ATF1508AS-15AC100 Equivalent & Substitute Parts

Part Overview

The ATF1508AS-15AC100 is a Complex Programmable Logic Device (CPLD) manufactured by Microchip Technology, featuring 128 macrocells and 80 I/O pins in a 100-TQFP surface mount package. This device is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

The ATF1508AS-15AC100 operates with a maximum propagation delay of 15 nanoseconds and supports in-system programming with a minimum of 10,000 program/erase cycles. The obsolete status necessitates evaluation of active alternative components that maintain functional and electrical compatibility.

Substiute Parts

ATF1508AS-15AC100

Microchip TechnologyIn Stock: 3875ATF1508AS-15AC100 Datasheet

Current PartRFQ

ATF1508AS-10AU100

Microchip TechnologyIn Stock: 1435ATF1508AS-10AU100 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATF1508AS-15AC100 is determined by the following critical parameters:

• Macrocell Count: Must equal 128 macrocells for functional equivalence
• I/O Pin Count: Must equal 80 I/O pins for pinout compatibility
• Package Type: Must be 100-TQFP (14x14) for mechanical and thermal compatibility
• Mounting Type: Must be Surface Mount for assembly process compatibility
• Programmable Type: Must support In System Programming with minimum 10K program/erase cycles
• Manufacturer: Microchip Technology ATF15xx series maintains design compatibility

The ATF1508AS-10AU100 qualifies as a substitute based on matching all critical parameters while offering improved electrical performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

The ATF1508AS-10AU100 is the qualified substitute for the obsolete ATF1508AS-15AC100. Selection is based on the following factors:

Product Status: The ATF1508AS-10AU100 maintains active product status, ensuring continued availability and manufacturing support compared to the obsolete main part.

Compliance: The substitute achieves ROHS3 compliance, addressing regulatory requirements for new designs and procurement cycles. The main part is RoHS non-compliant.

Electrical Performance: The ATF1508AS-10AU100 provides superior propagation delay performance (10 ns maximum versus 15 ns), expanded operating temperature range (-40°C to 85°C versus 0°C to 70°C), and wider voltage supply tolerance (4.5V to 5.5V versus 4.75V to 5.25V).

Functional Equivalence: Both devices maintain identical macrocell count (128), I/O pin count (80), package configuration (100-TQFP), and in-system programmable capability with minimum 10K program/erase cycles.

Certifications: Both parts maintain identical REACH and ECCN classifications, with matching HTSUS codes and MSL ratings.

Frequently Asked Questions (FAQ)

Q: Can the ATF1508AS-10AU100 directly replace the ATF1508AS-15AC100 in existing designs?

A: Yes. Both devices share identical macrocell count (128), I/O pin count (80), and 100-TQFP package configuration. Pinout and mechanical compatibility are maintained. The substitute offers improved electrical performance characteristics.

Q: What are the key differences between these parts?

A: The primary differences are product status (active versus obsolete), RoHS compliance (ROHS3 versus non-compliant), propagation delay (10 ns versus 15 ns maximum), 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 the packaging and moisture sensitivity levels identical?

A: Yes. Both devices use 100-TQFP (14x14) surface mount packages with MSL rating of 3 (168 Hours). Handling and storage requirements are equivalent.

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

A: The ATF1508AS-10AU100 provides faster propagation delay (10 ns maximum) compared to the main part (15 ns maximum). This represents improved performance and maintains backward compatibility with designs specified for 15 ns delay.

Q: What is the in-system programming capability for both devices?

A: Both the ATF1508AS-15AC100 and ATF1508AS-10AU100 support in-system programming with a minimum of 10,000 program/erase cycles, maintaining equivalent programmability.