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ATF1504ASL-25AI100 Equivalent & Substitute Parts
Part Overview
The ATF1504ASL-25AI100 is a Complex Programmable Logic Device (CPLD) manufactured by Microchip Technology, featuring 64 macrocells and 64 I/O pins in a 100-TQFP surface mount package. This device is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and production requirements. The part operates within the -40°C to 85°C temperature range with a maximum propagation delay of 25 nanoseconds and supports in-system programming with a minimum of 10,000 program/erase cycles.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Technology |
| Series | ATF15xx |
| Number of Macrocells | 64 |
| Number of I/O | 64 |
| Delay Time tpd(1) Max | 25 ns |
| Voltage Supply - Internal | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Package / Case | 100-TQFP (14x14) |
| Mounting Type | Surface Mount |
| Programmable Type | In System Programmable (min 10K program/erase cycles) |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
Substitute Part Grouping Explanation
Substitution eligibility for the ATF1504ASL-25AI100 is determined by strict equivalence across the following critical parameters:
- Macrocell count: 64
- I/O pin count: 64
- Maximum propagation delay: 25 ns
- Supply voltage range: 4.5V ~ 5.5V
- Operating temperature range: -40°C ~ 85°C
- Package type: 100-TQFP (14x14)
- Programmable type: In System Programmable
- Mounting type: Surface Mount
The ATF1504ASL-25AU100 meets all electrical and mechanical substitution criteria. The primary distinction between these parts is packaging format (Tray versus standard packaging) and product status (Active versus Obsolete), with no impact on functional or electrical performance.
Parameter Comparison
| Parameter | ATF1504ASL-25AI100 | ATF1504ASL-25AU100 |
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology |
| Series | ATF15xx | ATF15xx |
| Number of Macrocells | 64 | 64 |
| Number of I/O | 64 | 64 |
| Delay Time tpd(1) Max | 25 ns | 25 ns |
| Voltage Supply - Internal | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Package / Case | 100-TQFP | 100-TQFP |
| Supplier Device Package | 100-TQFP (14x14) | 100-TQFP (14x14) |
| Mounting Type | Surface Mount | Surface Mount |
| Programmable Type | In System Programmable (min 10K program/erase cycles) | In System Programmable (min 10K program/erase cycles) |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | 3 (168 Hours) |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
| REACH Status | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
The ATF1504ASL-25AU100 is the direct functional equivalent of the ATF1504ASL-25AI100. Selection between these parts should be based on the following factors:
Product Status: The ATF1504ASL-25AU100 maintains Active product status with ongoing manufacturer support, whereas the ATF1504ASL-25AI100 is classified as Obsolete. For new designs or long-term production continuity, the active part is preferred.
Regulatory Compliance: The ATF1504ASL-25AU100 is ROHS3 Compliant, while the ATF1504ASL-25AI100 is RoHS non-compliant. Applications subject to RoHS regulations require the compliant variant.
Availability: The ATF1504ASL-25AU100 demonstrates significantly higher inventory levels (1,000,099 units) compared to the ATF1504ASL-25AI100 (740 units), ensuring supply chain reliability.
Both parts share identical electrical specifications, mechanical dimensions, and functional capabilities. No design modifications are required for substitution.
Frequently Asked Questions (FAQ)
Q: Are the ATF1504ASL-25AI100 and ATF1504ASL-25AU100 pin-compatible?
A: Yes. Both devices utilize the 100-TQFP (14x14) package with identical pin assignments, electrical characteristics, and functional specifications. Direct substitution is possible without PCB redesign.
Q: What is the difference between the two part numbers?
A: The primary differences are packaging format (Tray for the AU variant) and product lifecycle status (
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