SN74ACT7882-20PN

FIFOs Memory Overview

The SN74ACT7882-20PN is a synchronous first-in, first-out memory device organized as 2048 words by 18 bits. It operates within a supply voltage range of 4.5 V to 5.5 V and supports data rates up to 50 MHz with an access time of 13 ns. The component utilizes independent asynchronous inputs and outputs, allowing read and write operations to be synchronized to separate system clocks. It features programmable status flags including almost-full/almost-empty, half-full, input-ready, and output-ready indicators.

FIFOs Memory Feature Summary

• Supports independent read and write clock synchronization for asynchronous bus interfacing
• Includes programmable almost-full/almost-empty flag boundary configuration
• Provides comprehensive status monitoring via half-full, input-ready, and output-ready flags
• Enables cascading expansion in both word width and word depth

FIFOs Memory Applications

• Buffering data between systems operating at different clock frequencies
• Synchronizing data transfer across asynchronous digital interfaces
• Implementing wide-bus memory storage in high-speed logic circuits

FIFOs Memory Procurement Notes

Verify the specific suffix PN corresponds to the 80-pin shrink quad flat package when sourcing. Confirm the -20 speed grade matches the required 50 MHz operational frequency for the target design. Ensure the procurement channel provides active production data sheets consistent with SCAS445C revisions.

FIFOs Memory Selection Notes

Select this component when a 2048 x 18 bit FIFO buffer is required with independent clock domains. The ACT series offers higher drive capability compared to standard AC logic. Consider the 80-pin package constraints for PCB layout if space is limited relative to the 68-pin PLCC alternative.

FIFOs Memory Part Context

This device belongs to the Texas Instruments Widebus family of logic components. It is designed for applications requiring large data buffers with flexible clocking options. The part is pin-to-pin compatible with related models such as the SN74ACT7881 and SN74ACT7811, facilitating direct upgrades or functional swaps in existing designs.

FIFOs Memory Replacement Considerations

The SN74ACT7882-15PN and SN74ACT7882-30PN are confirmed substitutes offering faster and slower timing specifications respectively. These variants maintain identical pinouts and functionality while differing only in maximum clock frequency capabilities.