LC4256B-3TN100C

Complex Programmable Logic Devices Overview

The LC4256B-3TN100C is a Complex Programmable Logic Device (CPLD) belonging to the ispMACH 4000 family, manufactured by Lattice Semiconductor Corporation. It features 256 macrocells organized into 8 Logic Array Blocks (LABs) and provides 64 I/O pins. The device operates within a supply voltage range of 1.8V to 3.6V and supports System In-Programmability (SIPI). It utilizes a 100-pin Thin Quad Flat Package (TQFP) with dimensions of 14x14 mm. The maximum propagation delay is specified at 3 ns, enabling operation up to 333 MHz. The component is rated for an operating temperature range of 0°C to +90°C.

Complex Programmable Logic Devices Feature Summary

• 256 Macrocells across 8 LABs
• Maximum propagation delay of 3 ns
• System In-Programmability (SIPI) support
• 100-TQFP (14x14) surface mount package

Complex Programmable Logic Devices Applications

• High-speed interface bridging
• Address/data buffering
• Protocol conversion logic

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'B' against official Lattice documentation to confirm manufacturing status and exact electrical characteristics, as datasheets often group variants under the base model LC4256. Confirm moisture sensitivity level (MSL) and reflow soldering profiles prior to assembly.

Complex Programmable Logic Devices Selection Notes

Select this component when 256 macrocells are sufficient for the design logic density. The 3 ns speed grade offers higher performance than the 5 ns variant but may consume more power. Ensure the 100-pin TQFP footprint matches the PCB layout constraints.

Complex Programmable Logic Devices Part Context

This part is part of the ispMACH 4000V/4000Z family line. It serves as a non-volatile CPLD solution, retaining configuration without external memory. It is designed for applications requiring low power consumption and high reliability in industrial and consumer electronics.

Complex Programmable Logic Devices Replacement Considerations

Direct pin-to-pin replacements within the same package include other speed grades of the LC4256 series, such as LC4256V-5TN100C or LC4256V-7TN100C, provided timing requirements allow for slower speeds.