ATF1502AS-15JC44 Equivalent & Substitute Parts

Part Overview

The ATF1502AS-15JC44 is a Complex Programmable Logic Device (CPLD) from Microchip Technology's ATF15xx series, featuring 32 macrocells and 32 I/O pins in a 44-pin PLCC package. This device is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The ATF1502AS-15JC44 operates within the commercial temperature range (0°C to 70°C) with a maximum propagation delay of 15 nanoseconds and is not RoHS compliant.

Substiute Parts

ATF1502AS-15JC44

Microchip TechnologyIn Stock: 1364ATF1502AS-15JC44 Datasheet

Current PartRFQ

ATF1502AS-10JU44

Microchip TechnologyIn Stock: 1433ATF1502AS-10JU44 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The ATF1502AS-10JU44 qualifies as a direct substitute for the ATF1502AS-15JC44 based on the following critical parameters:

• Identical macrocell count (32 macrocells)
• Identical I/O pin count (32 I/O)
• Identical package type (44-LCC J-Lead, 44-PLCC 16.6x16.6)
• Identical mounting technology (Surface Mount)
• Identical programmable architecture (In System Programmable, min 10K cycles)
• Same manufacturer (Microchip Technology)
• Same series (ATF15xx)

The ATF1502AS-10JU44 represents an enhanced variant with improved electrical performance characteristics and extended operational specifications compared to the obsolete ATF1502AS-15JC44.

Parameter Comparison

Engineering Selection Recommendations

The ATF1502AS-10JU44 is the appropriate substitute for the obsolete ATF1502AS-15JC44. The substitute device maintains full functional and mechanical compatibility while offering the following advantages:

• Active product status ensures continued availability and manufacturing support
• ROHS3 compliance satisfies modern regulatory requirements, whereas the original part is non-compliant
• Improved propagation delay (10 ns versus 15 ns) provides enhanced timing performance
• Extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) supports broader environmental applications
• Wider voltage supply tolerance (4.5V to 5.5V versus 4.75V to 5.25V) improves power supply margin

Pin-for-pin and package-level compatibility is maintained, allowing direct substitution in existing PCB designs without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the ATF1502AS-10JU44 be used as a direct replacement for the ATF1502AS-15JC44?

A: Yes. Both devices share identical macrocell count (32), I/O pin count (32), package type (44-LCC), and mounting technology (Surface Mount). The ATF1502AS-10JU44 is a pin-for-pin and package-compatible substitute.

Q: What are the key differences between these two parts?

A: The primary differences are product status (Active versus Obsolete), RoHS compliance (ROHS3 Compliant versus non-compliant), propagation delay (10 ns versus 15 ns), operating temperature range (-40°C to 85°C versus 0°C to 70°C), and voltage supply tolerance (4.5V to 5.5V versus 4.75V to 5.25V).

Q: Are there any PCB layout considerations when substituting the ATF1502AS-10JU44 for the ATF1502AS-15JC44?

A: No layout modifications are required. Both devices use the identical 44-PLCC package (16.6x16.6 mm) with J-Lead configuration. Existing footprints and board designs are fully compatible.

Q: Does the improved timing performance of the ATF1502AS-10JU44 affect system design?

A: The ATF1502AS-10JU44 offers faster propagation delay (10 ns versus 15 ns), which improves timing margins. This enhancement is backward compatible and does not require design changes.

Q: What is the impact of the extended temperature range on system reliability?

A: The ATF1502AS-10JU44 operates across -40°C to 85°C, compared to the original 0°C to 70°C range. This extended range supports deployment in more demanding thermal environments without performance degradation.

Q: Is the ATF1502AS-10JU44 available in the same packaging format?

A: Yes. The ATF1502AS-10JU44 is supplied in 44-PLCC packaging (16.6x16.6 mm) with J-Lead configuration, identical to the ATF1502AS-15JC44. The substitute is available in Tube packaging.