ATF1502AS-10JC44 Equivalent & Substitute Parts

Part Overview

The ATF1502AS-10JC44 is a Complex Programmable Logic Device (CPLD) manufactured by Microchip Technology, featuring 32 macrocells and 32 I/O pins in a 44-pin PLCC package. 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 ATF15xx series and supports in-system programming with a minimum of 10,000 program/erase cycles.

Substiute Parts

ATF1502AS-10JC44

Microchip TechnologyIn Stock: 2154ATF1502AS-10JC44 Datasheet

Current PartRFQ

ATF1502AS-10JU44

Microchip TechnologyIn Stock: 1433ATF1502AS-10JU44 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ATF1502AS-10JC44 is determined by the following critical parameters:

• Identical macrocell count (32 macrocells)
• Identical I/O pin count (32 I/O)
• Matching propagation delay specification (10 ns maximum)
• Compatible package type (44-LCC J-Lead)
• Identical in-system programmability capability
• Same manufacturer (Microchip Technology)
• Same series designation (ATF15xx)

The ATF1502AS-10JU44 meets all substitution criteria. The primary differences between the main part and substitute relate to product status, operating temperature range, voltage supply tolerance, packaging format, and compliance certifications—factors that do not affect functional equivalence in the core logic architecture.

Parameter Comparison

Engineering Selection Recommendations

The ATF1502AS-10JU44 is the direct functional equivalent of the ATF1502AS-10JC44. Selection of the substitute part is justified by the following factors:

• The substitute maintains active product status, ensuring continued availability and manufacturing support from Microchip Technology
• The ATF1502AS-10JU44 achieves ROHS3 compliance, whereas the main part is non-compliant, making the substitute suitable for applications subject to RoHS regulations
• The substitute provides an extended operating temperature range (-40°C to 85°C) compared to the main part (0°C to 70°C), offering greater thermal flexibility
• The substitute features a wider voltage supply tolerance (4.5V to 5.5V) versus the main part (4.75V to 5.25V), providing improved power supply margin
• Both parts share identical core logic specifications: 32 macrocells, 32 I/O pins, 10 ns propagation delay, and in-system programmability

Frequently Asked Questions (FAQ)

Q: Are the ATF1502AS-10JC44 and ATF1502AS-10JU44 pin-compatible?

A: Yes. Both devices feature the 44-LCC (J-Lead) package with identical pinout, macrocell architecture, and I/O configuration. Direct socket substitution is supported.

Q: What is the difference between the -JC and -JU package designations?

A: The -JC designation indicates the obsolete variant with standard commercial operating temperature range (0°C to 70°C) and RoHS non-compliant status. The -JU designation indicates the active variant with extended industrial operating temperature range (-40°C to 85°C) and ROHS3 compliance.

Q: Can the ATF1502AS-10JU44 be used in applications originally designed for the ATF1502AS-10JC44?

A: Yes. The substitute part meets or exceeds all functional specifications of the main part. The extended temperature range and improved voltage tolerance of the substitute provide additional operational margin.

Q: Are there any programming differences between these parts?

A: No. Both parts support identical in-system programmability with a minimum of 10,000 program/erase cycles. Programming procedures and fuse configurations remain unchanged.

Q: What is the impact of the different Moisture Sensitivity Levels (MSL)?

A: The main part carries MSL 2 (1 Year shelf life), while the substitute carries MSL 3 (168 Hours shelf life). This affects storage and handling procedures but does not impact functional performance after installation.