ATF1504ASV-15JC44 Equivalent & Substitute Parts

Part Overview

The ATF1504ASV-15JC44 is a Complex Programmable Logic Device (CPLD) manufactured by Microchip Technology, 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. The ATF15xx series architecture and electrical specifications define the substitution criteria for this embedded integrated circuit.

Substiute Parts

ATF1504ASV-15JC44

Microchip TechnologyIn Stock: 1163ATF1504ASV-15JC44 Datasheet

Current PartRFQ

ATF1504ASV-15JU44

Microchip TechnologyIn Stock: 2203ATF1504ASV-15JU44 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATF1504ASV-15JC44 is determined by strict equivalence across the following parameters:

• Macrocell count: 64 macrocells (functional logic capacity)
• I/O pin count: 32 pins (signal interface capability)
• Propagation delay: 15 ns maximum (timing performance)
• Internal voltage supply: 3V ~ 3.6V (power requirements)
• Package type: 44-LCC J-Lead (physical and electrical interface)
• Programmable architecture: In System Programmable with minimum 10K program/erase cycles (reconfigurability)

The ATF1504ASV-15JU44 meets all these core electrical and mechanical criteria, differing only in product status, operating temperature range, compliance certifications, and packaging format (tube vs. standard).

Parameter Comparison

Engineering Selection Recommendations

The ATF1504ASV-15JU44 is the direct functional equivalent of the ATF1504ASV-15JC44 for applications requiring identical electrical performance and logic capacity. Selection between these parts depends on system requirements and compliance constraints:

ATF1504ASV-15JU44 is preferred when:

• Active product support and availability are required (Active product status vs. Obsolete)
• RoHS3 compliance is mandated by procurement or regulatory standards
• Extended operating temperature range (-40°C ~ 85°C) is necessary for the application
• Long-term component supply chain stability is a consideration

ATF1504ASV-15JC44 remains applicable when:

• Legacy system maintenance requires exact original component specifications
• Operating temperature range of 0°C ~ 70°C is sufficient for the application environment
• RoHS compliance is not a system requirement

Both parts share identical core CPLD architecture, timing performance, and physical package dimensions, ensuring functional interchangeability at the circuit level.

Frequently Asked Questions (FAQ)

Q: Are the ATF1504ASV-15JC44 and ATF1504ASV-15JU44 electrically interchangeable?

A: Yes. Both devices feature identical macrocell count (64), I/O pin count (32), propagation delay (15 ns maximum), internal voltage supply (3V ~ 3.6V), and programmable architecture. The 44-LCC J-Lead package dimensions are identical, enabling direct substitution at the circuit board level.

Q: What is the significance of the operating temperature difference?

A: The ATF1504ASV-15JC44 operates from 0°C ~ 70°C, while the ATF1504ASV-15JU44 operates from -40°C ~ 85°C. The extended range of the substitute part provides greater thermal margin for industrial and automotive applications. For applications operating within 0°C ~ 70°C, both parts perform identically.

Q: Why is the ATF1504ASV-15JC44 listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The ATF1504ASV-15JU44 remains in active production, making it the recommended choice for new designs and ongoing procurement.

Q: Does RoHS3 compliance affect functional performance?

A: No. RoHS3 compliance reflects manufacturing process and material composition standards, not electrical or logical performance. Both parts deliver identical CPLD functionality. RoHS3 compliance is a regulatory and procurement requirement, not a performance specification.

Q: Are the packaging formats (standard vs. tube) compatible with assembly equipment?

A: Both parts use the same 44-PLCC physical package (16.6x16.6 mm). Packaging format (standard vs. tube) affects component handling and storage but does not impact circuit board assembly or electrical performance.

Q: What does Moisture Sensitivity Level (MSL) indicate?

A: MSL specifies the maximum time a component can be exposed to ambient humidity before soldering. ATF1504ASV-15JC44 has MSL 2 (1 Year storage), while ATF1504ASV-15JU44 has MSL 3 (168 Hours storage). Both are suitable for standard manufacturing environments with appropriate moisture control.