LC4256C-75T176I

Complex Programmable Logic Devices Overview

The LC4256C-75T176I is a Complex Programmable Logic Device (CPLD) belonging to the ispMACH 4000C family, manufactured by Lattice Semiconductor. It features 256 macrocells and 128 I/O lines housed in a TQFP-176 package. The device operates at a maximum frequency of 111 MHz with a propagation delay of 7.5 ns. It supports In-System Programming (ISP) via JTAG and functions within an industrial temperature range of -40°C to +105°C.

Complex Programmable Logic Devices Feature Summary

• High-density architecture with 256 macrocells and 16 Logic Array Blocks (LABs).
• Supports In-System Programming (ISP) using IEEE 1149.1 JTAG boundary-scan interface.
• Industrial temperature grade rated for operation between -40°C and +105°C.
• Maximum operating frequency of 111 MHz with 7.5 ns propagation delay.

Complex Programmable Logic Devices Applications

• Complex logic replacement in industrial control systems.
• Protocol bridging and translation in embedded interfaces.
• Address decoding and bus buffering in high-density digital designs.

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'I' confirms the industrial temperature range (-40°C to +105°C) as per the datasheet. Confirm the package type is TQFP-176. Check for RoHS compliance status on the manufacturer's official documentation before procurement.

Complex Programmable Logic Devices Selection Notes

Select this component when 256 macrocells are required with a high count of I/O pins (128). The 7.5 ns speed grade is suitable for moderate-speed applications. Ensure the design accommodates the TQFP-176 footprint and requires ISP capability for field updates.

Complex Programmable Logic Devices Part Context

This part belongs to the ispMACH 4000C family, which offers 3.3V core voltage options. It serves as a high-density solution compared to lower-end CPLDs, providing significant logic capacity in a standard QFP package for cost-sensitive industrial applications.

Complex Programmable Logic Devices Replacement Considerations

Direct pin-compatible replacements within the same family include other speed grades of the LC4256C series or variants from the LC4256V/B families if voltage levels and timing requirements allow. Verify package compatibility for TQFP-176.