LC4032B-75TN44I

Overview

The LC4032B-75TN44I is a Complex Programmable Logic Device (CPLD) from the ispMACH 4000 family, manufactured by Lattice Semiconductor. It features 32 macrocells and supports up to 30 user I/O pins within a 44-pin Thin Quad Flat Package (TQFP). The device operates on a 3.3 V supply voltage with a maximum operating frequency of 111 MHz and a typical propagation delay of 7.5 ns. It utilizes EEPROM technology for non-volatile configuration, allowing for in-system programmability and reprogramming capabilities without external memory components.

Feature Summary

• 32 Macrocells with 30 User I/O Pins
• EEPROM Non-Volatile Configuration Technology
• In-System Programmability (ISP)
• 44-Pin TQFP Surface Mount Package

Applications

• General-purpose logic replacement
• Address decoding and bus bridging
• State machine implementation
• Interface translation between different voltage domains

Procurement Notes

Verify the suffix 'I' indicates the industrial temperature range (-40°C to +85°C), distinct from the commercial 'C' variant. Confirm package integrity upon receipt as moisture sensitivity requires baking if storage conditions were exceeded. Ensure design tools support the specific ispMACH 4000 architecture for accurate compilation.

Selection Notes

Select this component when a moderate density CPLD with non-volatile configuration is required. Compare against the LC4032V or LC4032Z variants if higher performance speeds or different pin counts are needed. Verify that the 3.3 V I/O levels match the target system interfaces or utilize internal level shifters if necessary.

Part Context

This part belongs to the ispMACH 4000 family, designed to replace complex discrete logic gates. It offers high-density logic in small packages, targeting cost-sensitive applications requiring low power consumption and easy integration into existing PCB layouts without additional configuration chips.

Replacement Considerations

Direct functional replacements include the LC4032V-75TN44I and LC4032Z-75TN44I, which share the same pinout and macrocell count but may differ in speed grades or temperature ranges. Cross-family migration to newer Lattice families requires schematic and code adaptation.