SN74ACT7882-15PN

FIFOs Memory Overview

The SN74ACT7882-15PN 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 clock frequencies up to 67 MHz. The component features independent asynchronous inputs and outputs, allowing read and write operations to be synchronized to separate system clocks. It provides an access time of 11 ns with a 50-pF load and utilizes a shrink quad flat package.

FIFOs Memory Feature Summary

• Supports independent read and write synchronization via dedicated clocks
• Includes programmable almost-full/almost-empty flag functionality
• Provides half-full, input-ready, and output-ready status flags
• Enables cascading for word width and depth expansion

FIFOs Memory Applications

• Buffering data between asynchronous systems
• Synchronizing data rates in communication interfaces
• Memory buffering in digital signal processing circuits

FIFOs Memory Procurement Notes

Verify the specific suffix PN indicates the shrink quad flat package configuration. Confirm the -15 speed grade aligns with the required 67 MHz operational frequency. Ensure the design accommodates the specified operating temperature range of 0°C to 70°C. Check for RoHS compliance requirements relative to the manufacturing date.

FIFOs Memory Selection Notes

Select this component when a 2048 x 18 bit FIFO buffer is required with independent clock domains. The -15 speed grade suits applications needing high-frequency operation up to 67 MHz. Consider pin-to-pin compatibility with SN74ACT7881 and SN74ACT7811 if alternative logic families are needed. Verify package availability matches the PCB footprint constraints.

FIFOs Memory Part Context

This device belongs to the Texas Instruments Widebus family of logic integrated circuits. It is part of the SN74ACT series, designed for advanced CMOS technology. The component serves as a specialized storage element for managing data flow in complex digital systems requiring precise timing control.

FIFOs Memory Replacement Considerations

SN74ACT7881

FIFOs Memory FAQ

How is the almost-full/almost-empty flag boundary defined?

The boundary is defined by an offset value (X) that can be programmed during a reset cycle using the DAF input or set to the default value of 256.

What is the function of the IR and OR flags?

The Input-Ready (IR) flag indicates when the FIFO is not full, while the Output-Ready (OR) flag indicates when the FIFO is not empty.