ISPLSI2096VL-165LT128

Overview

The ISPLSI2096VL-165LT128 is a high-density, in-system programmable electronic programmable logic device (EPLD) manufactured by Lattice Semiconductor. Designed for 2.5V operation, this component belongs to the SuperFAST PLD family and features 96 macrocells within a 128-pin Thin Quad Flatpack (TQFP) package. The device supports flexible I/O configurations compatible with both 3.3V and 5V interfaces, facilitating integration into mixed-voltage systems. It offers a maximum clock frequency of 60 MHz and a typical propagation delay of 16.5 ns, ensuring rapid signal processing capabilities suitable for complex digital logic applications requiring reliable in-circuit reprogramming.

Feature Summary

• In-system programmability via JTAG interface
• 96 macrocells with 3 dedicated inputs and 96 I/O lines
• Configurable I/O levels supporting 3.3V or 5V operation
• 128-pin TQFP surface-mount package

Applications

• Complex glue logic replacement in mixed-voltage environments
• Address decoding and bus bridging in industrial control systems
• State machine implementation for communication protocols
• Signal multiplexing and demultiplexing in data acquisition hardware

Procurement Notes

Verify the specific voltage grade and package variant when sourcing, as suffixes may indicate temperature ranges or lead-free status. Confirm JTAG compatibility with current programming tools. Check for end-of-life notices given the age of the EPLD architecture. Ensure supply chain authenticity through authorized distributors to avoid counterfeit components. Review humidity sensitivity levels for proper storage and handling procedures during assembly.

Selection Notes

Select this component when 96 macrocells are sufficient for the design complexity and 2.5V core voltage is required. Consider the ISPLSI2096VE series if 3.3V operation is preferred instead. Evaluate pin count requirements carefully, as the 128-pin TQFP limits available pins for other functions. Compare propagation delays against system timing constraints; faster variants like the -100 or -125 exist but may have different power characteristics. Verify that the target board layout accommodates the QFP footprint and thermal requirements.

Part Context

This part is part of the ISPLSI2096V family, which represents Lattice's high-density EPLD offerings designed for cost-effective logic solutions. It serves as a bridge between simple gate arrays and more complex CPLDs/FPGAs. The VL suffix typically denotes the 2.5V core voltage variant, distinguishing it from the VE (3.3V) or standard V series. These devices were widely used before the dominance of modern FPGA architectures for mid-complexity logic tasks.

Replacement Considerations

Direct pin-to-pin replacements include other speed grades within the ISPLSI2096VL series, such as ISPLSI2096VL-100LT128 or ISPLSI2096VL-125LT128, provided timing constraints allow. For 3.3V systems, the ISPLSI2096VE series may be functionally similar but requires voltage level verification. Modern equivalents might involve low-power CPLDs from Lattice's MachXO or CrossLink families, though these require schematic redesign due to architectural differences.