ATF1508AS-10JC84 Equivalent & Substitute Parts

Part Overview

The ATF1508AS-10JC84 is a Complex Programmable Logic Device (CPLD) manufactured by Microchip Technology, featuring 128 macrocells and 64 I/O pins in an 84-pin PLCC package. This device is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and production requirements. The part operates with a maximum propagation delay of 10 nanoseconds and supports in-system programming with a minimum of 10,000 program/erase cycles.

Substiute Parts

ATF1508AS-10JC84

Microchip TechnologyIn Stock: 1313ATF1508AS-10JC84 Datasheet

Current PartRFQ

ATF1508AS-10JU84

Microchip TechnologyIn Stock: 8877ATF1508AS-10JU84 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ATF1508AS-10JC84 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) with identical physical dimensions (29.31x29.31 mm)
• Propagation Delay: Must not exceed 10 ns maximum
• Programming Capability: Must support in-system programming with minimum 10K program/erase cycles
• Manufacturer: Microchip Technology ATF15xx series

The ATF1508AS-10JU84 meets all substitution criteria as a direct equivalent within the same product family, with enhanced operational specifications.

Parameter Comparison

Engineering Selection Recommendations

The ATF1508AS-10JU84 is the direct substitute for the obsolete ATF1508AS-10JC84. Both devices share identical functional specifications, macrocell architecture, I/O configuration, and package geometry. The substitute part offers the following advantages:

• Active Product Status: The ATF1508AS-10JU84 maintains active manufacturing status, ensuring long-term availability and supply chain continuity.
• Regulatory Compliance: ROHS3 compliance of the substitute part aligns with current environmental and regulatory requirements, whereas the original part is non-compliant.
• Extended Operating Range: The substitute supports an expanded voltage supply range (4.5V ~ 5.5V versus 4.75V ~ 5.25V) and extended temperature range (-40°C ~ 85°C versus 0°C ~ 70°C), providing greater design flexibility for diverse application environments.
• Packaging: The substitute is supplied in tube packaging, which may differ from the original part's packaging format but maintains identical component specifications.

Frequently Asked Questions (FAQ)

Q: Can the ATF1508AS-10JU84 be used as a direct replacement for the ATF1508AS-10JC84?

A: Yes. Both devices are functionally equivalent with identical macrocell count (128), I/O pin count (64), propagation delay (10 ns maximum), and 84-LCC package geometry. The substitute meets all electrical and mechanical requirements for direct substitution.

Q: What are the differences between these two parts?

A: The primary differences are product status, compliance certifications, and operational ranges. The ATF1508AS-10JU84 is an active product with ROHS3 compliance, extended voltage supply range (4.5V ~ 5.5V), and extended operating temperature range (-40°C ~ 85°C). The original ATF1508AS-10JC84 is obsolete with a narrower voltage range and standard industrial temperature range.

Q: Are there any package compatibility concerns?

A: No. Both parts use the identical 84-LCC (J-Lead) package with matching physical dimensions (29.31x29.31 mm). PCB footprints and mounting procedures are identical. The substitute is supplied in tube packaging rather than the original's packaging format, but this does not affect component compatibility.

Q: Does the extended temperature range of the substitute affect compatibility?

A: No. The extended operating temperature range (-40°C ~ 85°C) of the ATF1508AS-10JU84 is a superset of the original part's range (0°C ~ 70°C). Designs qualified for the original part will operate within the substitute's specified range without modification.

Q: Is the expanded voltage supply range of the substitute compatible with designs for the original part?

A: Yes. The substitute's voltage supply range (4.5V ~ 5.5V) encompasses the original part's range (4.75V ~ 5.25V). Existing power supply designs will operate within the substitute's specifications.

Q: What is the significance of ROHS3 compliance?

A: ROHS3 compliance indicates the substitute part meets current Restriction of Hazardous Substances regulations. The original part's non-compliance status may present regulatory or procurement challenges in certain markets or applications. The substitute eliminates these compliance concerns.