GAL22CV10-15LNC

Programmable Logic Device Pld Overview

The GAL22CV10-15LNC is a Generic Array Logic (GAL) device manufactured by National Semiconductor, now part of Texas Instruments. It is an Electrically Erasable Programmable Logic Device (EPLD) based on CMOS technology. The component features a 22-pin package and includes 10 dedicated output pins with registered output capability, designated by the 'V' in the model number. The suffix '15' indicates a maximum propagation delay of 15 nanoseconds. The 'NC' suffix typically denotes a ceramic dual in-line package (CDIP), while 'L' often signifies leaded construction. This device allows for user-defined logic functions through electrical erasure and reprogramming.

Programmable Logic Device Pld Feature Summary

• CMOS-based E2CMOS technology for electrically erasable and reprogrammable logic
• 22-pin package configuration with 10 registered outputs
• 15 ns maximum propagation delay speed grade
• Compatible with standard PAL pinouts for direct replacement

Programmable Logic Device Pld Applications

• Complex digital logic replacement in legacy systems
• State machine implementation
• Address decoding and control logic
• Timing generation circuits

Programmable Logic Device Pld Part Context

This component belongs to the GAL family of programmable logic devices introduced by Lattice Semiconductor and later produced by National Semiconductor. These devices were designed to replace fixed-function PALs and PLDs, offering the flexibility of field-programmable logic with the density of larger arrays. The GAL22CV10 specifically targets applications requiring moderate complexity logic with registered outputs.

Programmable Logic Device Pld Replacement Considerations

Direct pin-compatible replacements may include GAL22V10 variants from Lattice Semiconductor or other manufacturers producing equivalent GAL architecture devices. Verify voltage supply requirements and output drive capabilities when substituting. Ensure the replacement supports the required programming voltage and erase cycles if field reprogramming is needed.