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ATF2500C-20PI Equivalent & Substitute Parts
Part Overview
The ATF2500C-20PI 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-20PI operates within a 4.5V to 5.5V supply range and is housed in a 40-pin DIP package suitable for through-hole mounting applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Technology |
| Device Category | Embedded, Integrated Circuits (ICs) |
| Number of Macrocells | 24 |
| Number of I/O Pins | 24 |
| Delay Time tpd(1) Max | 20 ns |
| Voltage Supply - Internal | 4.5V ~ 5.5V |
| Operating Temperature Range | -40°C ~ 85°C (TA) |
| Programmable Type | In System Programmable |
| Mounting Type | Through Hole |
| Package / Case | 40-DIP (0.600", 15.24mm) |
| Supplier Device Package | 40-PDIP |
Substitute Part Grouping Explanation
Substitution of the ATF2500C-20PI is determined by strict equivalence across the following critical parameters:
- Macrocell Count: 24 macrocells (functional logic capacity)
- I/O Pin Count: 24 I/O pins (interface capability)
- Propagation Delay: 20 ns maximum (timing performance)
- Supply Voltage Range: 4.5V ~ 5.5V (power compatibility)
- Operating Temperature: -40°C ~ 85°C (thermal operating envelope)
- Programmable Type: In System Programmable (programming methodology)
- Package Type: 40-DIP through-hole (physical and electrical interface)
The ATF2500C-20PU qualifies as a direct substitute based on identical electrical specifications and package configuration. Both devices share the same base product number (ATF2500) and maintain full parameter compatibility across all critical dimensions.
Parameter Comparison
| Parameter | ATF2500C-20PI | ATF2500C-20PU | Match |
|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | ✓ |
| Number of Macrocells | 24 | 24 | ✓ |
| Number of I/O Pins | 24 | 24 | ✓ |
| Delay Time tpd(1) Max | 20 ns | 20 ns | ✓ |
| Voltage Supply - Internal | 4.5V ~ 5.5V | 4.5V ~ 5.5V | ✓ |
| Operating Temperature Range | -40°C ~ 85°C | -40°C ~ 85°C | ✓ |
| Programmable Type | In System Programmable | In System Programmable | ✓ |
| Mounting Type | Through Hole | Through Hole | ✓ |
| Package / Case | 40-DIP (0.600", 15.24mm) | 40-DIP (0.600", 15.24mm) | ✓ |
| Supplier Device Package | 40-PDIP | 40-PDIP | ✓ |
| Product Status | Obsolete | Active | — |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | — |
Engineering Selection Recommendations
The ATF2500C-20PU is the direct functional equivalent of the ATF2500C-20PI. Selection between these devices should be based on the following factors:
Product Status: The ATF2500C-20PI is classified as obsolete, while the ATF2500C-20PU maintains active product status. For new designs or long-term production continuity, the ATF2500C-20PU is the appropriate selection.
Regulatory Compliance: The ATF2500C-20PU is ROHS3 compliant, whereas the ATF2500C-20PI is RoHS non-compliant. Applications subject to RoHS requirements must use the ATF2500C-20PU.
Packaging: The ATF2500C-20PI is supplied in standard packaging, while the ATF2500C-20PU is supplied in tube packaging. Packaging selection depends on assembly process requirements and inventory management practices.
Electrical and Functional Equivalence: Both devices are electrically and functionally identical across all specified parameters, including macrocell count, I/O configuration, timing performance, supply voltage, and operating temperature range.
Frequently Asked Questions (FAQ)
Q: Can the ATF2500C-20PU be used as a direct replacement for the ATF2500C-20PI in existing designs?
A: Yes. The ATF2500C-20PU is electrically and functionally equivalent to the ATF2500C-20PI across all critical parameters: macrocell count, I/O pin count, propagation delay, supply voltage, operating temperature, and package configuration. No design modifications are required.
Q: What is the difference between the ATF2500C-20PI and ATF2500C-20PU?
A: The primary differences are product status and regulatory compliance. The ATF2500C-20PI is obsolete and RoHS non-compliant, while the ATF2500C-20PU is active and ROHS3 compliant. Packaging differs (standard versus tube). All electrical and functional specifications are identical.
Q: Why is the ATF2500C-20PI classified as obsolete?
A: Obsolescence indicates that the manufacturer has discontinued production of this specific part number. The ATF2500C-20PU remains in active production and serves as the current equivalent offering.
Q: Are there any timing or performance differences between these devices?
A: No. Both devices specify identical maximum propagation delay of 20 nanoseconds and operate within the same voltage and temperature ranges.
Q: What packaging options are available?
A: The ATF2500C-20PI uses standard packaging, while the ATF2500C-20PU uses tube packaging. Both are 40-pin DIP packages with identical physical dimensions (0.600", 15.24mm).
Q: Is the ATF2500C-20PU suitable for RoHS-compliant applications?
A: Yes. The ATF2500C-20PU is ROHS3 compliant and is suitable for applications with RoHS requirements. The ATF2500C-20PI is not RoHS compliant.
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