LFXP20C-3FN388C Equivalent & Substitute Parts

Part Overview

The LFXP20C-3FN388C is an XP series Field Programmable Gate Array (FPGA) from Lattice Semiconductor Corporation, featuring 268 I/O pins and 20,000 logic elements. This device is classified as obsolete, making identification of compatible alternatives essential for ongoing system support and new design implementations. The part is housed in a 388-BBGA package with surface mount configuration and operates across a supply voltage range of 1.71V to 3.465V.

Substiute Parts

LFXP20C-3FN388C

Lattice Semiconductor CorporationIn Stock: 2103LFXP20C-3FN388C Datasheet

Current PartRFQ

LFXP2-30E-5FN484C

Lattice Semiconductor CorporationIn Stock: 1121LFXP2-30E-5FN484C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LFXP20C-3FN388C is determined by the following critical parameters:

Logic Capacity: The main part contains 20,000 logic elements. Substitute parts must meet or exceed this capacity to maintain functional equivalence.

I/O Pin Count: The original device provides 268 I/O pins. Substitute parts with higher I/O counts (363 pins) remain compatible for designs that do not require all available pins.

Supply Voltage Range: The original part operates at 1.71V to 3.465V. Substitute parts with different voltage specifications require circuit redesign and are not direct substitutes.

Package Type: The 388-BBGA package is a critical mechanical constraint. Substitute parts in different package types (such as 484-BBGA) require PCB redesign.

Product Status: The obsolete status of the original part necessitates identification of active alternatives to ensure long-term availability and support.

The LFXP2-30E-5FN484C qualifies as a substitute based on superior logic capacity (29,000 elements), higher I/O count (363 pins), and active product status. However, the different package footprint (484-BBGA vs. 388-BBGA) and altered supply voltage range (1.14V to 1.26V) require design-level evaluation.

Parameter Comparison

Engineering Selection Recommendations

The LFXP2-30E-5FN484C is the manufacturer-recommended substitute for the obsolete LFXP20C-3FN388C. This recommendation is based on:

Product Status: The LFXP2-30E-5FN484C maintains active product status, ensuring continued availability and manufacturer support, whereas the original part is obsolete.

Compliance: Both parts share identical REACH status (REACH Unaffected) and ECCN classification (3A991D), maintaining regulatory consistency.

Functional Capacity: The substitute provides 29,000 logic elements, exceeding the original 20,000-element capacity, and offers 363 I/O pins compared to the original 268 pins.

Design Considerations: The transition from the 388-BBGA to 484-BBGA package requires PCB layout modification. The altered supply voltage range (1.14V to 1.26V versus 1.71V to 3.465V) necessitates power supply circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can the LFXP2-30E-5FN484C be used as a direct pin-for-pin replacement?

A: No. The substitute uses a 484-BBGA package with different pin assignments compared to the original 388-BBGA package. PCB redesign is required.

Q: What is the primary reason for substitution?

A: The LFXP20C-3FN388C is obsolete. The LFXP2-30E-5FN484C is the active alternative from Lattice Semiconductor Corporation.

Q: Are there voltage compatibility concerns?

A: Yes. The original part operates at 1.71V to 3.465V, while the substitute operates at 1.14V to 1.26V. Power supply circuits must be redesigned accordingly.

Q: Does the substitute provide sufficient I/O capacity?

A: Yes. The substitute provides 363 I/O pins, exceeding the original 268 pins. Designs requiring fewer pins can leave unused pins unconnected.

Q: Are both parts equivalent in logic capacity?

A: The substitute exceeds the original capacity. The LFXP2-30E-5FN484C provides 29,000 logic elements versus the original 20,000 elements.

Q: What is the impact of the different package type?

A: The 484-BBGA package is larger than the 388-BBGA package. PCB footprint, trace routing, and board space allocation must be re-evaluated.

Q: Are regulatory certifications maintained?

A: Yes. Both parts share identical REACH status and ECCN classification, maintaining regulatory compliance across the substitution.