ISPLSI2128VL-135LT176

Overview

The ISPLSI2128VL-135LT176 is a Complex Programmable Logic Device (CPLD) from the ispLSI 2000V family, manufactured by Lattice Semiconductor. It features 128 macrocells and operates with a maximum system clock frequency of 74 MHz at a -135 speed grade. The device utilizes a 2.5V supply voltage and supports In-System Programmability (ISP). It is housed in a 176-pin Thin Quad Flat Package (TQFP) with dimensions of 24x24 mm. This component belongs to the high-density PLD category designed for superfast logic applications.

Feature Summary

• 128 Macrocells with 128 I/O pins
• Maximum system clock frequency of 74 MHz (-135 speed grade)
• 2.5V operating voltage
• In-System Programmability (ISP) support

Applications

• Logic replacement for complex discrete logic circuits
• Interface bridging between different voltage domains
• State machine implementation in embedded systems

Part Context

This part belongs to the ispLSI 2000V family, which are 2.5V In-System Programmable SuperFast High Density PLDs. The 'VL' suffix indicates the 2.5V variant within the ispLSI line. The '-135' denotes the -135 speed grade, and 'LT176' specifies the Lead-free TQFP-176 package. These devices are successors to the 3.3V ispLSI 2000 series, offering lower power consumption while maintaining high performance.

Replacement Considerations

Direct pin-to-pin replacements within the same package and functionality require checking other speed grades in the ispLSI 2128VL series (e.g., ISPLSI2128VL-150LT176 for slower timing or ISPLSI2128VL-100LT176 if available). Note that the ispLSI 2000V family has been largely superseded by newer Lattice architectures such as the MachXO or CrossLink families for new designs.