LFEC20E-4FN484C Equivalent & Substitute Parts

Part Overview

The LFEC20E-4FN484C is an EC series Field Programmable Gate Array (FPGA) manufactured by Lattice Semiconductor Corporation, featuring 360 I/O pins and 19,700 logic elements 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. The ECP2 series successor provides enhanced logic capacity while maintaining electrical and mechanical compatibility within the specified parameter constraints.

Substiute Parts

LFEC20E-4FN484C

Lattice Semiconductor CorporationIn Stock: 785LFEC20E-4FN484C 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 LFEC20E-4FN484C is determined by the following critical parameters:

Electrical Compatibility: Supply voltage range (1.14V – 1.26V) and operating temperature range (0°C – 85°C) must be maintained or exceeded.

Mechanical Compatibility: Package type (484-BBGA) and physical footprint (484-FPBGA 23×23) must remain identical to ensure PCB-level compatibility without redesign.

Functional Capacity: The substitute part must provide sufficient logic elements, I/O count, and RAM capacity to support the original design requirements. The LFE2-20E-5FN484C meets these criteria with enhanced specifications while maintaining the same package and electrical parameters.

Regulatory Compliance: REACH status and ECCN classification must align with the original part to ensure compliance in regulated applications.

Parameter Comparison

Engineering Selection Recommendations

The LFE2-20E-5FN484C is the designated substitute for the obsolete LFEC20E-4FN484C. Both devices share identical electrical specifications (1.14V – 1.26V supply, 0°C – 85°C operating range), package geometry (484-BBGA, 23×23mm), and regulatory classification (REACH Unaffected, ECCN 3A991D). The LFE2-20E-5FN484C is currently in active production status, ensuring long-term availability and supply chain continuity.

The substitute part provides increased logic capacity (21,000 elements versus 19,700) and maintains equivalent I/O functionality (331 I/O versus 360), supporting existing designs without PCB modification. Both devices carry identical moisture sensitivity ratings (MSL 3, 168 hours) and comply with the same export control and environmental regulations.

Frequently Asked Questions (FAQ)

Q: Can the LFE2-20E-5FN484C be used as a direct replacement for the LFEC20E-4FN484C?

A: Yes. Both devices use the 484-BBGA package with identical 23×23mm footprint, share the same supply voltage range (1.14V – 1.26V), and operate across the same temperature range (0°C – 85°C). No PCB redesign is required.

Q: What are the differences in I/O count between these parts?

A: The LFEC20E-4FN484C provides 360 I/O pins, while the LFE2-20E-5FN484C provides 331 I/O pins. Design verification is necessary to confirm that the reduced I/O count does not impact system requirements.

Q: How do the logic element counts compare?

A: The LFEC20E-4FN484C contains 19,700 logic elements, while the LFE2-20E-5FN484C contains 21,000 logic elements. The substitute part provides additional logic capacity.

Q: Are there differences in RAM capacity?

A: Yes. The LFEC20E-4FN484C provides 434,176 RAM bits, while the LFE2-20E-5FN484C provides 282,624 RAM bits. Design verification is necessary to confirm that the reduced RAM capacity does not impact system requirements.

Q: Do both parts comply with the same regulatory standards?

A: Yes. Both devices are REACH Unaffected, carry the same ECCN classification (3A991D), and share identical HTSUS codes (8542.39.0001).

Q: What is the moisture sensitivity level for both parts?

A: Both devices are rated MSL 3 with a 168-hour floor life, requiring identical handling and storage protocols.