ATF1504AS-7JC44

Overview

The ATF1504AS-7JC44 is a high-performance, electrically-erasable Complex Programmable Logic Device (CPLD) manufactured by Microchip Technology. It features 64 macrocells with five product terms each, expandable up to 40 per macrocell via cascade logic. The device operates at a maximum pin-to-pin delay of 7.5 ns and supports registered operation up to 125 MHz. It utilizes EEPROM technology for reprogramming and includes In-System Programmability (ISP) via JTAG. The component is housed in a 44-lead PLCC package and supports both 3.3V and 5.0V I/O configurations.

Feature Summary

• 64 Macrocells with flexible D/T/Latch configurable flip-flops and global control signals
• Maximum 7.5 ns pin-to-pin delay with registered operation up to 125 MHz
• In-System Programmability (ISP) via standard 4-pin JTAG interface
• Supports 3.3V or 5.0V I/O pins with programmable slew rate and open collector options

Applications

• Logic integration replacing TTL, SSI, MSI, LSI, and classic PLDs
• PCI-compliant interface designs requiring high current drivers
• Systems requiring in-field design modifications via software programming

Procurement Notes

Verify the specific suffix 'J' corresponds to the commercial temperature range (0°C to 70°C) as defined in the manufacturer's ordering guide. Confirm the 'C' indicates the 44-lead PLCC package. Ensure the design file explicitly enables the power-down feature if low standby current is required, as this is an optional configuration.

Selection Notes

Select this model for applications requiring a 7.5 ns speed grade within a 44-pin footprint. The 'AS' variant supports both 3.3V and 5.0V supplies, whereas the 'ASL' variant is optimized for lower power consumption with automatic standby modes. Ensure the design compiler allocates the necessary global clock and output enable resources if using the full 64 macrocell capacity.

Part Context

This part belongs to the ATF1504AS family of CPLDs, which share the same core architecture but differ in speed grades, packages, and temperature ranges. The ATF1504AS provides enhanced routing resources compared to previous generations, improving the success rate of pin-locked design modifications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult the manufacturer's official cross-reference tools for equivalent components.