ATF1504AS-15JC44 Equivalent & Substitute Parts

Part Overview

The ATF1504AS-15JC44 is a Complex Programmable Logic Device (CPLD) from Microchip Technology's ATF15xx series, featuring 64 macrocells and 32 I/O pins in a 44-pin PLCC package. This device is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

Substiute Parts

ATF1504AS-15JC44

Microchip TechnologyIn Stock: 1786ATF1504AS-15JC44 Datasheet

Current PartRFQ

ATF1504AS-10JU44

Microchip TechnologyIn Stock: 1498ATF1504AS-10JU44 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the ATF1504AS-15JC44 is determined by the following critical parameters:

• Macrocell Count: Must equal 64 macrocells
• I/O Pin Count: Must equal 32 I/O pins
• Package Type: Must be 44-LCC (J-Lead) with 44-PLCC (16.6x16.6) footprint
• Programmable Architecture: Must support In System Programmable (ISP) functionality
• Manufacturer Series: Must belong to Microchip Technology's ATF15xx series

The ATF1504AS-10JU44 meets all substitution criteria, with enhanced electrical and operational specifications compared to the obsolete main part.

Parameter Comparison

Engineering Selection Recommendations

The ATF1504AS-10JU44 is a direct functional substitute for the ATF1504AS-15JC44. The substitute part offers superior performance characteristics, including faster propagation delay (10 ns versus 15 ns), wider operating temperature range (-40°C to 85°C versus 0°C to 70°C), and extended voltage supply tolerance (4.5V to 5.5V versus 4.75V to 5.25V).

The substitute part maintains active product status with Microchip Technology, ensuring long-term availability and support. The ATF1504AS-10JU44 is ROHS3 compliant, whereas the main part is RoHS non-compliant. Both devices share identical package geometry, macrocell architecture, and I/O configuration, enabling direct PCB-level substitution without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the ATF1504AS-10JU44 replace the ATF1504AS-15JC44 in existing designs?

A: Yes. Both devices share identical macrocell count (64), I/O pin count (32), package type (44-LCC), and programmable architecture. The substitute part offers improved electrical performance and wider operating specifications.

Q: What are the key differences between these parts?

A: The primary differences are propagation delay (10 ns versus 15 ns), operating temperature range (-40°C to 85°C versus 0°C to 70°C), voltage supply tolerance (4.5V to 5.5V versus 4.75V to 5.25V), and product status (Active versus Obsolete). The substitute part also provides ROHS3 compliance.

Q: Are there any package or footprint differences?

A: No. Both parts use the 44-LCC (J-Lead) package with identical 44-PLCC (16.6x16.6) footprint dimensions. No PCB redesign is required for substitution.

Q: Why is the main part listed as obsolete?

A: The ATF1504AS-15JC44 has reached end-of-life status with Microchip Technology. The ATF1504AS-10JU44 remains in active production and is the recommended alternative for new designs and ongoing system support.

Q: Does the substitute part require different programming procedures?

A: No. Both devices support In System Programmable (ISP) functionality with identical programming architecture and minimum 10K program/erase cycle capability.