ATF1502ASL-25JC44 Equivalent & Substitute Parts

Part Overview

The ATF1502ASL-25JC44 is a Complex Programmable Logic Device (CPLD) from Microchip Technology's ATF15xx series, featuring 32 macrocells and 32 I/O pins with a maximum propagation delay of 25 nanoseconds. This device is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and production requirements. The part operates within a 4.75V to 5.25V supply range and is housed in a 44-pin PLCC package suitable for surface mount applications.

Substiute Parts

ATF1502ASL-25JC44

Microchip TechnologyIn Stock: 907ATF1502ASL-25JC44 Datasheet

Current PartRFQ

ATF1502ASL-25JU44

Microchip TechnologyIn Stock: 1971ATF1502ASL-25JU44 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATF1502ASL-25JC44 is determined by strict equivalence across the following critical parameters:

• Macrocell count: 32 (fixed requirement)
• I/O pin count: 32 (fixed requirement)
• Maximum propagation delay: 25 ns (performance specification)
• Package type: 44-LCC (J-Lead) in 44-PLCC form factor (physical compatibility)
• Programmable architecture: In System Programmable with minimum 10K program/erase cycles
• Mounting technology: Surface Mount

The ATF1502ASL-25JU44 meets all these criteria and represents a direct functional equivalent within the same product family.

Parameter Comparison

Engineering Selection Recommendations

The ATF1502ASL-25JU44 is the direct equivalent for the obsolete ATF1502ASL-25JC44. Both devices share identical core specifications: 32 macrocells, 32 I/O pins, 25 ns maximum propagation delay, and 44-PLCC package configuration.

The substitute part offers extended operational advantages:

• Active product status ensures continued manufacturer support and availability
• ROHS3 compliance satisfies modern regulatory requirements, whereas the main part is RoHS non-compliant
• Expanded operating temperature range (-40°C to 85°C versus 0°C to 70°C) accommodates broader environmental conditions
• Wider voltage supply tolerance (4.5V to 5.5V versus 4.75V to 5.25V) provides additional design margin

The substitute part is electrically and mechanically compatible for direct replacement in existing designs.

Frequently Asked Questions (FAQ)

Q: Can the ATF1502ASL-25JU44 directly replace the ATF1502ASL-25JC44 in existing designs?

A: Yes. Both parts are functionally equivalent with identical macrocell count, I/O configuration, propagation delay, and package type. The substitute part is pin-compatible and electrically interchangeable.

Q: What are the differences between these two part numbers?

A: The primary differences are product status (obsolete versus active), RoHS compliance (non-compliant versus ROHS3 compliant), operating temperature range (0°C–70°C versus -40°C–85°C), and voltage supply tolerance (4.75V–5.25V versus 4.5V–5.5V). The substitute offers broader operational specifications and regulatory compliance.

Q: Are there packaging differences between these parts?

A: No. Both parts use identical 44-LCC (J-Lead) packaging in 44-PLCC form factor (16.6x16.6 mm) for surface mount applications.

Q: Does the substitute part support the same programming specifications?

A: Yes. Both parts are In System Programmable with a minimum of 10K program/erase cycles and identical 25 ns maximum propagation delay.

Q: What is the inventory status of the substitute part?

A: The ATF1502ASL-25JU44 is actively stocked with 1,900 pieces available as new original inventory, compared to 840 pieces of the obsolete main part.