LFEC33E-3FN484C Equivalent & Substitute Parts

Part Overview

The LFEC33E-3FN484C is an EC series Field Programmable Gate Array (FPGA) manufactured by Lattice Semiconductor Corporation, featuring 360 I/O pins, 32,800 logic elements, and 434,176 total RAM bits in a 484-BBGA package. This device is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

LFEC33E-3FN484C

Lattice Semiconductor CorporationIn Stock: 931LFEC33E-3FN484C Datasheet

Current PartRFQ

LFE2-35E-5FN484C

Lattice Semiconductor CorporationIn Stock: 9325LFE2-35E-5FN484C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LFEC33E-3FN484C is determined by the following critical parameters:

Package Compatibility: Both the main part and substitute must use the 484-BBGA (23x23) package to ensure mechanical and electrical compatibility with existing PCB layouts and socket designs.

Electrical Specifications: Supply voltage range (1.14V ~ 1.26V) and operating temperature range (0°C ~ 85°C) must be maintained or exceeded to ensure functional equivalence in the target application.

I/O Pin Count: The number of I/O pins (360 for the main part) represents a critical design constraint. Substitute parts must provide equivalent or greater I/O capacity to maintain signal routing compatibility.

Logic Capacity: Logic element count (32,800) and RAM capacity (434,176 bits) define the computational and storage resources available. Substitutes must meet or exceed these specifications to support the original design's functional requirements.

Mounting and Environmental Compliance: Surface mount technology and moisture sensitivity level (MSL 3) must be preserved. REACH and ECCN classifications ensure regulatory and export compliance continuity.

Parameter Comparison

Engineering Selection Recommendations

The LFE2-35E-5FN484C serves as the primary substitute for the obsolete LFEC33E-3FN484C. Both devices share identical package geometry (484-BBGA), electrical operating parameters (1.14V ~ 1.26V supply, 0°C ~ 85°C operating range), and environmental classifications (MSL 3, ECCN 3A991D, HTSUS 8542.39.0001).

The LFE2-35E-5FN484C offers the advantage of active product status, ensuring continued availability and manufacturing support. This substitute maintains regulatory compliance through identical REACH and export classification codes.

Design considerations must account for the following parameter differences: the LFE2-35E-5FN484C provides 331 I/O pins (versus 360 on the main part), 32,000 logic elements (versus 32,800), and 339,968 RAM bits (versus 434,176). These reductions require design verification to confirm functional compatibility within the target application's resource requirements.

Frequently Asked Questions (FAQ)

Q: Can the LFE2-35E-5FN484C directly replace the LFEC33E-3FN484C in existing designs?

A: Direct replacement requires design verification. While both devices use the 484-BBGA package and share identical electrical operating parameters, the substitute provides fewer I/O pins (331 vs. 360), logic elements (32,000 vs. 32,800), and RAM capacity (339,968 vs. 434,176 bits). PCB layout compatibility is maintained through identical package geometry, but functional compatibility depends on whether the design utilizes the full resource capacity of the original part.

Q: Are the supply voltage and operating temperature ranges identical?

A: Yes. Both the LFEC33E-3FN484C and LFE2-35E-5FN484C operate at 1.14V ~ 1.26V supply voltage and 0°C ~ 85°C junction temperature range, ensuring electrical compatibility in the target application environment.

Q: What is the significance of the product status difference?

A: The LFEC33E-3FN484C is classified as obsolete, indicating discontinued manufacturing and limited availability. The LFE2-35E-5FN484C maintains active product status, ensuring ongoing manufacturing support, availability, and technical documentation updates from Lattice Semiconductor Corporation.

Q: Are moisture sensitivity levels equivalent?

A: Yes. Both devices carry MSL 3 classification (168 hours), requiring identical handling, storage, and reflow procedures during assembly and rework operations.

Q: Do both parts maintain the same regulatory compliance?

A: Yes. Both devices share identical ECCN (3A991D) and HTSUS (8542.39.0001) classifications, ensuring equivalent export control and tariff compliance for international distribution and supply chain management.