ATF1504AS-10JC84 Equivalent & Substitute Parts

Part Overview

The ATF1504AS-10JC84 is a Complex Programmable Logic Device (CPLD) manufactured by Microchip Technology, featuring 64 macrocells and 64 I/O pins in an 84-pin PLCC package. This device is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

Substiute Parts

ATF1504AS-10JC84

Microchip TechnologyIn Stock: 841ATF1504AS-10JC84 Datasheet

Current PartRFQ

ATF1504AS-10JU84

Microchip TechnologyIn Stock: 5034ATF1504AS-10JU84 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ATF1504AS-10JC84 is determined by the following critical parameters:

• Macrocell Count: 64 macrocells (fixed requirement)
• I/O Pin Count: 64 I/O pins (fixed requirement)
• Package Type: 84-LCC (J-Lead) with 84-PLCC footprint (fixed requirement)
• Propagation Delay: 10 ns maximum (fixed requirement)
• Programmable Architecture: In System Programmable capability (fixed requirement)
• Manufacturer: Microchip Technology ATF15xx series (fixed requirement)

The ATF1504AS-10JU84 qualifies as a direct substitute based on identical macrocell count, I/O configuration, package footprint, and propagation delay specification. Differences in voltage supply range, operating temperature range, product status, and compliance certifications do not affect functional substitutability for applications designed around the original part's electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

The ATF1504AS-10JU84 is the direct functional equivalent for the obsolete ATF1504AS-10JC84. Both devices share identical core specifications: 64 macrocells, 64 I/O pins, 10 ns propagation delay, and 84-pin PLCC package configuration.

The ATF1504AS-10JU84 offers extended advantages: active product status ensures ongoing availability, ROHS3 compliance meets current environmental regulations, and expanded operating temperature range (-40°C to 85°C) supports broader application environments compared to the original part's 0°C to 70°C specification.

The substitute part accommodates the original part's voltage supply range (4.75V ~ 5.25V) within its wider 4.5V ~ 5.5V specification window, ensuring compatibility with existing power delivery designs.

Frequently Asked Questions (FAQ)

Q: Can the ATF1504AS-10JU84 directly replace the ATF1504AS-10JC84 in existing designs?

A: Yes. Both devices are identical in macrocell count (64), I/O configuration (64 pins), package type (84-LCC), and propagation delay (10 ns maximum). Pin-for-pin and functional compatibility is confirmed.

Q: What is the significance of the different voltage supply ranges?

A: The ATF1504AS-10JC84 operates within 4.75V ~ 5.25V, while the ATF1504AS-10JU84 operates within 4.5V ~ 5.5V. The substitute part's wider range encompasses the original specification, ensuring compatibility with existing power supply designs.

Q: How do the operating temperature ranges differ?

A: The original part operates from 0°C to 70°C. The substitute extends this to -40°C to 85°C, enabling deployment in more demanding thermal environments. Applications limited to the original 0°C to 70°C range remain fully compatible.

Q: What does the product status difference mean?

A: The ATF1504AS-10JC84 is classified as obsolete, indicating discontinued manufacturing. The ATF1504AS-10JU84 maintains active status, ensuring continued availability and supply chain reliability.

Q: Are there compliance differences between these parts?

A: The ATF1504AS-10JC84 is RoHS non-compliant. The ATF1504AS-10JU84 is ROHS3 compliant, meeting current environmental and regulatory requirements for new designs and procurement.

Q: Does packaging differ between these parts?

A: Both parts use identical 84-PLCC (29.31x29.31mm) footprints and 84-LCC J-Lead package types. PCB layout and assembly processes require no modification.