LFEC15E-5FN484C Equivalent & Substitute Parts

Part Overview

The LFEC15E-5FN484C is an EC series Field Programmable Gate Array (FPGA) manufactured by Lattice Semiconductor Corporation, featuring 352 I/O pins and 15,400 logic elements in a 484-BBGA package. This device is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The ECP2 series provides a direct functional alternative with enhanced logic capacity and active product status.

Substiute Parts

LFEC15E-5FN484C

Lattice Semiconductor CorporationIn Stock: 1174LFEC15E-5FN484C Datasheet

Current PartRFQ

LFE2-20E-5FN484C

Lattice Semiconductor CorporationIn Stock: 1531LFE2-20E-5FN484C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LFEC15E-5FN484C is determined by the following critical parameters:

• Package Compatibility: Both main and substitute parts use the 484-BBGA (23x23) package, ensuring mechanical and electrical pin compatibility
• Supply Voltage Range: Identical voltage specification (1.14V ~ 1.26V) allows direct power supply integration
• Operating Temperature Range: Matching thermal specification (0°C ~ 85°C) ensures equivalent thermal performance
• Mounting Type: Both devices are surface mount, maintaining assembly process compatibility
• I/O Pin Count: The substitute part provides 331 I/O pins versus 352 on the main part, representing a reduction in available I/O resources
• Logic Capacity: The substitute part offers 21,000 logic elements versus 15,400, providing increased computational capacity
• RAM Capacity: The substitute part provides 282,624 RAM bits versus 358,400, representing a reduction in embedded memory

The LFE2-20E-5FN484C qualifies as a substitute based on matching package, voltage, temperature, and mounting specifications, while offering enhanced logic resources and active product status.

Parameter Comparison

Engineering Selection Recommendations

The LFE2-20E-5FN484C is the qualified substitute for the obsolete LFEC15E-5FN484C based on the following engineering criteria:

• Product Status: The substitute part maintains active product status, ensuring long-term availability and manufacturing support
• Regulatory Compliance: Both parts share identical ECCN (3A991D) and HTSUS (8542.39.0001) classifications, maintaining export and tariff compliance
• Package Equivalence: Identical 484-BBGA package specifications ensure direct PCB layout compatibility without redesign
• Electrical Specifications: Matching supply voltage and operating temperature ranges eliminate power supply and thermal management modifications
• Moisture Sensitivity: Identical MSL rating (3, 168 Hours) maintains handling and storage requirements

Selection of the LFE2-20E-5FN484C requires verification that the reduced I/O count (331 versus 352) and reduced RAM capacity (282,624 versus 358,400 bits) are compatible with the target application design.

Frequently Asked Questions (FAQ)

Q: Can the LFE2-20E-5FN484C be used as a direct replacement for the LFEC15E-5FN484C?

A: The LFE2-20E-5FN484C is mechanically and electrically compatible due to identical package type, supply voltage, and operating temperature specifications. However, the reduced I/O pin count (331 versus 352) and reduced RAM capacity (282,624 versus 358,400 bits) require design verification to confirm functional compatibility.

Q: What are the key differences between these two parts?

A: The primary differences are: (1) Series designation (EC versus ECP2), (2) I/O pin availability (352 versus 331), (3) Logic element capacity (15,400 versus 21,000), (4) RAM capacity (358,400 versus 282,624 bits), and (5) Product status (Obsolete versus Active).

Q: Are the package dimensions identical?

A: Yes. Both parts use the 484-BBGA (23x23) package, ensuring identical footprint, pin pitch, and PCB layout compatibility.

Q: Do these parts require different power supply specifications?

A: No. Both parts operate on identical supply voltage (1.14V ~ 1.26V) and share the same operating temperature range (0°C ~ 85°C), eliminating power supply modifications.

Q: What is the impact of reduced I/O pins on system design?

A: The substitute part provides 21 fewer I/O pins (331 versus 352). Design verification is required to confirm that all required signal connections can be accommodated within the available I/O resources.

Q: What is the impact of reduced RAM capacity?

A: The substitute part provides 75,776 fewer RAM bits (282,624 versus 358,400). Applications requiring maximum embedded memory capacity require verification that the reduced RAM allocation is sufficient for the target design.