ATF1502ASV-15JC44 Equivalent & Substitute Parts

Part Overview

The ATF1502ASV-15JC44 is a Complex Programmable Logic Device (CPLD) from Microchip Technology's ATF15xx series, featuring 32 macrocells and 32 I/O pins with 15 nanosecond propagation delay. This device is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and production requirements. The part operates within the 3V to 3.6V supply range and is housed in a 44-pin PLCC package suitable for surface mount applications.

Substiute Parts

ATF1502ASV-15JC44

Microchip TechnologyIn Stock: 1108ATF1502ASV-15JC44 Datasheet

Current PartRFQ

ATF1502ASV-15JU44

Microchip TechnologyIn Stock: 3135ATF1502ASV-15JU44 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ATF1502ASV-15JC44 is determined by strict equivalence across the following critical parameters:

• Macrocell count: 32 (exact match required)
• I/O pin count: 32 (exact match required)
• Maximum propagation delay: 15 ns (exact match required)
• Supply voltage range: 3V ~ 3.6V (exact match required)
• Package type: 44-LCC (J-Lead) surface mount (exact match required)
• Programmable architecture: In System Programmable with minimum 10K program/erase cycles (exact match required)

The ATF1502ASV-15JU44 meets all substitution criteria. Differences exist only in product status, operating temperature range, packaging format, compliance certifications, and moisture sensitivity level—parameters that do not affect functional equivalence in the CPLD logic architecture.

Parameter Comparison

Engineering Selection Recommendations

The ATF1502ASV-15JU44 is the direct functional equivalent for the obsolete ATF1502ASV-15JC44. Selection of the substitute part is justified by:

• Active product status ensuring continued availability and manufacturer support
• ROHS3 compliance meeting current environmental and regulatory requirements
• Extended operating temperature range (-40°C to 85°C) providing broader application flexibility compared to the original part's 0°C to 70°C range
• Identical electrical and logical specifications across all critical performance parameters
• Verified programmability status confirming in-system programming capability

For applications constrained to the original 0°C to 70°C operating range, the ATF1502ASV-15JU44 remains fully compatible and introduces no functional limitations.

Frequently Asked Questions (FAQ)

Q: Can the ATF1502ASV-15JU44 directly replace the ATF1502ASV-15JC44 in existing designs?

A: Yes. Both devices share identical macrocell count (32), I/O pin count (32), propagation delay (15 ns), supply voltage (3V ~ 3.6V), package type (44-LCC), and programmable architecture. The substitute part is functionally equivalent for all logic design purposes.

Q: What is the significance of the different operating temperature ranges?

A: The ATF1502ASV-15JC44 operates from 0°C to 70°C, while the ATF1502ASV-15JU44 operates from -40°C to 85°C. The substitute part's extended range encompasses the original specification, making it suitable for all applications within the original temperature window and additional industrial or extended-temperature applications.

Q: Does the RoHS3 compliance of the substitute part affect compatibility?

A: No. RoHS3 compliance is a manufacturing and environmental standard that does not alter the electrical or functional characteristics of the CPLD. The substitute part meets modern regulatory requirements without compromising compatibility.

Q: Are the packaging formats identical between the two parts?

A: Yes. Both parts use the 44-LCC (J-Lead) package in surface mount configuration with identical footprint dimensions (16.6x16.6 mm). PCB layout and assembly processes require no modification.

Q: What is the difference between the -JC44 and -JU44 suffixes?

A: The suffix indicates packaging and temperature grade. The -JC44 denotes the obsolete variant with standard temperature range, while -JU44 denotes the active variant with extended temperature range and tube packaging. The core CPLD logic remains identical.