ATF2500C-20JC Equivalent & Substitute Parts

Part Overview

The ATF2500C-20JC is a Complex Programmable Logic Device (CPLD) manufactured by Microchip Technology, featuring 24 macrocells and 24 I/O pins in a 44-pin PLCC package. This device is classified as obsolete, making identification of compatible alternatives essential for ongoing system support and component procurement. The ATF2500C-20JC operates with a maximum propagation delay of 20 nanoseconds and requires a 4.75V to 5.25V internal supply voltage. Due to its obsolete status, locating functionally equivalent parts is necessary for design continuity and production sustainability.

Substiute Parts

ATF2500C-20JC

Microchip TechnologyIn Stock: 2269ATF2500C-20JC Datasheet

Current PartRFQ

ATF2500C-15JU

Microchip TechnologyIn Stock: 1392ATF2500C-15JU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATF2500C-20JC is determined by the following critical parameters:

• Macrocell and I/O Count: Both the main part and substitute must provide 24 macrocells and 24 I/O pins to maintain functional equivalence
• Package Type: Both parts must use the 44-LCC (J-Lead) package in 44-PLCC configuration to ensure mechanical and electrical compatibility
• Programmable Architecture: Both parts must support In System Programmable functionality
• Base Product Series: Both parts must belong to the ATF2500 base product family

The ATF2500C-15JU qualifies as a direct substitute based on these parameters. While it offers improved performance characteristics (15 ns delay versus 20 ns) and an extended operating temperature range, the core functional specifications remain compatible for system integration.

Parameter Comparison

Engineering Selection Recommendations

The ATF2500C-15JU is the qualified substitute for the ATF2500C-20JC. Selection of this alternative part is supported by the following factors:

Product Status: The ATF2500C-15JU maintains active product status, ensuring continued availability and manufacturer support, whereas the ATF2500C-20JC is obsolete.

Compliance: The ATF2500C-15JU achieves ROHS3 compliance, meeting current environmental and regulatory standards. The original part is RoHS non-compliant.

Functional Compatibility: Both parts share identical macrocell count, I/O configuration, package type, and programmable architecture, enabling direct functional substitution in existing designs.

Performance Enhancement: The ATF2500C-15JU provides superior propagation delay performance (15 ns versus 20 ns) and an extended operating temperature range (-40°C to 85°C versus 0°C to 70°C), offering improved operational margins.

Frequently Asked Questions (FAQ)

Q: Can the ATF2500C-15JU be used as a direct replacement for the ATF2500C-20JC?

A: Yes. Both parts share identical macrocell and I/O counts, use the same 44-LCC package, and support In System Programmable functionality. The ATF2500C-15JU is functionally compatible for direct substitution.

Q: What are the key differences between these parts?

A: The ATF2500C-15JU offers faster propagation delay (15 ns versus 20 ns), wider voltage supply tolerance (4.5V to 5.5V versus 4.75V to 5.25V), extended operating temperature range (-40°C to 85°C versus 0°C to 70°C), and ROHS3 compliance. The original part is obsolete; the substitute is active.

Q: Are the packages mechanically identical?

A: Yes. Both parts use the 44-LCC (J-Lead) package in 44-PLCC configuration (16.6x16.6 mm), ensuring identical PCB footprints and mounting requirements.

Q: Does the improved performance of the ATF2500C-15JU affect design compatibility?

A: No. Faster propagation delay and wider operating ranges are backward-compatible enhancements that do not require design modifications.

Q: What is the programmable compatibility between these parts?

A: Both parts support In System Programmable functionality, maintaining identical programming methodology and tool compatibility.