ATF1504ASVL-20JC44 Equivalent & Substitute Parts

Part Overview

The ATF1504ASVL-20JC44 is a Complex Programmable Logic Device (CPLD) manufactured by Microchip Technology, featuring 64 macrocells and 32 I/O pins in a 44-PLCC surface mount package. This device is classified as obsolete, which necessitates identification of active equivalent parts for ongoing design support and procurement continuity. 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

ATF1504ASVL-20JC44

Microchip TechnologyIn Stock: 947ATF1504ASVL-20JC44 Datasheet

Current PartRFQ

ATF1504ASVL-20JU44

Microchip TechnologyIn Stock: 3457ATF1504ASVL-20JU44 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The ATF1504ASVL-20JU44 qualifies as a direct substitute based on the following critical parameters:

• Identical manufacturer (Microchip Technology)
• Identical series designation (ATF15xx)
• Matching macrocell count (64)
• Matching I/O pin count (32)
• Identical propagation delay specification (20 ns maximum)
• Identical internal voltage supply range (3V ~ 3.6V)
• Identical package type (44-LCC J-Lead)
• Identical mounting configuration (Surface Mount)
• Identical programmable type and cycle rating (In System Programmable, min 10K cycles)

The primary distinction between these parts is product status and environmental operating range, which do not affect functional equivalence in applications within the overlapping temperature specification.

Parameter Comparison

Engineering Selection Recommendations

The ATF1504ASVL-20JU44 is the direct functional equivalent of the ATF1504ASVL-20JC44. Selection between these parts should be based on the following criteria:

For applications requiring RoHS3 compliance: The ATF1504ASVL-20JU44 is mandatory, as the original part is RoHS non-compliant.

For applications operating within 0°C to 70°C: Both parts are suitable. The ATF1504ASVL-20JU44 provides extended temperature capability (-40°C to 85°C) without functional compromise.

For applications requiring active product support: The ATF1504ASVL-20JU44 is the appropriate selection due to its active product status. The ATF1504ASVL-20JC44 is obsolete and subject to availability constraints.

For moisture-sensitive environments: The ATF1504ASVL-20JU44 has a higher MSL rating (3 vs. 2), providing extended shelf life under controlled humidity conditions.

Frequently Asked Questions (FAQ)

Q: Are these parts pin-compatible? A: Yes. Both parts use the 44-LCC (J-Lead) package with identical pinout and electrical characteristics.

Q: Can the ATF1504ASVL-20JU44 replace the ATF1504ASVL-20JC44 in existing designs? A: Yes, without design modification. The parts are functionally equivalent across all specified electrical and mechanical parameters.

Q: What is the difference between the part numbers? A: The suffix difference (JC44 vs. JU44) indicates packaging format. JC44 denotes the obsolete variant; JU44 denotes the active variant supplied in tube packaging.

Q: Are there temperature-related limitations when substituting? A: No. Applications operating within the original specification range (0°C to 70°C) are fully compatible. The substitute part extends the usable temperature range to -40°C to 85°C.

Q: What is the impact of RoHS compliance differences? A: The ATF1504ASVL-20JC44 is RoHS non-compliant, while the ATF1504ASVL-20JU44 is ROHS3 compliant. For applications subject to RoHS regulations, the substitute part is required.

Q: Are programming characteristics identical? A: Yes. Both parts support in-system programming with identical cycle ratings (minimum 10,000 program/erase cycles) and internal voltage supply specifications.