LFEC15E-3FN484C Equivalent & Substitute Parts

Part Overview

The LFEC15E-3FN484C is an EC series Field Programmable Gate Array (FPGA) manufactured by Lattice Semiconductor Corporation. This device features 352 I/O pins, 15,400 logic elements, and 358,400 total RAM bits in a 484-BBGA package. The product is currently obsolete, making identification of compatible substitute components essential for ongoing system support, design updates, and procurement planning.

Substiute Parts

LFEC15E-3FN484C

Lattice Semiconductor CorporationIn Stock: 5898LFEC15E-3FN484C 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-3FN484C is determined by the following critical parameters:

• Package Compatibility: Both main and substitute parts must use the 484-BBGA package with identical 23x23mm footprint dimensions to ensure PCB-level compatibility without redesign.
• Supply Voltage Range: The substitute must operate within the 1.14V ~ 1.26V supply voltage specification to maintain power delivery compatibility.
• I/O Pin Count: The substitute must provide sufficient I/O pins (minimum 352) to accommodate existing signal routing and interface requirements.
• Logic Capacity: The substitute must provide logic element count and RAM capacity equal to or greater than the original device to support design functionality.
• Operating Temperature Range: The substitute must support the 0°C ~ 85°C operating temperature specification.
• Mounting Type: Surface mount technology must be maintained for manufacturing process compatibility.

The LFE2-20E-5FN484C qualifies as a direct substitute based on these parameters.

Parameter Comparison

Engineering Selection Recommendations

The LFE2-20E-5FN484C is available as an active production substitute for the obsolete LFEC15E-3FN484C. Both devices share identical package specifications (484-BBGA, 23x23mm), supply voltage range (1.14V ~ 1.26V), operating temperature range (0°C ~ 85°C), and moisture sensitivity classification (MSL 3).

The substitute device provides increased logic element capacity (21,000 versus 15,400), supporting enhanced design complexity. However, the I/O pin count is reduced from 352 to 331, and total RAM capacity decreases from 358,400 bits to 282,624 bits. Design validation is required to confirm these parameter differences do not impact system functionality.

The LFE2-20E-5FN484C holds RoHS3 compliance status, whereas the original part's RoHS status is not specified. Both devices maintain REACH Unaffected status and identical ECCN and HTSUS classifications.

Frequently Asked Questions (FAQ)

Q: Can the LFE2-20E-5FN484C be used as a direct replacement without PCB modification?

A: Yes, regarding package footprint. Both devices use the 484-BBGA package with identical 23x23mm dimensions. However, the reduced I/O pin count (331 versus 352) and RAM capacity (282,624 versus 358,400 bits) require design-level validation to confirm functional compatibility.

Q: What are the key differences between the LFEC15E-3FN484C and LFE2-20E-5FN484C?

A: The substitute provides 5,600 additional logic elements but reduces I/O pins by 21 and RAM capacity by 75,776 bits. Both maintain identical supply voltage, operating temperature, package dimensions, and moisture sensitivity specifications.

Q: Is the LFE2-20E-5FN484C suitable for new designs?

A: The LFE2-20E-5FN484C is in active production status, making it suitable for new designs. The original LFEC15E-3FN484C is obsolete and should not be specified for new applications.

Q: Are there compliance differences between these devices?

A: The LFE2-20E-5FN484C is RoHS3 compliant. Both devices are REACH Unaffected and share identical ECCN and HTSUS classifications.

Q: What inventory status should be considered for procurement?

A: The LFEC15E-3FN484C has 5,802 units in stock as new original inventory. The LFE2-20E-5FN484C has 1,479 units in stock as new original inventory. Procurement planning should account for these availability levels.