LC4032B-5T44I

Overview

The LC4032B-5T44I is a Complex Programmable Logic Device (CPLD) belonging to the ispMACH 4000V/B/C/Z family, manufactured by Lattice Semiconductor Corporation. It features a high-density architecture with 32 macrocells and supports In-System Programmability (ISP) via JTAG. The device operates within a supply voltage range of 2.5 V to 3.6 V and utilizes a 44-pin Thin Quad Flat Package (TQFP) with a 10 mm x 10 mm footprint. Key electrical specifications include a maximum operating frequency (fMAX) of 250 MHz and a typical propagation delay (tpd) of 2.5 ns.

Feature Summary

• High-performance SuperFAST architecture with fMAX up to 250 MHz and tpd of 2.5 ns
• Integrated 32 macrocells supporting individual clock reset, preset, and enable controls
• 5 V tolerant I/Os compatible with LVCMOS 3.3, LVTTL, and PCI interfaces
• JTAG-based In-System Programmability (ISP) for flexible configuration

Applications

• General-purpose logic replacement in industrial control systems
• Interface bridging between different voltage domains (e.g., 5V to 3.3V)
• State machine implementation in embedded systems
• Address decoding and bus buffering applications

Procurement Notes

Verify the specific suffix 'B' indicates the 2.5 V core voltage variant when sourcing replacements. Confirm package integrity for the TQFP-44 form factor during inspection. Check RoHS compliance status as older batches may differ from current manufacturing standards. Ensure ESD precautions are taken due to CMOS sensitivity. Validate that the required speed grade (-5) meets the target system timing constraints.

Selection Notes

Select this component when a moderate density solution with 32 macrocells is required. The -5 speed grade provides a balance between performance and power consumption. Consider the 5 V tolerant I/O capability if interfacing with legacy 5 V logic without level shifters. Verify that the 44-pin TQFP package fits the available PCB real estate compared to BGA alternatives in the same family.

Part Context

This part is part of the ispMACH 4000V/B/C/Z family, which blends architectures from previous ispLSI 2000 and ispMACH 4A series. The 'B' designation specifically refers to the 2.5 V core voltage operation, distinguishing it from the 3.3 V (V) or 1.8 V (C) variants. The family offers global routing pools to ensure predictable timing and first-time-fit success rates.

Replacement Considerations

Direct functional equivalents within the same package include other speed grades of the LC4032B series, such as LC4032B-7T44I, though with reduced maximum frequency. Cross-family migration to newer Lattice CPLDs requires schematic and code verification.