SN74ACT7811-25PN

FIFOs Memory Overview

The SN74ACT7811-25PN is a 1024-word by 18-bit clocked first-in, first-out (FIFO) memory device manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range of 0°C to 70°C. The component features independent asynchronous inputs and outputs, allowing read and write operations to be synchronized to separate system clocks. It provides fast access times of 25 ns with a 50-pF load and includes programmable almost-full/almost-empty flags, input-ready, output-ready, and half-full status indicators.

FIFOs Memory Feature Summary

• Supports independent asynchronous read and write operations synchronized to separate system clocks
• Features programmable almost-full/almost-empty flag boundaries defined during reset cycles
• Provides comprehensive status monitoring through input-ready, output-ready, and half-full flags
• Capable of cascading expansion in both word width and word depth for custom memory configurations

FIFOs Memory Applications

• High-speed data buffering between asynchronous systems
• Data rate matching in communication interfaces
• Temporary storage in digital signal processing pipelines
• Memory expansion in embedded control systems

FIFOs Memory Procurement Notes

Verify the specific speed grade suffix matches design timing requirements. Confirm package type corresponds to PCB footprint specifications. Check current production status as older variants may be obsolete. Ensure RoHS compliance aligns with environmental regulations. Validate operating temperature range against application thermal constraints.

FIFOs Memory Selection Notes

Select based on required access time and data width compatibility. Consider pin-to-pin alternatives like the SN74ACT7881 series if functional equivalence is needed. Evaluate power dissipation characteristics relative to system thermal management capabilities. Verify that the 80-pin thin quad flat package fits available board space constraints.

FIFOs Memory Part Context

This component belongs to the Widebus family of high-performance FIFO memories from Texas Instruments. It shares functional similarities with the SN74ACT7881, SN74ACT7882, and SN74ACT7884 series, offering pin-to-pin compatibility for design flexibility. The ACT logic family ensures CMOS compatibility with TTL-level inputs while providing faster switching speeds than standard LS or HC families.

FIFOs Memory Replacement Considerations

Public confirmed substitute part numbers include SN74ACT7881, SN74ACT7882, and SN74ACT7884 due to documented pin-to-pin compatibility.