LC4128B-5TN100I

Complex Programmable Logic Devices Overview

The LC4128B-5TN100I is a high-density Complex Programmable Logic Device (CPLD) from Lattice Semiconductor's ispMACH 4000B family. It features 128 macrocells and supports In-System Programming (ISP). The device operates with supply voltages of 3.3V, 2.5V, or 1.8V and utilizes CMOS technology. It is housed in a 100-pin Thin Quad Flat Package (TQFP) with a maximum propagation delay of 5ns and a maximum operating frequency of 200MHz.

Complex Programmable Logic Devices Feature Summary

• 128 Macrocells with flexible architecture supporting complex logic functions
• In-System Programmability (ISP) for easy updates without removing the chip
• Multi-voltage support: 3.3V, 2.5V, and 1.8V I/O options
• High performance with 5ns max propagation delay and 200MHz fmax

Complex Programmable Logic Devices Applications

• Bus bridging and protocol conversion
• Address decoding and control logic
• State machine implementation
• Glue logic replacement in mixed-voltage systems

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'B' indicates the correct generation within the LC4128 series. Confirm the '5' speed grade matches system timing requirements. Ensure the 'TN100I' designation corresponds to the industrial temperature range (-40°C to +85°C) and TQFP-100 package. Check RoHS compliance status as manufacturing processes may vary by production batch.

Complex Programmable Logic Devices Selection Notes

Select this component when 128 macrocells are sufficient for the design complexity. The 5ns speed grade is suitable for moderate-speed digital interfaces. Consider the TQFP-100 package if board space allows for surface-mount assembly. Verify that the target system voltage aligns with the device's 1.8V/2.5V/3.3V capabilities.

Complex Programmable Logic Devices Part Context

This part belongs to the Lattice ispMACH 4000B family, designed for high-density, low-power applications. It serves as a successor to earlier CPLD generations, offering improved performance and flexibility. The LC4128 variant provides a balance of density and pin count for general-purpose logic applications.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements include other LC4128 variants with different speed grades or packages, such as LC4128B-5T100I (PQFP) or LC4128B-7TN100I (slower speed). Cross-family upgrades like the LC4128ZC series offer lower power consumption but require verification of pin compatibility and timing differences.