SN74ACT2226DW

FIFOs Memory Overview

The SN74ACT2226DW is a dual first-in, first-out memory device manufactured by Texas Instruments. It contains two independent FIFOs organized as 64 words by 1 bit each. The component utilizes low-power advanced CMOS technology and operates within a supply voltage range of 4.5 V to 5.5 V. It supports clock frequencies up to 22 MHz with access times of 20 ns. The device is packaged in a 24-pin Small-Outline Integrated-Circuit (SOIC) format and is characterized for operation from -40°C to 85°C.

FIFOs Memory Feature Summary

• Dual independent FIFOs with 64-word depth per channel
• Asynchronous or coincident free-running read and write clocks
• Input-ready flags synchronized to write clocks
• Output-ready flags synchronized to read clocks

FIFOs Memory Applications

• Serial-data buffering applications
• Elastic stores for T2 telecommunication rates
• Time-division multiplexing systems

FIFOs Memory Procurement Notes

Verify the specific package variant against the datasheet, as the DW suffix indicates a tube-packaged SOIC. Confirm that the design accommodates the required reset sequence involving four transitions of both read and write clocks. Ensure the operating environment remains within the specified temperature limits for reliable flag synchronization.

FIFOs Memory Selection Notes

Select this component when designing serial data buffers requiring independent asynchronous clock domains for read and write operations. The SN74ACT2226DW provides status flags for flow control, making it suitable for managing data rate mismatches. Verify that the system timing requirements align with the specified setup and hold times for reliable data transfer.

FIFOs Memory Part Context

This part belongs to the SN74ACT2226/2228 family of dual clocked first-in, first-out memories. While the SN74ACT2228 offers a larger 256-word depth, the SN74ACT2226 provides a 64-word configuration. Both share identical pinouts and operational characteristics within the same 24-pin SOIC package.

FIFOs Memory Replacement Considerations

SN74ACT2228DW serves as a functional substitute offering increased storage capacity while maintaining identical pin configurations and electrical specifications.