LC4256B-75TN100I

Complex Programmable Logic Devices Overview

The LC4256B-75TN100I is a Complex Programmable Logic Device (CPLD) from the Lattice ispMACH 4000ZE family. It features 256 macrocells organized into 8 Logic Array Blocks (LABs) and provides 64 I/O pins in a TQFP-100 package. The device operates at a supply voltage of 3.3V with a maximum propagation delay of 7.5 ns and a maximum operating frequency of 250 MHz. It supports system-in-programmability via JTAG and functions within an industrial temperature range of -40°C to +85°C.

Complex Programmable Logic Devices Feature Summary

• 256 Macrocells across 8 LABs for high-density logic implementation
• System-in-programmable architecture supporting JTAG interface
• 7.5 ns maximum propagation delay with 250 MHz max frequency
• Industrial temperature grade (-40°C to +85°C)

Complex Programmable Logic Devices Applications

• High-speed data acquisition systems
• Protocol bridging and translation
• Complex glue logic replacement
• Address decoding and control logic

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'B' against current manufacturer documentation, as it may indicate a legacy or obsolete status compared to the 'V' series. Confirm RoHS compliance details directly with the datasheet, as older batches may differ. Ensure the TN100 package matches the target PCB footprint requirements.

Complex Programmable Logic Devices Selection Notes

Select this component when 256 macrocells are sufficient for the design logic density. The 7.5 ns speed grade is suitable for moderate-frequency applications requiring deterministic timing. Compare against the LC4256V variant if newer manufacturing processes or updated specifications are required for long-term production.

Complex Programmable Logic Devices Part Context

This part belongs to the Lattice ispMACH 4000ZE CPLD family, which utilizes non-volatile EEPROM technology. This allows for instant-on functionality without external configuration memory. The family is designed for low-power applications where reprogrammability is needed after initial deployment.

Complex Programmable Logic Devices Replacement Considerations

The LC4256V-75TN100I is a direct functional successor within the same package and pinout. Verify electrical parameter compatibility before substitution.