LC4064B-5TN44C

Complex Programmable Logic Devices Overview

The LC4064B-5TN44C is a Complex Programmable Logic Device (CPLD) belonging to the ispMACH 4000B family manufactured by Lattice Semiconductor. It features 64 macrocells and supports In-System Programming via JTAG. The device operates with a core voltage of 1.8V and I/O voltages ranging from 2.3V to 2.7V, delivering a maximum propagation delay of 5ns. Packaged in a 44-TQFP (10x10 mm) surface-mount format, it provides 30 I/O pins. This component is designed for low-power applications requiring high performance and flexible logic integration.

Complex Programmable Logic Devices Feature Summary

• 64 Macrocells with individual clock, reset, preset, and clock enable controls
• Maximum propagation delay of 5ns supporting SuperFAST™ performance
• JTAG In-System Programmability (ISP™)
• 5V tolerant I/Os compatible with LVCMOS 3.3, LVTTL, and PCI interfaces

Complex Programmable Logic Devices Applications

• Interface bridging between different voltage domains
• Address decoding and state machine implementation
• Logic replacement for legacy discrete components
• Control logic for embedded systems

Complex Programmable Logic Devices Procurement Notes

Verify the specific speed grade suffix '5' against the official Lattice datasheet to confirm the 5ns propagation delay specification. Confirm package dimensions match the 44-TQFP (10x10mm) outline. Check current product status as older B-series devices may have limited availability or end-of-life status compared to newer V/Z series equivalents.

Complex Programmable Logic Devices Selection Notes

Select this part when 64 macrocells are sufficient for the design logic requirements. Ensure the system power budget accommodates the 1.8V core voltage and 2.3V-2.7V I/O range. Verify that the 44-pin TQFP footprint fits the PCB layout constraints. Consider the 5ns delay if timing closure is critical for synchronous designs.

Complex Programmable Logic Devices Part Context

This component is part of the ispMACH 4000B family, which blends ispLSI 2000 and ispMACH 4A architectures. It shares the same macrocell count and pinout options as other variants like the LC4064V or LC4064C, differing primarily in speed grades and specific voltage operating ranges defined within the family selector guide.

Complex Programmable Logic Devices Replacement Considerations

Direct functional replacements within the same density include other speed grades of the LC4064B series. For upgraded performance, the LC4064V or LC4064Z series offer similar pinouts and macrocell counts with potentially improved speed or lower power characteristics, provided voltage compatibility is verified.