ISPLSI 2128VE-250LT176

Complex Programmable Logic Devices Overview

The ispLSI 2128VE-250LT176 is a high-density, in-system programmable logic device from Lattice Semiconductor. It features 6000 PLD gates, 128 registers, and 128 I/O pins housed in a 176-pin TQFP package. The device utilizes E2CMOS technology to achieve a maximum operating frequency of 250 MHz with a propagation delay of 4.0 ns. It operates at 3.3V, supports IEEE 1149.1 boundary scan testing, and offers non-volatile reprogrammability for flexible system design.

Complex Programmable Logic Devices Feature Summary

• High-performance SuperFAST architecture with 250 MHz fmax and 4.0 ns tpd
• In-system programmability via Boundary Scan Test Access Port (TAP)
• 128 I/O pins with individually programmable open-drain or totem-pole outputs
• Three dedicated clock input pins and two global output enable pins

Complex Programmable Logic Devices Applications

• Complex digital logic replacement
• Address decoding and state machine implementation
• System bus bridging and protocol conversion
• Industrial control systems requiring high-speed logic

Complex Programmable Logic Devices Procurement Notes

Verify the LT176 suffix confirms the 176-pin Thin Quad Flat Package (TQFP) variant. Ensure the -250 speed grade matches the required 250 MHz timing constraints. Confirm lead-free packaging status if RoHS compliance is mandatory for the target assembly process.

Complex Programmable Logic Devices Selection Notes

Select this model when 6000 PLD gates and 128 I/Os are required. The -250 speed grade is necessary for designs exceeding 200 MHz. Consider the 64-I/O version if pin count requirements are lower. Verify that the 3.3V core voltage is compatible with the target system's power supply rails.

Complex Programmable Logic Devices Part Context

This component belongs to the ispLSI 2128VE family, which provides 3.3V low-voltage operation while maintaining compatibility with standard 5V TTL devices. It is functionally and pinout-compatible with the older ispLSI 2128V series, facilitating direct upgrades for existing designs requiring enhanced speed and in-system programming capabilities.

Complex Programmable Logic Devices Replacement Considerations

The ispLSI 2128VE-250LT176 is a drop-in replacement for the ispLSI 2128V-250LT176 due to identical pinouts and functionality. Designers upgrading from the V series should verify that the new ISP capabilities do not conflict with existing board-level test structures.