GAL16V8QS-15QVC

Programmable Logic Device Pld Overview

The GAL16V8QS-15QVC is a Complex Programmable Logic Device (CPLD) belonging to the GAL16V8 family, originally manufactured by National Semiconductor. It features a high-density architecture with 16 inputs and 8 outputs, designed for general-purpose logic applications. The device operates at a maximum clock frequency of 45.5 MHz and supports a supply voltage range typical for 5V CMOS logic. It utilizes an EEPROM technology for non-volatile programming, allowing for repeated reconfiguration without the need for UV erasure. The component is housed in a 20-pin PLCC package, providing a compact solution for embedded control and interface tasks.

Programmable Logic Device Pld Feature Summary

• EEPROM-based non-volatile memory allows for electrical erasure and reprogramming.
• High-speed performance with a propagation delay of 15 ns and max clock frequency of 45.5 MHz.
• Flexible I/O configuration with 16 dedicated inputs and 8 output macrocells.
• Compatible with standard 5V CMOS logic levels.

Programmable Logic Device Pld Applications

• General-purpose digital logic replacement for discrete gates.
• Address decoding and chip select generation in microprocessor systems.
• State machine implementation for control logic.
• Interface translation between different logic families.

Programmable Logic Device Pld Part Context

This component is part of the GAL16V8 series, which was widely adopted in the late 1980s and 1990s as a drop-in replacement for fixed-function PALs. National Semiconductor's version shares pin compatibility with other manufacturers' GAL16V8 devices, facilitating design reuse across different supply chains. The 'QS' suffix typically denotes specific speed grades or packaging variations within the product line.

Programmable Logic Device Pld Replacement Considerations

Direct pin-compatible replacements include the Lattice GAL16V8D and Atmel GAL16V8B. When substituting, verify that the target device supports EEPROM technology if field reprogrammability is required. Ensure the new component meets the same 15ns speed grade and 5V operating voltage specifications.