EPM7064STC44-5F Equivalent & Substitute Parts

Part Overview

The EPM7064STC44-5F is a Complex Programmable Logic Device (CPLD) from Intel's MAX® 7000S series, designed for embedded applications requiring in-system programmability. This device features 64 macrocells, 1250 gates, and 36 I/O pins in a 44-pin TQFP package with a maximum propagation delay of 5 nanoseconds. The product is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

EPM7064STC44-5F

IntelIn Stock: 843EPM7064STC44-5F Datasheet

Current PartRFQ

ATF1504AS-7AX44

Microchip TechnologyIn Stock: 2170ATF1504AS-7AX44 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EPM7064STC44-5F is determined by the following critical parameters:

Mechanical Compatibility: Identical 44-TQFP package footprint (10x10mm) ensures direct PCB placement compatibility.

Electrical Compatibility: Matching voltage supply range (4.75V ~ 5.25V) and operating temperature range (0°C ~ 70°C) ensure functional operation within the same system environment.

Functional Compatibility: Equivalent macrocell count (64 macrocells) and in-system programmability support identical logic density and design implementation.

I/O Pin Count: The substitute part must accommodate the original design's I/O requirements. The EPM7064STC44-5F provides 36 I/O pins; substitute parts with 32 I/O pins require design verification to confirm sufficient pin availability for the target application.

Propagation Delay: The original part specifies 5 ns maximum delay. Substitute parts with longer delays (7.5 ns) may impact timing-critical applications and require timing analysis.

Parameter Comparison

Engineering Selection Recommendations

The ATF1504AS-7AX44 serves as a functional substitute for the obsolete EPM7064STC44-5F based on the following criteria:

Package Compatibility: Both devices utilize the 44-TQFP (10x10mm) package, enabling direct PCB footprint compatibility without layout modifications.

Electrical Specifications: Identical voltage supply range (4.75V ~ 5.25V) and operating temperature range (0°C ~ 70°C) ensure operation within equivalent system parameters.

Logic Density: Both devices provide 64 macrocells, supporting equivalent design complexity and logic implementation.

Programmability: Both devices support in-system programmability, maintaining design flexibility and field reconfiguration capability.

Product Availability: The ATF1504AS-7AX44 maintains active product status with verified availability, addressing the obsolescence of the original part.

Compliance Status: The substitute part achieves ROHS3 compliance, meeting modern environmental and regulatory requirements, whereas the original part is RoHS non-compliant.

Design Considerations: The substitute part exhibits a maximum propagation delay of 7.5 ns compared to the original 5 ns specification. Applications with timing-critical paths operating near the original 5 ns margin require timing analysis to confirm acceptable performance. The substitute part provides 32 I/O pins versus the original 36 I/O pins; designs utilizing more than 32 I/O connections require alternative solutions.

Frequently Asked Questions (FAQ)

Q: Can the ATF1504AS-7AX44 directly replace the EPM7064STC44-5F without PCB modifications?

A: Yes, both devices share the identical 44-TQFP (10x10mm) package footprint. Direct PCB placement is possible without layout changes. However, verify that your design does not exceed 32 I/O pins and that the 7.5 ns propagation delay meets timing requirements.

Q: What is the primary difference between these two devices?

A: The main differences are propagation delay (5 ns vs. 7.5 ns), I/O pin count (36 vs. 32), product status (obsolete vs. active), and RoHS compliance (non-compliant vs. ROHS3 compliant). The substitute part provides equivalent macrocell count and voltage specifications.

Q: Does the substitute part support the same programming interface?

A: Both devices support in-system programmability. The substitute part specifies a minimum of 10,000 program/erase cycles. Confirm that your programming equipment and firmware support the ATF1504AS-7AX44 device family.

Q: Are there any thermal or environmental differences?

A: Both devices operate across 0°C to 70°C and maintain identical moisture sensitivity levels (MSL 3, 168 hours). No thermal or environmental derating is required for equivalent operating conditions.

Q: What should I verify before implementing this substitute?

A: Confirm that your design utilizes 32 or fewer I/O pins and that timing paths accommodate the 7.5 ns propagation delay. Verify programming tool compatibility with the ATF15xx series. Validate that ROHS3 compliance meets your supply chain requirements.