LC5256MV-75FN256C Equivalent & Substitute Parts

Part Overview

The LC5256MV-75FN256C is a Complex Programmable Logic Device (CPLD) from Lattice Semiconductor Corporation's ispXPLD® 5000MV series. This device features 256 macrocells, 141 I/O pins, and a propagation delay of 7.5 ns, housed in a 256-pin BGA package. The product is currently obsolete, making identification of functionally compatible alternatives essential for ongoing system support and new design implementations.

Substiute Parts

LC5256MV-75FN256C

Lattice Semiconductor CorporationIn Stock: 15769LC5256MV-75FN256C Datasheet

Current PartRFQ

LCMXO2-1200UHC-4FTG256I

Lattice Semiconductor CorporationIn Stock: 5960LCMXO2-1200UHC-4FTG256I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The LCMXO2-1200UHC-4FTG256I qualifies as a substitute based on the following alignment criteria:

Package Compatibility: Both devices utilize a 256-pin BGA package in 17x17 form factor, ensuring mechanical and electrical pin compatibility on PCB layouts.

I/O Pin Count: The substitute provides 206 I/O pins, exceeding the original device's 141 I/O requirement, maintaining full signal routing capability.

Logic Density: The substitute contains 1280 logic elements organized within 160 LABs/CLBs, providing substantially greater programmable capacity than the original 256 macrocells, ensuring design migration feasibility.

Voltage Supply Range: The substitute operates within 2.375V ~ 3.465V, overlapping the original device's 3V ~ 3.6V range, supporting compatible power distribution architectures.

Surface Mount Technology: Both devices employ surface mount assembly, maintaining manufacturing process consistency.

Manufacturer Continuity: Both devices originate from Lattice Semiconductor Corporation, ensuring design tool compatibility and technical support alignment.

Parameter Comparison

Engineering Selection Recommendations

The LC5256MV-75FN256C is classified as obsolete, necessitating alternative component selection for production and support applications. The LCMXO2-1200UHC-4FTG256I is an active product from the same manufacturer, ensuring ongoing availability and technical support.

The substitute device maintains package-level compatibility through identical 256-pin BGA form factor (17x17), supporting direct PCB layout reuse. The expanded I/O count (206 versus 141) and increased logic capacity (1280 logic elements versus 256 macrocells) provide design headroom without requiring layout modifications.

Voltage supply range overlap (2.375V ~ 3.465V includes the original 3V ~ 3.6V specification) permits power distribution architecture compatibility. The substitute's extended operating temperature range (-40°C ~ 100°C versus 0°C ~ 90°C) supports broader environmental applications.

Both devices maintain identical MSL rating (3, 168 Hours), ensuring equivalent moisture handling and storage requirements. ROHS3 compliance of the substitute aligns with current regulatory standards.

Frequently Asked Questions (FAQ)

Q: Can the LCMXO2-1200UHC-4FTG256I directly replace the LC5256MV-75FN256C on existing PCBs?

A: Yes. Both devices use identical 256-pin BGA packages in 17x17 form factor. Pin assignments and mechanical dimensions are compatible, permitting direct PCB layout reuse without redesign.

Q: What are the key differences between these devices?

A: The original is a CPLD with 256 macrocells; the substitute is an FPGA with 1280 logic elements. The substitute provides 206 I/O pins versus 141, extended temperature range (-40°C to 100°C versus 0°C to 90°C), and active product status versus obsolete.

Q: Are the voltage supply requirements compatible?

A: The substitute's supply range (2.375V ~ 3.465V) overlaps the original specification (3V ~ 3.6V). Existing power distribution designs operating within 3V ~ 3.465V require no modification.

Q: Does the substitute require different design tools or programming methods?

A: Both devices originate from Lattice Semiconductor Corporation. Design tool compatibility and programming methodologies are maintained within the Lattice ecosystem, though FPGA-specific design approaches may differ from CPLD methodologies.

Q: What is the significance of the increased I/O count?

A: The substitute provides 206 I/O pins compared to the original 141. Designs utilizing fewer than 141 I/O pins operate within the substitute's capability. Unused I/O pins can be configured as no-connect or repurposed for system expansion.

Q: Are moisture sensitivity and storage requirements identical?

A: Both devices carry MSL rating 3 (168 Hours), requiring identical moisture control, storage, and handling procedures. No changes to component management protocols are necessary.