LFXP3C-3T100C Equivalent & Substitute Parts

Part Overview

The LFXP3C-3T100C is an XP series Field Programmable Gate Array (FPGA) manufactured by Lattice Semiconductor Corporation, featuring 62 I/O pins and 3000 logic elements in a 100-LQFP package. This device is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The part operates across a supply voltage range of 1.71V to 3.465V and supports surface mount assembly with a 0°C to 85°C operating temperature range.

Substiute Parts

LFXP3C-3T100C

Lattice Semiconductor CorporationIn Stock: 5783LFXP3C-3T100C Datasheet

Current PartRFQ

LCMXO2-4000HC-4TG144C

Lattice Semiconductor CorporationIn Stock: 7173LCMXO2-4000HC-4TG144C Datasheet

MFR RecommendedRFQ

LFXP2-5E-5TN144C

Lattice Semiconductor CorporationIn Stock: 19553LFXP2-5E-5TN144C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LFXP3C-3T100C are selected based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

• Logic element count equal to or greater than 3000
• Total RAM bits equal to or greater than 55296
• I/O pin count equal to or greater than 62
• Supply voltage range compatibility with 1.71V ~ 3.465V
• Surface mount packaging
• Operating temperature range of 0°C ~ 85°C or broader
• Moisture sensitivity level of 3 or lower

The two substitute parts identified meet these criteria while offering enhanced capabilities in logic density, I/O count, and active product status.

Parameter Comparison

Engineering Selection Recommendations

LCMXO2-4000HC-4TG144C is the manufacturer-recommended primary substitute. This MachXO2 series device exceeds the LFXP3C-3T100C specifications with 4320 logic elements, 94208 RAM bits, and 114 I/O pins. The device maintains active product status and ROHS3 compliance. The 144-LQFP package provides increased pin density compared to the 100-LQFP original. Supply voltage compatibility spans 2.375V to 3.465V, which overlaps the upper range of the original part. This substitute is suitable for designs requiring enhanced logic capacity and I/O expansion.

LFXP2-5E-5TN144C is an alternative substitute from the XP2 series with active product status and ROHS3 compliance. This device provides 5000 logic elements and 169984 RAM bits, exceeding the original specifications. The 100 I/O pins meet the minimum requirement. However, the supply voltage range of 1.14V to 1.26V does not overlap with the original part's 1.71V to 3.465V range, requiring circuit redesign for power supply compatibility. This substitute is appropriate for new designs where low-voltage operation is advantageous.

Both substitutes are surface mount devices in 144-LQFP packages with identical moisture sensitivity levels and operating temperature ranges to the original part.

Frequently Asked Questions (FAQ)

Q: Can the LCMXO2-4000HC-4TG144C directly replace the LFXP3C-3T100C without design modifications?

A: The LCMXO2-4000HC-4TG144C exceeds all functional specifications of the LFXP3C-3T100C. However, the package change from 100-LQFP to 144-LQFP requires PCB layout modifications. The supply voltage range shift (2.375V minimum vs. 1.71V minimum) may require power supply circuit adjustments depending on your application.

Q: What are the key differences between the two substitute parts?

A: The LCMXO2-4000HC-4TG144C operates at 2.375V to 3.465V supply voltage, while the LFXP2-5E-5TN144C operates at 1.14V to 1.26V. The LFXP2-5E-5TN144C provides higher logic element count (5000 vs. 4320) and greater RAM capacity (169984 vs. 94208 bits). Both are active products with ROHS3 compliance.

Q: Why is the LFXP3C-3T100C classified as obsolete?

A: The LFXP3C-3T100C belongs to the XP series, which has been superseded by newer FPGA architectures offering improved performance, power efficiency, and integration density. Lattice Semiconductor has transitioned production to the MachXO2 and XP2 series for ongoing support.

Q: Are there package compatibility considerations?

A: Yes. The original LFXP3C-3T100C uses a 100-LQFP package (14x14mm), while both substitutes use a 144-LQFP package (20x20mm). This requires PCB redesign for pin routing and thermal management. The increased pin count provides additional I/O capacity but demands larger board space allocation.

Q: Do the substitute parts meet the same compliance standards?

A: Both substitute parts maintain REACH Unaffected status and EAR99 ECCN classification identical to the original part. The LCMXO2-4000HC-4TG144C and LFXP2-5E-5TN144C both carry ROHS3 compliance, exceeding the original part's compliance profile.