 3.15V to 3.45V supply voltage range. The device features a Phase-Locked Loop (PLL) with programmable input/output ratio capabilities and LVCMOS output configuration.

The 343MIPLFT is classified as an obsolete product. Identifying equivalent and substitute parts is essential for system redesign, production continuation, and long-term supply chain management when original inventory becomes unavailable.

Substiute Parts

343MIPLFT

Renesas Electronics CorporationIn Stock: 979343MIPLFT Datasheet

Current PartRFQ

341MIPLFT

Renesas Electronics CorporationIn Stock: 958341MIPLFT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 343MIPLFT is determined by strict parametric alignment across the following critical categories:

Package and Mechanical Compatibility: The substitute part must use the 8-SOIC (0.154", 3.90mm Width) surface mount package to ensure PCB footprint compatibility and assembly process alignment.

Electrical Specifications: The substitute must maintain identical or compatible supply voltage range (3.15V ~ 3.45V), operating temperature range (-40°C ~ 85°C), and maximum frequency capability (200MHz).

Functional Architecture: The substitute must include PLL functionality, support Clock and Crystal inputs, provide LVCMOS output configuration, and contain a single circuit with multiplier capability.

Manufacturer and Series: Renesas Electronics Corporation VersaClock® series devices are prioritized to maintain design consistency and firmware compatibility.

The 341MIPLFT meets all mechanical and electrical substitution criteria. The primary functional difference is the Input:Output ratio specification (1:1 versus 1:3 on the 343MIPLFT), which reflects different frequency multiplication configurations but does not preclude substitution when system requirements permit ratio adjustment.

Parameter Comparison

Engineering Selection Recommendations

Both the 343MIPLFT and 341MIPLFT are classified as obsolete products within the Renesas VersaClock® series. Selection between these parts depends on system-level frequency multiplication requirements and available inventory.

The 343MIPLFT with 1:3 input-to-output ratio is suitable for applications requiring a 3x frequency multiplication factor. The 341MIPLFT with 1:1 ratio provides unity gain frequency synthesis. Both devices maintain identical electrical specifications, package geometry, and compliance certifications (REACH Unaffected, ECCN EAR99).

For new designs or production continuation, evaluate whether the frequency multiplication ratio can be adjusted through firmware or external clock source modification to accommodate either device. Both parts operate within the same supply voltage and temperature ranges, ensuring thermal and power delivery compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 341MIPLFT directly replace the 343MIPLFT without circuit modification?

A: Both devices share identical package geometry (8-SOIC), supply voltage range (3.15V ~ 3.45V), operating temperature range (-40°C ~ 85°C), and maximum frequency (200MHz). The primary difference is the input-to-output frequency ratio (1:1 versus 1:3). Direct substitution is possible if the system clock frequency requirements can be met with a 1:1 ratio configuration, or if the input clock source is adjusted accordingly.

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

A: Both the 343MIPLFT and 341MIPLFT share identical REACH status (REACH Unaffected), ECCN classification (EAR99), and Moisture Sensitivity Level (MSL 1 - Unlimited). No compliance barriers exist for substitution.

Q: What is the significance of the input-to-output ratio difference?

A: The ratio specification defines the frequency multiplication factor. The 343MIPLFT multiplies the input frequency by 3, while the 341MIPLFT provides 1:1 frequency synthesis. System design must accommodate the selected ratio through appropriate input clock frequency selection or firmware configuration.

Q: Are both parts still available for procurement?

A: Both devices are classified as obsolete. Availability is limited to existing inventory. Current stock levels should be verified with component distributors before design commitment.

Q: Do these parts require different PCB footprints?

A: No. Both devices use the 8-SOIC (0.154", 3.90mm Width) package, ensuring identical PCB footprint compatibility and assembly process requirements.