ATF1504AS-15AI44

Overview

The ATF1504AS-15AI44 is a high-performance, electrically-erasable Complex Programmable Logic Device (CPLD) manufactured by Microchip Technology. It features 64 macrocells with up to 40 product terms per macrocell and supports up to 68 inputs depending on the package. The device utilizes In-System Programmability (ISP) via a standard 4-pin JTAG interface. Electrical specifications include a maximum pin-to-pin delay of 15 ns and registered operation frequencies up to 76.9 MHz. It operates on a 3.0V to 3.6V supply for I/O and includes advanced power management features such as automatic standby modes.

Feature Summary

• 64 Macrocells with expandable logic capacity up to 40 product terms per macrocell
• In-System Programmability (ISP) compliant with IEEE Std. 1149.1 via JTAG interface
• Maximum propagation delay of 15 ns with registered operation up to 76.9 MHz
• Advanced power management including automatic standby and pin-controlled power-down modes

Applications

• High-density logic integration replacing TTL, SSI, MSI, LSI, and classic PLDs
• PCI-compliant interface designs requiring high current drivers
• Complex state machine initialization and control applications
• Digital design applications requiring field modifications via software

Procurement Notes

Verify the specific ordering suffix 'AI44' against official Microchip documentation to confirm package type and temperature range. The datasheet lists valid commercial and industrial variants in 44-lead TQFP packages. Ensure compatibility with 3.3V or 5.0V I/O requirements as specified in the design constraints.

Selection Notes

Select this component for designs requiring high-speed logic with 64 macrocells and flexible routing resources. Consider the -15 speed grade for applications needing a maximum 15 ns delay. Verify that the 44-pin TQFP package meets board space constraints and that the operating temperature range aligns with the system environment.

Part Context

This part belongs to the ATF1504AS(L) series of high-performance CPLDs. The series offers various pin counts (44, 68, 84, 100) and packages (PLCC, TQFP, PQFP). The ATF1504AS variant specifically targets high-density applications with enhanced routing switch matrices to improve successful pin-locked design modifications.

Replacement Considerations

Consult Microchip Product Change Notifications (PCN) for potential obsolescence or substitution notices. The ATF1504ASL variant offers low-power standby modes if reduced power consumption is required. Verify pinout compatibility if considering alternative CPLD families.