ATF1508ASVL-20AI100 Equivalent & Substitute Parts

Part Overview

The ATF1508ASVL-20AI100 is a Complex Programmable Logic Device (CPLD) from Microchip Technology's ATF15xx series, featuring 128 macrocells and 80 I/O pins in a 100-TQFP package. This device is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and production requirements. The part operates with a maximum propagation delay of 20 ns and supports in-system programming with a minimum of 10,000 program/erase cycles.

Substiute Parts

ATF1508ASVL-20AI100

Microchip TechnologyIn Stock: 2155ATF1508ASVL-20AI100 Datasheet

Current PartRFQ

ATF1508ASVL-20AU100

Microchip TechnologyIn Stock: 911ATF1508ASVL-20AU100 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ATF1508ASVL-20AI100 is determined by strict equivalence across the following critical parameters:

• Macrocell Count: 128 macrocells (functional logic capacity)
• I/O Pin Count: 80 I/O pins (interface capability)
• Propagation Delay: 20 ns maximum (timing performance)
• Supply Voltage: 3V ~ 3.6V (power compatibility)
• Operating Temperature Range: -40°C ~ 85°C (thermal envelope)
• Package Type: 100-TQFP (physical and electrical footprint)
• Programmable Architecture: In System Programmable with minimum 10K cycles (programming capability)

The ATF1508ASVL-20AU100 meets all substitution criteria, differing only in packaging format (Tray vs. unspecified for the main part) and product status (Active vs. Obsolete).

Parameter Comparison

Engineering Selection Recommendations

The ATF1508ASVL-20AU100 is the direct functional equivalent of the ATF1508ASVL-20AI100. Selection between these parts should be based on the following factors:

Product Status: The ATF1508ASVL-20AU100 carries Active product status, ensuring continued manufacturer support and availability. The ATF1508ASVL-20AI100 is classified as Obsolete, limiting future procurement options.

Regulatory Compliance: The ATF1508ASVL-20AU100 is ROHS3 Compliant, meeting current environmental and regulatory requirements. The ATF1508ASVL-20AI100 is RoHS non-compliant, which may restrict use in applications subject to RoHS directives.

Electrical and Functional Equivalence: Both parts are electrically and functionally identical across all critical parameters, including macrocell count, I/O configuration, timing specifications, voltage supply, and operating temperature range.

For new designs or production continuity, the ATF1508ASVL-20AU100 is the appropriate selection. For legacy system maintenance where the original part number is mandated, the ATF1508ASVL-20AI100 remains available in current inventory.

Frequently Asked Questions (FAQ)

Q: Are the ATF1508ASVL-20AI100 and ATF1508ASVL-20AU100 pin-compatible?

A: Yes. Both devices use the 100-TQFP package with identical pin assignments, macrocell architecture, and I/O configuration. Direct PCB substitution is possible without layout modifications.

Q: What is the difference between the two part numbers?

A: The primary differences are product status (Obsolete vs. Active), RoHS compliance (non-compliant vs. ROHS3 Compliant), and packaging format (unspecified vs. Tray). Electrical and functional specifications are identical.

Q: Can the ATF1508ASVL-20AU100 replace the ATF1508ASVL-20AI100 in existing designs?

A: Yes. The ATF1508ASVL-20AU100 meets all electrical, timing, and functional requirements of the ATF1508ASVL-20AI100. Firmware and design files require no modification.

Q: What does the "20" in the part number indicate?

A: The "20" specifies the maximum propagation delay (tpd) of 20 nanoseconds, which defines the timing performance of the device.

Q: Are there any thermal or voltage differences between these parts?

A: No. Both parts operate within the same voltage supply range (3V ~ 3.6V) and temperature range (-40°C ~ 85°C). Thermal and electrical characteristics are identical.

Q: What is the significance of the MSL rating?

A: Both parts carry MSL 3 (168 Hours), indicating moisture sensitivity level. This specifies the maximum time the device can be exposed to ambient conditions (30°C, 85% RH) before soldering. Proper storage and handling procedures must be followed.