TMS320C25FNL Equivalent & Substitute Parts

Part Overview

The TMS320C25FNL is a fixed-point digital signal processor (DSP) from Texas Instruments' TMS320C2x series, housed in a 68-pin LCC (J-Lead) surface mount package. This device integrates 8kB of ROM and 1kB of on-chip RAM, operating at 50MHz with 5.00V core and I/O voltage levels across a 0°C to 70°C temperature range.

The TMS320C25FNL carries a "Not For New Designs" product status, indicating it has been superseded in the manufacturer's product roadmap. Identifying equivalent and substitute parts is essential for legacy system maintenance, repair operations, and inventory management where continued component availability is required.

Substiute Parts

TMS320C25FNL

Texas InstrumentsIn Stock: 3804TMS320C25FNL Datasheet

Current PartRFQ

TMS320C25FNA

Texas InstrumentsIn Stock: 65933TMS320C25FNA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TMS320C25FNL is determined by strict equivalence across the following critical parameters:

• Processor Type & Series: Fixed-point DSP architecture within the TMS320C2x family
• Clock Rate: 50MHz operation
• Memory Configuration: 8kB ROM and 1kB on-chip RAM
• Voltage Specifications: 5.00V core and I/O voltage
• Package & Pinout: 68-pin LCC (J-Lead) surface mount configuration
• Temperature Range: 0°C to 70°C operating specification
• Compliance Standards: ROHS3 compliance and MSL rating

The TMS320C25FNA qualifies as a direct substitute based on identical electrical specifications, memory architecture, clock frequency, voltage requirements, and physical packaging. Both devices share the same base product number (TMS320) and series designation, with functional and pin-level compatibility.

Parameter Comparison

Engineering Selection Recommendations

The TMS320C25FNA is a direct functional and electrical equivalent to the TMS320C25FNL. Both devices maintain identical specifications across all critical parameters: processor architecture, clock frequency, memory configuration, voltage levels, temperature operating range, and physical packaging.

Selection between these parts should be based on inventory availability and supply chain considerations. Both devices carry "Not For New Designs" status from Texas Instruments, indicating mature product lifecycle positioning. Both maintain ROHS3 compliance and equivalent moisture sensitivity ratings, ensuring compatibility with existing assembly and storage protocols.

For applications requiring the TMS320C25FNL, the TMS320C25FNA provides full pin-level and functional compatibility without design modification or re-qualification.

Frequently Asked Questions (FAQ)

Q: Can the TMS320C25FNA replace the TMS320C25FNL in existing designs?

A: Yes. The TMS320C25FNA is electrically and functionally equivalent across all specified parameters. Pin configuration, voltage requirements, clock frequency, memory architecture, and temperature operating range are identical. Direct substitution is supported without circuit modification.

Q: Are there packaging differences between these parts?

A: No. Both the TMS320C25FNL and TMS320C25FNA use the same 68-pin LCC (J-Lead) surface mount package with identical dimensions (24.23x24.23mm). PCB footprints and assembly processes remain unchanged.

Q: What is the significance of the "Not For New Designs" status?

A: This designation indicates that Texas Instruments has concluded the active development phase for this product line. The devices remain available for purchase and support existing applications, but new product development should evaluate alternative solutions from the current TMS320 portfolio.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the TMS320C25FNL and TMS320C25FNA are ROHS3 compliant with identical MSL ratings of 3 (168 Hours). Compliance documentation and handling requirements are equivalent.

Q: What determines substitution eligibility for this DSP?

A: Substitution is based on matching specifications across processor type, clock frequency, memory configuration (ROM and RAM), voltage levels (core and I/O), operating temperature range, physical package, and compliance certifications. The TMS320C25FNA meets all these criteria for the TMS320C25FNL.