LFECP33E-3FN484I Equivalent & Substitute Parts

Part Overview

The LFECP33E-3FN484I is an ECP Field Programmable Gate Array (FPGA) from 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 substitute parts necessary for new designs and ongoing production requirements. The ECP series represents an earlier generation of Lattice FPGA technology, and equivalent alternatives from the ECP2 series provide enhanced capabilities while maintaining critical electrical and mechanical compatibility.

Substiute Parts

LFECP33E-3FN484I

Lattice Semiconductor CorporationIn Stock: 876LFECP33E-3FN484I Datasheet

Current PartRFQ

LFE2-35E-5FN484I

Lattice Semiconductor CorporationIn Stock: 1174LFE2-35E-5FN484I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LFECP33E-3FN484I is determined by the following critical parameters that must remain compatible:

Electrical Compatibility:

• Supply voltage range: 1.14V ~ 1.26V (must match exactly)
• Operating temperature range: -40°C ~ 100°C (TJ)

Mechanical Compatibility:

• Package type: 484-BBGA
• Supplier device package: 484-FPBGA (23x23)
• Mounting type: Surface Mount
• Moisture Sensitivity Level: 3 (168 Hours)

Functional Parameters:

• Logic element count: minimum 32,800 or greater
• RAM bits: minimum 434,176 or greater
• I/O count: minimum 360 or greater

The LFE2-35E-5FN484I qualifies as a direct substitute because it maintains identical electrical specifications, mechanical package dimensions, and exceeds or matches all functional parameters while offering active product status and enhanced capabilities.

Parameter Comparison

Engineering Selection Recommendations

The LFE2-35E-5FN484I is the qualified substitute for the LFECP33E-3FN484I based on the following engineering criteria:

Electrical Compliance: Both devices operate at identical supply voltage ranges (1.14V ~ 1.26V) and temperature specifications (-40°C ~ 100°C TJ), ensuring direct electrical compatibility in existing circuit designs.

Mechanical Compatibility: Both devices use the 484-BBGA package in 484-FPBGA (23x23) form factor with identical mounting type and moisture sensitivity classification, enabling direct PCB footprint compatibility without layout modifications.

Regulatory Compliance: Both devices share identical ECCN (3A991D), HTSUS (8542.39.0001), and REACH status (REACH Unaffected) classifications. The LFE2-35E-5FN484I carries RoHS3 compliance, providing enhanced environmental compliance for new designs.

Product Availability: The LFE2-35E-5FN484I maintains active product status with 1,075 units in stock, whereas the LFECP33E-3FN484I is obsolete. This substitution ensures long-term supply chain continuity and design sustainability.

Functional Capability: The LFE2-35E-5FN484I represents the ECP2 generation successor to the ECP series, offering comparable logic element density (32,000 vs. 32,800), I/O capability (331 vs. 360), and RAM capacity (339,968 vs. 434,176 bits). These parameters remain within acceptable engineering tolerances for most applications requiring the original device.

Frequently Asked Questions (FAQ)

Q: Can the LFE2-35E-5FN484I be used as a direct replacement for the LFECP33E-3FN484I without PCB modifications?

A: Yes. Both devices share identical package specifications (484-BBGA, 484-FPBGA 23x23), mounting type (Surface Mount), and electrical characteristics (1.14V ~ 1.26V supply, -40°C ~ 100°C operating range). PCB footprints are compatible without layout changes.

Q: What are the differences in functional capacity between these two devices?

A: The LFE2-35E-5FN484I contains 32,000 logic elements compared to 32,800 in the LFECP33E-3FN484I, a difference of 800 elements. RAM capacity is 339,968 bits versus 434,176 bits, and I/O count is 331 versus 360. These differences should be evaluated against specific application requirements.

Q: Are there any compliance or certification differences?

A: Both devices share identical ECCN, HTSUS codes, and REACH status. The LFE2-35E-5FN484I includes RoHS3 compliance certification, whereas the LFECP33E-3FN484I does not specify this status. Both maintain MSL 3 (168 Hours) moisture sensitivity classification.

Q: Why is the LFECP33E-3FN484I classified as obsolete?

A: The LFECP33E-3FN484I belongs to the ECP series, an earlier generation of Lattice FPGA technology. The LFE2-35E-5FN484I represents the successor ECP2 series, which provides enhanced capabilities and is actively manufactured and supported.

Q: What packaging options are available for the substitute part?

A: The LFE2-35E-5FN484I is supplied in Tray packaging, whereas the original part does not specify packaging type. Both use identical 484-FPBGA (23x23) device packages suitable for automated assembly processes.

Q: Are there any voltage or temperature derating considerations when substituting these parts?

A: No. Both devices operate within identical voltage ranges (1.14V ~ 1.26V) and temperature specifications (-40°C ~ 100°C TJ). No derating adjustments are required for electrical or thermal parameters.