LC4064B-25T44C

Complex Programmable Logic Devices Overview

The LC4064B-25T44C is a Complex Programmable Logic Device (CPLD) belonging to the Lattice ispMACH 4000B family. It integrates 64 macrocells and supports up to 30 I/O pins within a 44-pin TQFP package. The device features a maximum propagation delay of 25 ns and operates on a single 2.5V supply voltage, enabling low dynamic power consumption. It supports In-System Programming (ISP) via JTAG, allowing for flexible design updates without removing the component from the circuit board.

Complex Programmable Logic Devices Feature Summary

• 64 Macrocells with high-density logic capabilities
• 25 ns maximum propagation delay
• Single 2.5V VCC operating voltage
• In-System Programmability (ISP) via JTAG interface

Complex Programmable Logic Devices Applications

• General-purpose digital logic replacement
• Address/data bus buffering
• Protocol conversion interfaces

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'B' indicates the 2.5V core voltage variant. Confirm the 'T44' designation corresponds to the 44-pin Thin Quad Flat Package (TQFP). Check manufacturing status as older series may be discontinued or subject to last-time buys.

Complex Programmable Logic Devices Selection Notes

Select this model when a 2.5V supply is required instead of the standard 3.3V found in other CPLD families. Ensure the design fits within the 64 macrocell limit and utilizes the available 30 I/Os. Verify that the 25 ns speed grade meets the system timing requirements.

Complex Programmable Logic Devices Part Context

This component is part of the ispMACH 4000B series, which bridges the gap between complex GALs and FPGAs. It offers non-volatile configuration and predictable timing characteristics typical of CPLDs, suitable for cost-sensitive embedded control applications.

Complex Programmable Logic Devices Replacement Considerations

Direct pin-compatible replacements include other 64-macrocell CPLDs in TQFP-44 packages from the same family, such as the LC4064B-25TN44C, provided the temperature range and package thickness specifications match.