ISPLSI-3448-70LB432

Overview

The ISPLSI-3448-70LB432 is a high-density programmable logic device from Lattice Semiconductor's ispLSI 3000 family. It features 20,000 PLD gates and supports up to 224 I/O pins within a PBGA432 package. The device includes 672 registers and utilizes a high-speed global interconnect architecture. It operates on a 5V supply with an internal voltage range of 4.75V to 5.25V. The component offers a maximum propagation delay of 15 nanoseconds and wide input gating capabilities for fast counters.

Feature Summary

• High-density programmable logic structure with 20,000 PLD gates
• Supports up to 224 I/O pins for complex interface requirements
• Integrated high-speed global interconnect for efficient signal routing
• Wide input gating architecture optimized for fast counter applications

Applications

• Complex digital logic implementation in industrial control systems
• Interface bridging between legacy components and modern digital buses
• State machine design requiring high pin count and speed
• Prototyping of custom logic functions in communication equipment

Procurement Notes

Verify the specific suffix LB432 to confirm the 432-ball PBGA package type and lead-free status. Ensure the operating temperature grade matches your system requirements, as commercial variants typically cover 0°C to 70°C. Cross-reference the full part number against official Lattice documentation to distinguish between different speed grades or voltage specifications within the same logical family.

Selection Notes

Select this component when designing systems requiring high I/O density and moderate speed performance. The 20,000 gate count suits complex logic functions that exceed standard GAL capabilities. Consider the PBGA432 package size constraints during PCB layout. Evaluate the 5V operation requirement against other system voltages to determine necessary level shifting or compatibility measures.

Part Context

This device belongs to the ispLSI 3000 series, representing a generation of high-performance PLDs designed for complex logic applications. The series emphasizes flexibility and ease of use through proprietary architecture. These devices bridge the gap between simple discrete logic and more complex FPGAs, offering a cost-effective solution for medium-to-high density logic designs.

Replacement Considerations

Direct substitutes include the ISPLSI-3448-90LB432 for higher speed requirements and the ISPLSI-3448-70FC432 if a different package option is needed. Verify electrical characteristics and pinout compatibility before swapping. Consult Lattice documentation for detailed cross-reference information regarding alternative packages or speed grades.