AMPAL22V10JC

Overview

The AMPAL22V10JC is a high-performance Electrically Erasable Programmable Logic Device (EE PLD) manufactured by Vantis Corporation. It utilizes PAL-type architecture implemented in CMOS technology, housed in a standard 24-pin Plastic Dual In-line Package (PDIP). The device features 12 dedicated inputs and 10 I/O lines, providing a total of 22 input pins for complex logic implementation. It supports up to 132 product terms, enabling sophisticated combinational and registered logic functions within each macrocell. Designed for operation at a maximum clock frequency of 35.7 MHz, the component ensures a typical propagation delay of 25 ns. It operates on a single 5 V power supply and is rated for an industrial temperature range from -40 °C to +85 °C.

Feature Summary

• PAL-type EE PLD architecture with 12 dedicated inputs and 10 I/O lines
• CMOS technology offering low power consumption and high noise immunity
• Supports up to 132 product terms for complex logic synthesis
• Typical 25 ns propagation delay with a maximum clock frequency of 35.7 MHz

Applications

• High-speed digital logic replacement for legacy TTL/CMOS circuits
• Address decoding and chip select generation in memory systems
• State machine implementation for control logic applications
• Bus protocol conversion and interface bridging between different logic families

Procurement Notes

Verify the manufacturer origin carefully, as Vantis was formed from the acquisition of Lattice Semiconductor's programmable logic assets. Ensure the specific suffix 'JC' corresponds to the required commercial/industrial temperature rating and package variant. Confirm RoHS compliance status, as older manufacturing runs may not meet current environmental directives. Cross-reference the datasheet revision to ensure pinout compatibility with existing designs.

Selection Notes

Select this component when a design requires more than 10 inputs but fewer than 16, making it more efficient than smaller PLDs like the 16V8. The 25 ns speed grade is suitable for moderate-frequency digital systems. Consider the PDIP24 package only if through-hole mounting is strictly required; otherwise, equivalent surface-mount packages should be evaluated for PCB space constraints. Verify that the 132 product terms are sufficient for the target logic equations before finalizing the part number.

Part Context

The AMPAL series represents Vantis's evolution of the classic PAL architecture into electrically erasable devices, combining the speed of traditional PALs with the reprogrammability of EPLDs. This specific model sits within the 22V10 family, which is widely recognized for its balance of input density and output drive capability. It serves as a direct functional successor to earlier non-erasable PALs, allowing for field modifications without hardware changes.

Replacement Considerations

Direct pin-compatible replacements include the LATTICE GAL22V10JC or AMD AM22V10JC. When substituting, verify that the electrical characteristics, specifically the output drive strength and propagation delays, match the original design requirements. Ensure the programming tool supports the specific voltage levels required for erasing and reprogramming the EEPROM cells.