LFX125EB-04FN256C Equivalent & Substitute Parts

Part Overview

The LFX125EB-04FN256C is an ispXPGA® Field Programmable Gate Array (FPGA) manufactured by Lattice Semiconductor Corporation. This device features 160 I/O pins, 1936 logic elements, and 94208 total RAM bits in a 256-BGA package. The product is currently obsolete, making identification of functionally compatible alternatives essential for ongoing system support, design updates, and component procurement.

Substiute Parts

LFX125EB-04FN256C

Lattice Semiconductor CorporationIn Stock: 1221LFX125EB-04FN256C Datasheet

Current PartRFQ

LFXP2-5E-5FTN256C

Lattice Semiconductor CorporationIn Stock: 6496LFXP2-5E-5FTN256C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The LFXP2-5E-5FTN256C qualifies as a manufacturer-recommended substitute based on the following substitution criteria:

Package Compatibility: Both devices use 256-pin BGA packages with identical 17x17mm footprints (256-FPBGA and 256-FTBGA), ensuring PCB-level compatibility without layout modifications.

I/O Pin Count: The substitute provides 172 I/O pins compared to the original 160 I/O pins, offering increased I/O capacity while maintaining the same package form factor.

Logic Capacity: The LFXP2-5E-5FTN256C contains 5000 logic elements and 169984 RAM bits, substantially exceeding the original device's 1936 logic elements and 94208 RAM bits, providing enhanced functional capability.

Mounting and Environmental: Both devices are surface-mount components with identical operating temperature ranges (0°C ~ 85°C) and MSL ratings (3, 168 Hours), ensuring equivalent handling and deployment requirements.

Supply Voltage: The substitute operates at 1.14V ~ 1.26V, which differs from the original 2.3V ~ 3.6V specification. This represents a fundamental electrical difference requiring circuit-level evaluation.

Product Status: The substitute is Active, ensuring ongoing availability and manufacturer support, contrasting with the obsolete status of the original device.

Parameter Comparison

Engineering Selection Recommendations

The LFXP2-5E-5FTN256C is the manufacturer-recommended substitute for the obsolete LFX125EB-04FN256C. Selection of this substitute is supported by:

Physical Compatibility: Identical 256-pin BGA package footprint (17x17mm) permits direct PCB-level substitution without layout redesign.

Functional Upgrade: The substitute provides 2.6× greater logic element capacity (5000 vs. 1936) and 1.8× greater RAM capacity (169984 vs. 94208 bits), enabling equivalent or enhanced functional implementation.

Compliance Alignment: Both devices maintain identical REACH and ECCN classifications (REACH Unaffected, EAR99), ensuring regulatory consistency.

Environmental Equivalence: Matching operating temperature ranges (0°C ~ 85°C) and MSL ratings (3, 168 Hours) ensure equivalent handling, storage, and deployment requirements.

Supply Voltage Consideration: The substitute operates at 1.14V ~ 1.26V versus the original 2.3V ~ 3.6V. This voltage difference requires verification of power supply architecture, voltage regulation circuits, and I/O interface compatibility in the target application.

Availability: The substitute is Active status with documented inventory (6430 units), ensuring procurement viability and manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can the LFXP2-5E-5FTN256C be used as a direct drop-in replacement for the LFX125EB-04FN256C?

A: Physical and environmental compatibility is confirmed. The identical 256-pin BGA footprint (17x17mm) and matching operating temperature/MSL specifications permit PCB-level substitution. However, the supply voltage difference (1.14V ~ 1.26V vs. 2.3V ~ 3.6V) requires circuit-level evaluation of power delivery and I/O interface compatibility before implementation.

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

A: The primary differences are: (1) Supply voltage specification—the substitute operates at lower voltage; (2) Logic capacity—the substitute provides 2.6× more logic elements and 1.8× more RAM; (3) I/O count—the substitute provides 12 additional I/O pins; (4) Product status—the original is obsolete while the substitute is active.

Q: Are the package dimensions identical?

A: Yes. Both devices use 256-pin BGA packages with 17×17mm footprints. The original uses 256-FPBGA and the substitute uses 256-FTBGA, but both are mechanically and electrically compatible at the PCB level.

Q: Does the substitute provide sufficient logic and memory capacity?

A: The LFXP2-5E-5FTN256C provides significantly higher capacity: 5000 logic elements versus 1936, and 169984 RAM bits versus 94208. This enables implementation of equivalent or more complex designs.

Q: What compliance certifications apply to both devices?

A: Both devices are REACH Unaffected and classified as EAR99 for export purposes. Moisture sensitivity level is identical at MSL 3 (168 Hours).

Q: Is the substitute currently available?

A: Yes. The LFXP2-5E-5FTN256C is Active status with documented inventory of 6430 units, ensuring procurement availability and ongoing manufacturer support.