AT22LV10-20SI

Overview

The AT22LV10-20SI is a low-voltage UV-erasable programmable logic device (PLD) manufactured by Microchip Technology. It features the familiar 22V10 architecture with 22 inputs and 10 bidirectional I/O lines organized into macrocells. The device operates within a supply voltage range of 3.0V to 5.5V, supporting both CMOS and TTL compatible interfaces. It delivers high-speed performance with a maximum propagation delay of 20 ns at VCC = 3.0V. The component is housed in a 24-lead Plastic Gull-Wing Small Outline (SOIC) package and is rated for industrial temperature operation from -40°C to +85°C.

Feature Summary

• High-speed operation with 20 ns maximum propagation delay at 3.0V
• Wide power supply range from 3.0V to 5.5V suitable for battery systems
• Industrial temperature range (-40°C to +85°C)
• UV-erasable reprogrammability with security fuse protection

Applications

• Battery-powered systems requiring low-power logic
• General-purpose complex logic replacement
• State machine implementation with synchronous preset and asynchronous reset capabilities

Procurement Notes

Verify the ordering suffix 'SI' corresponds to the 24-lead SOIC package and Industrial temperature grade. Confirm the specific speed grade '-20' matches the required 20 ns timing constraints for the target design. Ensure UV erasure equipment compatibility if field reprogramming is planned.

Selection Notes

Select this part when a 22V10-compatible architecture is needed with industrial temperature coverage and surface-mount packaging. Compare against the AT22LV10L variant if lower static power consumption is critical, noting that the standard AT22LV10 offers higher drive current capability. Verify pinout compatibility with existing PCB layouts designed for PLCC or PDIP packages.

Part Context

This component belongs to the AT22LV10 family of low-voltage UV EPROM PLDs. It shares the same logical architecture as the commercial variants but is qualified for extended temperature ranges. The 'SI' suffix specifically denotes the SOIC surface-mount package configuration within the industrial temperature tier.

Replacement Considerations

Direct functional substitutes include other AT22LV10-20 variants with different packages (e.g., AT22LV10-20PI for PDIP). Cross-family replacements require verification of pin compatibility and logic density.