XC9572-10PC44C Equivalent & Substitute Parts

Part Overview

The XC9572-10PC44C is a Complex Programmable Logic Device (CPLD) manufactured by AMD, belonging to the XC9500 series. This device features 72 macrocells, 1600 gates, and 34 I/O pins in a 44-pin PLCC package with a maximum propagation delay of 10 nanoseconds. The XC9572-10PC44C is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support, design updates, and procurement continuity.

Substiute Parts

XC9572-10PC44C

AMDIn Stock: 1863XC9572-10PC44C Datasheet

Current PartRFQ

ATF1504AS-10JU44

Microchip TechnologyIn Stock: 1498ATF1504AS-10JU44 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the XC9572-10PC44C is determined by the following critical parameters:

Physical Compatibility:

• Package type: 44-PLCC (44-pin Plastic Leaded Chip Carrier)
• Mounting type: Surface Mount
• Pin count and footprint alignment

Electrical Compatibility:

• Maximum propagation delay: 10 ns or faster
• Voltage supply range: Must accommodate 4.75V ~ 5.25V operation
• In-system programmability with minimum 10K program/erase cycles

Functional Capacity:

• Macrocell count: 72 or greater
• I/O pin count: 34 or greater
• Gate count: 1600 or greater

The ATF1504AS-10JU44 meets the physical package requirements (44-PLCC) and electrical timing specifications (10 ns maximum delay). While the ATF1504AS-10JU44 provides 64 macrocells and 32 I/O pins—lower than the XC9572-10PC44C—it operates within compatible voltage ranges and supports in-system programmability. The substitute part is suitable for applications where the reduced logic capacity does not exceed design requirements.

Parameter Comparison

Engineering Selection Recommendations

For Obsolete Part Replacement: The ATF1504AS-10JU44 is an active product from Microchip Technology and serves as a direct substitute for the obsolete XC9572-10PC44C in applications where logic capacity requirements do not exceed 64 macrocells and 32 I/O pins. Both devices share identical 10 ns propagation delay specifications and compatible 44-PLCC packaging.

Compliance Considerations: The ATF1504AS-10JU44 is ROHS3 compliant, whereas the XC9572-10PC44C is RoHS non-compliant. Systems requiring RoHS compliance must use the ATF1504AS-10JU44. Both parts are REACH unaffected and classified under ECCN EAR99.

Operating Temperature Range: The ATF1504AS-10JU44 supports an extended operating temperature range of -40°C to 85°C compared to the XC9572-10PC44C range of 0°C to 70°C. Applications requiring operation below 0°C or above 70°C must use the ATF1504AS-10JU44.

Voltage Supply Compatibility: The ATF1504AS-10JU44 accepts a wider voltage supply range (4.5V ~ 5.5V) compared to the XC9572-10PC44C (4.75V ~ 5.25V). Both ranges overlap sufficiently for standard 5V logic applications.

Logic Capacity Assessment: Design verification is required to confirm that the reduced macrocell count (64 versus 72) and I/O pin count (32 versus 34) of the ATF1504AS-10JU44 satisfy application requirements. If the original design utilizes more than 64 macrocells or 34 I/O pins, alternative substitutes with higher capacity must be evaluated.

Frequently Asked Questions (FAQ)

Q: Can the ATF1504AS-10JU44 directly replace the XC9572-10PC44C without PCB modifications?

A: The ATF1504AS-10JU44 uses the same 44-PLCC package footprint as the XC9572-10PC44C, enabling direct PCB placement. However, the ATF1504AS-10JU44 provides 32 I/O pins versus 34 on the original part. If the design uses all 34 I/O pins, two pins will remain unconnected on the substitute device, requiring design review to confirm functionality.

Q: What is the primary limitation of using the ATF1504AS-10JU44 as a substitute?

A: The ATF1504AS-10JU44 contains 64 macrocells compared to 72 on the XC9572-10PC44C. Designs requiring more than 64 macrocells cannot be accommodated by this substitute. Logic density analysis of the original design is necessary to determine compatibility.

Q: Are the programming interfaces compatible between these two devices?

A: Both the XC9572-10PC44C and ATF1504AS-10JU44 support in-system programmability with a minimum of 10K program/erase cycles. However, programming algorithms and toolchain support differ between AMD and Microchip devices. Verification of programmer compatibility and design file conversion is required.

Q: Does the ATF1504AS-10JU44 meet RoHS requirements?

A: Yes, the ATF1504AS-10JU44 is ROHS3 compliant. The original XC9572-10PC44C is RoHS non-compliant. Systems requiring RoHS compliance must use the ATF1504AS-10JU44.

Q: What is the impact of the extended operating temperature range of the ATF1504AS-10JU44?

A: The ATF1504AS-10JU44 operates from -40°C to 85°C, compared to 0°C to 70°C for the XC9572-10PC44C. This extended range provides greater flexibility for applications requiring operation in extreme temperature environments. No negative impact occurs when using the substitute in standard temperature ranges.

Q: Are there any voltage supply considerations when substituting these parts?

A: The ATF1504AS-10JU44 accepts 4.5V to 5.5V, while the XC9572-10PC44C requires 4.75V to 5.25V. The overlapping range (4.75V to 5.25V) is suitable for standard 5V logic applications. No supply modifications are necessary for typical designs operating within this overlap.

Q: What packaging format is used for the ATF1504AS-10JU44?

A: The ATF1504AS-10JU44 is supplied in a tube package, whereas the XC9572-10PC44C packaging format was not specified in the original documentation. Both devices use the 44-PLCC surface-mount package type with compatible footprints.