LC4256V-75T176C

Complex Programmable Logic Devices Overview

The LC4256V-75T176C is a complex programmable logic device (CPLD) from the Lattice ispMACH 4000VE family. It features 256 macrocells organized into 16 logic array blocks and supports up to 138 general-purpose I/O pins. The device operates at a maximum frequency of 322 MHz with a typical propagation delay of 7.5 ns. It functions within a supply voltage range of 3.0 V to 3.6 V, consuming approximately 12.5 mA of operating current. The component is rated for industrial temperature ranges from -40°C to +85°C.

Complex Programmable Logic Devices Feature Summary

• High-density architecture with 256 macrocells and 16 logic array blocks
• Supports high-speed operation up to 322 MHz
• Non-volatile configuration retains design data without external memory
• In-system programmability via JTAG interface

Complex Programmable Logic Devices Applications

• Address decoding and bus bridging in embedded systems
• Glue logic replacement for legacy system integration
• Power-on reset generation and supervisor circuits
• Clock distribution and buffering applications

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix codes against official Lattice documentation to confirm package type and temperature grade. Ensure compatibility with existing board footprints for TQFP or VQFP packages. Confirm RoHS compliance status through the manufacturer's latest product change notifications. Validate that the selected variant meets the required I/O count and speed specifications for the target application.

Complex Programmable Logic Devices Selection Notes

Select this device when non-volatile logic is required without external configuration flash. Compare macrocell counts against alternative CPLDs to ensure sufficient logic resources. Evaluate power consumption requirements as static current varies by package. Consider pin count flexibility if fewer I/Os are needed, potentially allowing cost reduction with lower-density variants in the same series.

Complex Programmable Logic Devices Part Context

This component belongs to the ispMACH 4000VE family, designed for high-performance, low-power applications. It utilizes Lattice's advanced CMOS technology to deliver fast switching speeds while maintaining low power dissipation. The family is known for its reliability and ease of use in mixed-signal environments, offering a robust solution for designers needing flexible, reprogrammable logic.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements must match the 256 macrocell density and similar I/O capabilities. Verify pin-to-pin compatibility if substituting within the same package style. Check for equivalent propagation delays and supply voltage ranges to ensure functional parity. Consult Lattice's obsolescence notices for potential end-of-life status before finalizing substitutions.