ATF2500C-20PC Equivalent & Substitute Parts

Part Overview

The ATF2500C-20PC is a Complex Programmable Logic Device (CPLD) manufactured by Microchip Technology, featuring 24 macrocells and 24 I/O pins with a maximum propagation delay of 20 nanoseconds. This device is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and production requirements. The ATF2500C-20PC is designed for in-system programmable applications requiring through-hole mounting in 40-DIP packages.

Substiute Parts

ATF2500C-20PC

Microchip TechnologyIn Stock: 1249ATF2500C-20PC Datasheet

Current PartRFQ

ATF2500C-20PU

Microchip TechnologyIn Stock: 903ATF2500C-20PU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ATF2500C-20PC is determined by the following critical parameters:

• Base Product Number: Both parts must belong to the ATF2500 family
• Macrocell Count: Minimum 24 macrocells required
• I/O Pin Count: Minimum 24 I/O pins required
• Propagation Delay: Maximum 20 ns tpd(1)
• Programmable Type: In-system programmable capability
• Package Type: 40-DIP through-hole configuration
• Supplier Device Package: 40-PDIP designation

The ATF2500C-20PU meets all substitution criteria, sharing identical functional specifications and package geometry while offering improved product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The ATF2500C-20PU is the direct substitute for the ATF2500C-20PC. Both devices share identical functional specifications, macrocell architecture, I/O configuration, and propagation delay characteristics. The ATF2500C-20PU offers the following advantages:

• Product Status: Active product with ongoing manufacturer support, compared to the obsolete status of the ATF2500C-20PC
• RoHS Compliance: ROHS3 compliant, meeting current environmental and regulatory requirements
• Operating Temperature Range: Extended range of -40°C to 85°C, providing broader thermal operating conditions compared to 0°C to 70°C
• Voltage Supply Range: Wider tolerance band of 4.5V to 5.5V, compared to 4.75V to 5.25V

Pin-for-pin compatibility and identical package geometry ensure direct replacement without circuit board modifications. Both devices utilize 40-PDIP through-hole packaging with identical mechanical dimensions.

Frequently Asked Questions (FAQ)

Q: Can the ATF2500C-20PU directly replace the ATF2500C-20PC without circuit modifications?

A: Yes. Both devices are pin-for-pin compatible with identical 40-DIP package geometry, macrocell count, I/O configuration, and propagation delay specifications. No circuit board layout changes are required.

Q: What are the key differences between these two parts?

A: The primary differences are product status, compliance certifications, and operating ranges. The ATF2500C-20PU is an active product with ROHS3 compliance and an extended operating temperature range of -40°C to 85°C, compared to the obsolete ATF2500C-20PC with a 0°C to 70°C range.

Q: Are there any voltage supply compatibility concerns?

A: Both devices operate within standard 5V logic supply ranges. The ATF2500C-20PU has a wider tolerance band (4.5V to 5.5V) compared to the ATF2500C-20PC (4.75V to 5.25V). Existing power supply designs for the ATF2500C-20PC will function with the ATF2500C-20PU.

Q: What packaging options are available?

A: Both parts are supplied in 40-DIP through-hole packages with identical mechanical specifications. The ATF2500C-20PU is available in tube packaging, while the ATF2500C-20PC packaging type is not specified.

Q: Are there any programming or firmware compatibility issues?

A: Both devices support in-system programmable functionality. Programming algorithms and configuration data developed for the ATF2500C-20PC are compatible with the ATF2500C-20PU.