ATF1508ASVL-20JC84 Equivalent & Substitute Parts

Part Overview

The ATF1508ASVL-20JC84 is a Complex Programmable Logic Device (CPLD) from Microchip Technology's ATF15xx series, featuring 128 macrocells and 64 I/O pins in an 84-pin PLCC package. This device is classified as obsolete, making identification of functionally compatible alternatives essential for ongoing system support and new design implementations. The part operates with a maximum propagation delay of 20 ns and supports in-system programming with a minimum of 10,000 program/erase cycles.

Substiute Parts

ATF1508ASVL-20JC84

Microchip TechnologyIn Stock: 2340ATF1508ASVL-20JC84 Datasheet

Current PartRFQ

ATF1508ASV-15JU84

Microchip TechnologyIn Stock: 3479ATF1508ASV-15JU84 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ATF1508ASVL-20JC84 is determined by the following critical parameters:

• Macrocell Count: Must equal 128 macrocells
• I/O Pin Count: Must equal 64 I/O pins
• Package Type: Must be 84-LCC (J-Lead) / 84-PLCC form factor
• Voltage Supply Range: Must support 3V ~ 3.6V internal supply
• Programmable Architecture: Must support in-system programming
• Mounting Configuration: Must be surface mount compatible

The ATF1508ASV-15JU84 meets all substitution criteria, sharing identical macrocell count, I/O configuration, package specifications, voltage requirements, and programmable characteristics. The primary distinction is the improved propagation delay specification and expanded operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The ATF1508ASV-15JU84 is the direct functional equivalent for the obsolete ATF1508ASVL-20JC84. Selection of the substitute part is supported by the following factors:

Product Status: The ATF1508ASV-15JU84 maintains active product status, ensuring continued availability and supply chain reliability compared to the obsolete original part.

Regulatory Compliance: The substitute part achieves ROHS3 compliance, meeting current environmental and regulatory requirements. The original part is RoHS non-compliant, which may present procurement and deployment constraints in regulated applications.

Performance Enhancement: The ATF1508ASV-15JU84 provides improved propagation delay (15 ns versus 20 ns), delivering superior timing performance without functional compromise.

Temperature Range Expansion: The substitute part supports an extended operating temperature range (-40°C ~ 85°C) compared to the original (0°C ~ 70°C), enabling deployment in broader environmental conditions.

Electrical and Mechanical Compatibility: Both parts share identical macrocell architecture, I/O configuration, package form factor, voltage specifications, and programmable characteristics, ensuring direct substitution without design modification.

Frequently Asked Questions (FAQ)

Q: Can the ATF1508ASV-15JU84 directly replace the ATF1508ASVL-20JC84 in existing designs?

A: Yes. Both devices share identical macrocell count (128), I/O pin count (64), package type (84-PLCC), voltage supply range (3V ~ 3.6V), and in-system programmable architecture. No design modifications are required for electrical or mechanical compatibility.

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

A: The primary differences are propagation delay (15 ns versus 20 ns), operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C), product status (active versus obsolete), and RoHS compliance (ROHS3 compliant versus non-compliant).

Q: Does the improved propagation delay of the ATF1508ASV-15JU84 affect timing-critical applications?

A: The 15 ns specification of the substitute part is faster than the 20 ns specification of the original part. This represents an improvement that benefits timing-critical applications. Designs originally qualified to the 20 ns specification will operate within tighter timing margins with the 15 ns part.

Q: Are there packaging or handling differences between these parts?

A: Both parts use 84-PLCC surface mount packaging with identical physical dimensions (29.31x29.31 mm). Moisture sensitivity level is identical at MSL 2 (1 Year). The substitute part is supplied in tube packaging, while original packaging specifications are not detailed.

Q: Why is the ATF1508ASVL-20JC84 classified as obsolete?

A: Microchip Technology has transitioned this product to obsolete status. The ATF1508ASV-15JU84 represents the active equivalent within the ATF15xx series, ensuring continued design support and component availability.