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ATF1504AS-7AC100 Equivalent & Substitute Parts
Part Overview
The ATF1504AS-7AC100 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, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part operates with a 7.5 ns maximum propagation delay and requires a 4.75V to 5.25V internal supply voltage.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Technology |
| Series | ATF15xx |
| Number of Macrocells | 64 |
| Number of I/O | 64 |
| 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 for the ATF1504AS-7AC100 is determined by the following critical parameters:
- Package compatibility: All substitute parts must use the 100-TQFP (14x14) surface mount package
- Macrocell and I/O count: Substitutes must provide 64 macrocells and 64 I/O pins
- Programmability: All parts must support In System Programmable functionality with minimum 10K program/erase cycles
- Moisture sensitivity: MSL rating of 3 (168 Hours) is maintained across all substitutes
- Manufacturer: All substitutes are from Microchip Technology within the ATF15xx series
Two substitute parts meet these criteria: ATF1504AS-7AX100 and ATF1504AS-10AU100. These parts differ in propagation delay specifications and operating temperature ranges, which determine their suitability for specific application requirements.
Parameter Comparison
| Parameter | ATF1504AS-7AC100 (Main) | ATF1504AS-7AX100 | ATF1504AS-10AU100 |
|---|---|---|---|
| Product Status | Obsolete | Active | Active |
| Delay Time tpd(1) Max | 7.5 ns | 7.5 ns | 10 ns |
| Voltage Supply - Internal | 4.75V ~ 5.25V | 4.75V ~ 5.25V | 4.5V ~ 5.5V |
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | -40°C ~ 85°C (TA) |
| Number of Macrocells | 64 | 64 | 64 |
| Number of I/O | 64 | 64 | 64 |
| Package / Case | 100-TQFP | 100-TQFP | 100-TQFP |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | ROHS3 Compliant |
| Programmable Type | In System Programmable (min 10K program/erase cycles) | 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) | 3 (168 Hours) |
Engineering Selection Recommendations
ATF1504AS-7AX100 is the primary substitute for the ATF1504AS-7AC100. This part maintains identical electrical specifications including 7.5 ns propagation delay and 4.75V to 5.25V supply voltage range, with matching operating temperature range of 0°C to 70°C. The ATF1504AS-7AX100 is active in production and ROHS3 compliant, providing regulatory advantage over the obsolete main part while preserving timing and thermal characteristics.
ATF1504AS-10AU100 serves as an alternative substitute when extended operating temperature range (-40°C to 85°C) and wider supply voltage tolerance (4.5V to 5.5V) are required. This part has a maximum propagation delay of 10 ns, which is 2.5 ns slower than the main part. The ATF1504AS-10AU100 is suitable for applications where timing margins permit the increased delay specification. This part is also active in production and ROHS3 compliant.
Both substitute parts are available in active production status with higher inventory levels than the obsolete main part, ensuring supply continuity.
Frequently Asked Questions (FAQ)
Q: Can ATF1504AS-7AX100 be used as a direct replacement for ATF1504AS-7AC100?
A: Yes. The ATF1504AS-7AX100 provides identical propagation delay (7.5 ns), supply voltage range (4.75V to 5.25V), operating temperature range (0°C to 70°C), macrocell count (64), I/O count (64), and package type (100-TQFP). Both parts support In System Programmable functionality with the same MSL rating.
Q: What is the difference between ATF1504AS-7AX100 and ATF1504AS-10AU100?
A: The primary differences are propagation delay and operating specifications. ATF1504AS-7AX100 maintains 7.5 ns delay with 4.75V to 5.25V supply and 0°C to 70°C temperature range. ATF1504AS-10AU100 has 10 ns maximum delay with wider supply range (4.5V to 5.5V) and extended temperature range (-40°C to 85°C).
Q: Can ATF1504AS-10AU100 replace ATF1504AS-7AC100 in timing-critical applications?
A: ATF1504AS-10AU100 has a 2.5 ns slower propagation delay specification. Substitution is valid only if the application design accommodates the 10 ns maximum delay without violating timing requirements.
Q: Are all substitute parts RoHS compliant?
A: ATF1504AS-7AX100 and ATF1504AS-10AU100 are both ROHS3 compliant. The original ATF1504AS-7AC100 is RoHS non-compliant.
Q: Do substitute parts require different handling or storage procedures?
A: All parts maintain the same Moisture Sensitivity Level (MSL) rating of 3 (168 Hours), requiring identical handling and storage protocols.
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