SN74ACT7801-18FNR

FIFOs Memory Overview

The SN74ACT7801-18FNR is a synchronous first-in, first-out (FIFO) memory device manufactured by Texas Instruments. It features an organization of 1024 words by 18 bits, providing a total storage capacity of 18 kbits. The component operates with a maximum clock frequency of 40 MHz and has a typical access time of 18 ns. It functions within a supply voltage range of 4.5 V to 5.5 V and supports data bus widths of 18 bits. The device is housed in a 68-pin FineLine package and is designed for commercial temperature applications ranging from 0°C to +70°C.

FIFOs Memory Feature Summary

• Synchronous FIFO architecture with 1024 x 18 bit organization
• High-speed operation supporting up to 40 MHz clock frequencies
• Compatible with standard 5V logic systems via ACT series specifications

FIFOs Memory Applications

• Data buffering between asynchronous system domains
• Level shifting in high-speed digital interfaces
• Temporary storage in communication protocol bridges

FIFOs Memory Procurement Notes

Verify the specific suffix '18FNR' against the manufacturer's current datasheet to confirm pinout compatibility and package type. Ensure that the required operating temperature range aligns with commercial grade specifications. Cross-reference the access time and clock speed requirements with your system design constraints before finalizing procurement decisions.

FIFOs Memory Selection Notes

Select this component when a synchronous FIFO interface is required for 18-bit wide data paths. Consider the 68-pin package size relative to available board space. Evaluate the 40 MHz performance limit against your system's clock domain requirements to ensure adequate timing margins are maintained during data transfer operations.

FIFOs Memory Part Context

This part belongs to the SN74ACT7801 series of synchronous FIFO memories. It is distinct from asynchronous variants like the SN74ACT7803 or different organization sizes such as 512x18 or 256x18 configurations found in related product lines. The ACT series designation indicates advanced CMOS technology optimized for low power consumption and high-speed performance in 5V applications.

FIFOs Memory Replacement Considerations

Direct substitutes include other SN74ACT7801 variants with compatible pinouts and electrical characteristics. Verify that any replacement maintains the 1024x18 organization and synchronous control signals. Check for equivalent package dimensions if physical footprint constraints exist.