ATF1502AS-15AC44 Equivalent & Substitute Parts

Part Overview

The ATF1502AS-15AC44 is a Complex Programmable Logic Device (CPLD) manufactured by Microchip Technology, featuring 32 macrocells and 32 I/O pins in a 44-TQFP surface mount package. This device is classified as obsolete and operates within the 0°C to 70°C temperature range with a maximum propagation delay of 15 nanoseconds. Due to its obsolete product status, identifying functionally compatible alternatives is essential for ongoing system support and new design implementations.

Substiute Parts

ATF1502AS-15AC44

Microchip TechnologyIn Stock: 2144ATF1502AS-15AC44 Datasheet

Current PartRFQ

ATF1502AS-10AU44

Microchip TechnologyIn Stock: 1603ATF1502AS-10AU44 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATF1502AS-15AC44 is determined by the following critical parameters that must remain consistent:

• Macrocell Count: 32 macrocells (functional logic capacity)
• I/O Pin Count: 32 I/O pins (interface compatibility)
• Package Type: 44-TQFP (10x10) surface mount (physical and thermal compatibility)
• Programmable Architecture: In System Programmable with minimum 10K program/erase cycles (programming methodology)
• Manufacturer Series: ATF15xx (design compatibility and pin configuration)

The ATF1502AS-10AU44 qualifies as a direct substitute based on identical macrocell count, I/O configuration, package specification, and programmable characteristics. Differences in propagation delay, voltage supply range, and operating temperature represent performance enhancements rather than compatibility barriers.

Parameter Comparison

Engineering Selection Recommendations

The ATF1502AS-10AU44 is the qualified substitute for the ATF1502AS-15AC44. Selection of this alternative is supported by the following factors:

Product Status: The ATF1502AS-10AU44 maintains Active product status, ensuring continued availability and manufacturing support, whereas the main part is classified as Obsolete.

Regulatory Compliance: The substitute achieves ROHS3 compliance, meeting current environmental and material restriction requirements. The main part is RoHS non-compliant.

Performance Characteristics: The substitute provides improved propagation delay (10 ns versus 15 ns) and extended operating temperature range (-40°C to 85°C versus 0°C to 70°C), delivering enhanced performance margins for system operation.

Functional Equivalence: Both devices maintain identical macrocell architecture (32 macrocells), I/O configuration (32 pins), package specification (44-TQFP), and programmable methodology (In System Programmable), ensuring direct functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can the ATF1502AS-10AU44 directly replace the ATF1502AS-15AC44 in existing designs?

A: Yes. Both devices share identical macrocell count, I/O pin configuration, and 44-TQFP package specification. The substitute operates within the same voltage supply range and maintains equivalent programmable architecture. No PCB layout modifications are required.

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

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

Q: Does the improved propagation delay of the substitute affect compatibility?

A: No. Faster propagation delay (10 ns) is a performance enhancement that does not compromise compatibility. Systems designed for 15 ns timing will operate correctly with the 10 ns device.

Q: Are there packaging differences between these parts?

A: Both devices use 44-TQFP (10x10) surface mount packaging. The main part is supplied in standard packaging, while the substitute is supplied in Tray packaging. Both maintain identical MSL rating of 3 (168 Hours).

Q: Is the extended temperature range of the substitute a concern for standard applications?

A: No. The substitute's extended operating range (-40°C to 85°C) encompasses the main part's range (0°C to 70°C). Applications operating within the original temperature specification will function identically.