LC4032B-75T44I

Overview

The LC4032B-75T44I is a Complex Programmable Logic Device (CPLD) belonging to the ispMACH 4000B family manufactured by Lattice Semiconductor. It features 32 macrocells and 36 logic blocks, providing high-density programmability in a compact form factor. The device supports system-in-programmability via EEPROM technology, allowing for non-volatile configuration without external memory. Key electrical specifications include a maximum operating frequency of 111 MHz and a propagation delay of 7.5 ns. It operates within a voltage range of 3.0 V to 3.6 V and supports JTAG boundary scan testing.

Feature Summary

• ispMACH 4000B architecture with 32 macrocells and 36 logic blocks
• System-in-programmable EEPROM technology for non-volatile configuration
• Maximum operating frequency of 111 MHz with 7.5 ns propagation delay
• Supports JTAG boundary scan and in-system programming

Applications

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

Procurement Notes

Verify the package type matches the required footprint, as this model typically utilizes a TQFP-44 package. Confirm RoHS compliance status, as older revisions may differ from current manufacturing standards. Ensure the supplier provides valid datasheets referencing the specific 'B' series variant to guarantee accurate timing parameters and pinout compatibility.

Selection Notes

Select this component when design requirements fit within 32 macrocells and 30 user I/Os. The 75 speed grade indicates a 7.5 ns maximum propagation delay, suitable for moderate-speed applications. Consider the TQFP-44 package constraints regarding board space and thermal dissipation compared to BGA alternatives in the same family.

Part Context

This part belongs to the Lattice ispMACH 4000B family, which succeeded the original ispMACH 4000 series. It offers improved performance and density over previous generations while maintaining backward compatibility with existing design tools. The 'B' suffix denotes specific process improvements and feature enhancements within the 4000 product line.

Replacement Considerations

Direct replacements include other variants within the ispMACH 4000B family such as LC4032V or LC4032Z if speed grades allow. Cross-family migration to ispMACH 4000ZE requires significant design re-verification due to architectural differences.