SN74ACT7882-20FN

FIFOs Memory Overview

The SN74ACT7882-20FN 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 a 68-pin plastic leaded chip carrier (PLCC) package and is characterized for operation in temperatures ranging from 0°C to 70°C.

FIFOs Memory Feature Summary

• Supports independent asynchronous inputs and outputs while allowing read and write operations to be synchronized to separate system clocks.
• Features programmable almost-full/almost-empty flags that can be defined during reset cycles using user-defined or default offset values.
• Provides input-ready, output-ready, and half-full status flags to monitor FIFO occupancy levels.
• Capable of cascading expansion in both word width and word depth through direct connection of control signals.

FIFOs Memory Applications

• Buffering data between systems operating at different clock speeds
• Synchronizing data transfers across independent clock domains
• Implementing wide-bus interface storage solutions

FIFOs Memory Procurement Notes

Verify the specific -20 speed grade suffix against current Texas Instruments documentation to confirm performance parameters. Ensure the 68-pin PLCC footprint matches the target PCB layout. Confirm RoHS compliance status and check for alternative packages if surface-mount constraints require a different form factor.

FIFOs Memory Selection Notes

Select this component when a 2K x 18 synchronous FIFO architecture is required with independent read and write clock domains. Consider the 13 ns access time and 50 MHz maximum frequency for timing compatibility. Evaluate the need for programmable flag offsets and cascading capabilities for complex data buffering requirements.

FIFOs Memory Part Context

This device belongs to the Texas Instruments Widebus family of logic circuits. It shares pin-to-pin compatibility with the SN74ACT7881 and SN74ACT7811 models, facilitating design reuse across different memory depths and widths within the same product line.

FIFOs Memory Replacement Considerations

SN74ACT7882-15FN offers faster timing specifications. SN74ACT7882-30FN provides slower switching characteristics. SN74ACT7881-30FN serves as a compatible alternative with reduced memory depth.