ISPGAL22LV10-4LJ

Programmable Logic Device Pld Overview

The ISPGAL22LV10-4LJ is a Simple Programmable Logic Device (SPLD) from Lattice Semiconductor, belonging to the ispGAL22LV10 family. It utilizes Low Voltage E2CMOS technology and operates within a supply voltage range of 3.0 V to 3.3 V. The device features 22 input/output pins and includes 10 macrocells. Key electrical specifications include a maximum propagation delay of 4 ns and a maximum operating frequency of 250 MHz. It is housed in a PLCC-28 package and supports surface mount installation. The component is designed for commercial temperature ranges, functioning between 0°C and +75°C.

Programmable Logic Device Pld Feature Summary

• Incorporates In-System Programmability (ISP) via JTAG interface for flexible field updates.
• Utilizes Low Voltage E2CMOS process for reduced power consumption compared to 5V architectures.
• Provides high-speed performance with a 4 ns maximum propagation delay.
• Features 22 I/Os and 10 macrocells suitable for complex logic replacement.

Programmable Logic Device Pld Applications

• Replacement for legacy GAL22V10 devices in existing designs.
• Address decoding and bus interfacing in embedded systems.
• State machine implementation for control logic.
• Signal buffering and protocol conversion.

Programmable Logic Device Pld Procurement Notes

This component is identified as End-of-Life (EOL) by the manufacturer. Availability is restricted, and sourcing may require checking secondary distributors or surplus markets. Verify RoHS compliance status carefully, as older production runs may not meet current environmental standards. Confirm the specific suffix 'LJ' corresponds to the required lead frame and moisture sensitivity level before procurement.

Programmable Logic Device Pld Selection Notes

Select this part when an ISP-capable upgrade from a standard GAL22V10 is required without changing the pinout. Ensure the design operates at 3.3V; if 5V operation is necessary, consider the non-LV variant. The 4ns speed grade is suitable for moderate-frequency digital logic. Verify that the PLCC-28 package fits the PCB footprint constraints.

Programmable Logic Device Pld Part Context

The ISPGAL22LV10-4LJ is part of Lattice's mature ispGAL family, bridging traditional PAL/GAL logic with modern programmability. It serves as a direct pin-compatible drop-in replacement for the industry-standard GAL22V10, offering the advantage of reprogrammability while maintaining low cost and simplicity for basic logic applications.

Programmable Logic Device Pld Replacement Considerations

Direct pin-compatible replacements are limited due to the EOL status. Designers should evaluate newer Lattice CPLDs such as the MachXO or CrossLink-N families for long-term supply assurance, though these will require schematic and layout modifications.