ATF1502BE-5AX44 Equivalent & Substitute Parts

Part Overview

The ATF1502BE-5AX44 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 TQFP package. This device is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The ATF1502BE-5AX44 delivers 5 nanosecond propagation delay with in-system programmability, suitable for embedded logic applications requiring high-speed performance.

Substiute Parts

ATF1502BE-5AX44

Microchip TechnologyIn Stock: 724ATF1502BE-5AX44 Datasheet

Current PartRFQ

ATF1502ASV-15AU44

Microchip TechnologyIn Stock: 1713ATF1502ASV-15AU44 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATF1502BE-5AX44 is determined by the following critical parameters:

• Macrocell and I/O Count: Both main and substitute parts must maintain 32 macrocells and 32 I/O pins to ensure functional equivalence
• Package Type: Both devices use 44-TQFP (10x10) surface mount packaging, ensuring mechanical and thermal compatibility
• Programmability: Both support in-system programmability with minimum 10K program/erase cycles
• Manufacturer: Both are Microchip Technology products within the ATF15xx series
• Compliance Standards: Both meet ROHS3 compliance and identical moisture sensitivity specifications

The ATF1502ASV-15AU44 qualifies as a substitute despite differences in propagation delay (15 ns vs. 5 ns), voltage supply range (3V ~ 3.6V vs. 1.7V ~ 1.9V), and operating temperature range (-40°C ~ 85°C vs. 0°C ~ 70°C). These differences reflect design variations within the same product family and do not prevent functional substitution when application requirements permit.

Parameter Comparison

Engineering Selection Recommendations

The ATF1502ASV-15AU44 is the designated substitute for the obsolete ATF1502BE-5AX44. Selection between these devices depends on application-specific timing and environmental requirements:

ATF1502BE-5AX44 (Obsolete): Use only for legacy system maintenance or when 5 nanosecond propagation delay is mandatory and the narrow voltage supply range (1.7V ~ 1.9V) is compatible with system design.

ATF1502ASV-15AU44 (Active): Preferred for new designs and production. This device offers active product status, extended operating temperature range (-40°C ~ 85°C), and broader voltage supply compatibility (3V ~ 3.6V). The 15 nanosecond propagation delay is acceptable for applications where the additional 10 nanosecond delay does not violate timing constraints.

Both devices maintain identical macrocell and I/O configurations, package specifications, and compliance certifications, ensuring drop-in compatibility at the mechanical and regulatory levels.

Frequently Asked Questions (FAQ)

Q: Can the ATF1502ASV-15AU44 directly replace the ATF1502BE-5AX44 in existing designs?

A: Mechanical and electrical compatibility is confirmed through identical macrocell count (32), I/O pin count (32), package type (44-TQFP), and mounting specifications. However, the 10 nanosecond increase in propagation delay (15 ns vs. 5 ns) must be evaluated against application timing requirements. Additionally, the voltage supply range differs (3V ~ 3.6V vs. 1.7V ~ 1.9V), requiring verification of power supply compatibility.

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

A: The primary differences are propagation delay (5 ns vs. 15 ns), voltage supply range (1.7V ~ 1.9V vs. 3V ~ 3.6V), operating temperature range (0°C ~ 70°C vs. -40°C ~ 85°C), and product status (obsolete vs. active). Functional logic capacity and package specifications remain identical.

Q: Why is the ATF1502BE-5AX44 classified as obsolete?

A: Product obsolescence reflects Microchip Technology's discontinuation of this specific variant. The ATF1502ASV-15AU44 remains in active production and serves as the current-generation equivalent within the ATF15xx series.

Q: Are both devices ROHS3 compliant?

A: Yes, both the ATF1502BE-5AX44 and ATF1502ASV-15AU44 meet ROHS3 compliance standards and share identical moisture sensitivity specifications (MSL 3, 168 hours).

Q: What packaging options are available for the substitute part?

A: The ATF1502ASV-15AU44 is supplied in tray packaging. Both devices use identical 44-TQFP (10x10) case specifications for surface mount assembly.