PALCE22V10Q-25JC/4

Overview

The PALCE22V10Q-25JC/4 is a Complex Programmable Logic Device (CPLD) manufactured by Lattice Semiconductor Corporation. It belongs to the PALCE22V10 family and features 22 input/output pins with 10 macrocells. The device operates at a maximum propagation delay of 25 ns and supports a supply voltage range of 4.75 V to 5.25 V. It is housed in a 28-pin PLCC package and is designed for surface-mount installation. The component is classified as an EE PLD and is currently marked as obsolete.

Feature Summary

• Contains 10 macrocells for complex logic implementation
• Supports up to 22 I/O lines
• Maximum propagation delay of 25 ns
• Operates within a 4.75 V to 5.25 V supply voltage range

Applications

• General-purpose digital logic replacement
• Address decoding circuits
• Bus interface control logic

Procurement Notes

This component is officially listed as obsolete by the manufacturer. Availability is restricted to surplus or secondary market channels. Verification of authenticity and physical condition is critical when sourcing from non-direct suppliers due to the end-of-life status.

Selection Notes

Designers should consider modern CPLD alternatives from Lattice, such as the MachXO or CrossLink-NX families, which offer enhanced features and active production status. The GAL22V10 series may serve as a functional pin-compatible substitute in some legacy designs, though electrical characteristics differ.

Part Context

The PALCE22V10 series represents an evolution of the earlier GAL22V10 architecture, offering higher density and improved performance. This specific part number denotes the commercial temperature grade variant with a 25 ns speed grade and PLCC packaging.

Replacement Considerations

Direct pin-to-pin replacements are limited due to the obsolete status. Potential substitutes include the GAL22V10D-25QJ or newer Lattice CPLDs like the LC4032V, requiring schematic review for compatibility.