LC4256B-75FN256AI

Complex Programmable Logic Devices Overview

The LC4256B-75FN256AI is a Complex Programmable Logic Device (CPLD) belonging to the ispMACH 4000B family. It features 16 Logic Array Blocks and 256 macrocells, providing 128 I/O pins within a 256-pin FineLine BGA package. The device supports in-system programming and operates with an internal supply voltage range of 2.3V to 2.7V. Maximum propagation delay is specified at 7.5ns, with a junction temperature operating range of 0°C to +90°C. The component is RoHS compliant and classified as moisture sensitivity level 3.

Complex Programmable Logic Devices Feature Summary

• 256 Macrocells organized into 16 Logic Array Blocks
• In-system programmable via JTAG interface
• 7.5ns maximum propagation delay
• 128 available I/O pins

Complex Programmable Logic Devices Applications

• High-density logic replacement
• Bus protocol bridging
• Address decoding and control logic

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'I' against official Lattice documentation to confirm industrial temperature rating specifications. Confirm current product status, as this model may be obsolete or superseded by newer iterations within the same family. Ensure compatibility with existing board layouts for the 256-pin FPBGA footprint.

Complex Programmable Logic Devices Selection Notes

Select this component when 256 macrocells are required with high-speed performance under 7.5ns. Verify that the system power supply strictly adheres to the 2.3V–2.7V internal voltage requirement. Consider the 128 I/O count against pin availability requirements for the target application design.

Complex Programmable Logic Devices Part Context

This part belongs to the ispMACH 4000B series, designed for low-power, high-performance CPLD applications. It serves as a successor to earlier ispMACH 4000 variants, offering improved speed and density while maintaining backward compatibility with standard programming interfaces and tools.

Complex Programmable Logic Devices Replacement Considerations

Check for LC4256B-75FN256AC if commercial temperature grade is acceptable. Verify LC4256V series variants for potential pin-compatible alternatives with different voltage or temperature specifications.