LC4064B-5TN44I

Complex Programmable Logic Devices Overview

The LC4064B-5TN44I is a Complex Programmable Logic Device (CPLD) belonging to the Lattice ispMACH 4000B family. It integrates 64 macrocells organized into 4 Logic Array Blocks (LABs). The device features a maximum propagation delay of 7.5 ns and supports a maximum operating frequency of 400 MHz. It operates with a core voltage of 2.3 V to 2.7 V and includes 5 V tolerant I/Os. The component utilizes EEPROM memory for non-volatile configuration and supports In-System Programming (ISP) via JTAG. It is housed in a 44-TQFP package with dimensions of 10x10 mm.

Complex Programmable Logic Devices Feature Summary

• 64 Macrocells across 4 LABs with 80 product terms per macrocell
• Superfast performance with 7.5 ns max propagation delay and 400 MHz frequency
• Non-volatile EEPROM configuration supporting In-System Programming (ISP)
• 5 V tolerant I/Os compatible with LVCMOS 3.3, LVCMOS 2.5, LVCMOS 1.8, and LVTTL standards

Complex Programmable Logic Devices Applications

• High-density logic replacement in industrial control systems
• Interface bridging between different voltage domains
• State machine implementation in embedded systems
• Address decoding and bus buffering applications

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'I' indicates the industrial temperature range (-40°C to +85°C or +105°C depending on exact datasheet revision). Confirm availability status as the LC4064B series may be subject to lifecycle changes. Ensure design compatibility with the 44-TQFP footprint and 0.5 mm pin pitch.

Complex Programmable Logic Devices Selection Notes

Select this model when 64 macrocells are sufficient for the design logic density. Choose the -5 speed grade for 7.5 ns timing requirements. Verify that the 44-pin TQFP package fits the board space constraints. Consider the LC4064C variant if lower 1.8V core voltage operation is required instead of the 2.5V core of the B-series.

Complex Programmable Logic Devices Part Context

This component is part of the ispMACH 4000B family, which bridges the gap between complex PLDs and FPGAs. It offers high density and low power consumption compared to previous generations like the ispLSI 2000. The B-series specifically targets cost-sensitive applications requiring non-volatile configuration without external memory.

Complex Programmable Logic Devices Replacement Considerations

Direct functional replacements within the same package include other variants from the LC4064B family such as LC4064B-75TN44I (same speed/package) or LC4064B-10TN44I (slower speed). Cross-family migration to LC4064C requires verification of voltage level differences.