ATF1502ASV-20AC44 Equivalent & Substitute Parts

Part Overview

The ATF1502ASV-20AC44 is a 32-macrocell Complex Programmable Logic Device (CPLD) manufactured by Microchip Technology, housed in a 44-pin TQFP surface-mount package. This device features in-system programmability with a maximum propagation delay of 20 nanoseconds and operates across a 3V to 3.6V supply voltage range. The part is classified as obsolete, necessitating identification of functionally compatible alternatives for new designs or production continuity.

Substiute Parts

ATF1502ASV-20AC44

Microchip TechnologyIn Stock: 2307ATF1502ASV-20AC44 Datasheet

Current PartRFQ

ATF1502ASV-15AU44

Microchip TechnologyIn Stock: 1713ATF1502ASV-15AU44 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATF1502ASV-20AC44 is determined by the following critical parameters that must remain constant or improve:

• Macrocell Count: 32 macrocells (no reduction permitted)
• I/O Count: 32 I/O pins (no reduction permitted)
• Package Type: 44-TQFP form factor (physical and electrical compatibility)
• Voltage Supply Range: 3V ~ 3.6V (must support or exceed this range)
• Programmability: In-system programmable capability with minimum 10K program/erase cycles
• Mounting Type: Surface mount (44-TQFP)

The substitute part ATF1502ASV-15AU44 meets all these criteria while offering improved performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

The ATF1502ASV-15AU44 is a direct functional substitute for the ATF1502ASV-20AC44. Both devices share identical macrocell and I/O configurations, package geometry, and voltage supply specifications. The substitute part offers superior performance with a 15 nanosecond maximum propagation delay compared to 20 nanoseconds, and extends the operating temperature range to -40°C ~ 85°C versus the original 0°C ~ 70°C specification.

The ATF1502ASV-15AU44 carries active product status and ROHS3 compliance, addressing obsolescence concerns and regulatory requirements. The device maintains the same MSL rating and in-system programmability specifications, ensuring design compatibility and manufacturing process alignment.

Frequently Asked Questions (FAQ)

Q: Can the ATF1502ASV-15AU44 directly replace the ATF1502ASV-20AC44 in existing designs?

A: Yes. Both devices are pin-compatible 44-TQFP packages with identical macrocell and I/O counts. The substitute part operates within the same 3V to 3.6V supply voltage range and maintains in-system programmability specifications.

Q: What is the significance of the improved 15 ns delay specification?

A: The ATF1502ASV-15AU44 provides faster propagation delay (15 ns maximum versus 20 ns), which improves timing performance. Designs originally specified for 20 ns operation will function correctly with the faster substitute part.

Q: Does the extended operating temperature range affect compatibility?

A: No. The ATF1502ASV-15AU44 supports -40°C ~ 85°C operation, which encompasses the original 0°C ~ 70°C range. This extended specification provides greater flexibility for applications across wider environmental conditions.

Q: Are there packaging differences between these parts?

A: Both parts use identical 44-TQFP (10x10) surface-mount packages. The substitute part is supplied in Tray packaging versus the original specification, but the component form factor and pin configuration remain unchanged.

Q: What is the impact of RoHS3 compliance on the substitute part?

A: The ATF1502ASV-15AU44 meets ROHS3 compliance requirements, whereas the original part is RoHS non-compliant. This compliance status is relevant for applications subject to regulatory restrictions on hazardous substances.

Q: Are the programmability specifications identical?

A: Yes. Both parts support in-system programmability with a minimum of 10,000 program/erase cycles, ensuring equivalent design flexibility and field reprogrammability.