SN74ALVC7803-20DLR

Overview

The SN74ALVC7803-20DLR is a 512 × 18 clocked first-in, first-out memory device designed for 3-V to 3.6-V VCC operation. It features low-power advanced CMOS technology and supports data rates up to 50 MHz with fast access times of 13 ns under a 50-pF load. The component utilizes independent write and read clocks that can be asynchronous or coincident. It includes programmable almost-full/almost-empty flags, half-full flag, input-ready, and output-ready status indicators. The device is housed in a 56-pin shrink small-outline package.

Feature Summary

• Supports bidirectional configuration and width expansion without additional logic
• Features programmable almost-full/almost-empty depth offset values
• Provides synchronized input-ready and output-ready status flags

Applications

• Buffering asynchronous data paths at high clock rates
• Bidirectional data buffering configurations
• Word-width expansion applications

Procurement Notes

Verify the specific ordering suffix 'DLR' corresponds to the tape-and-reel packaging variant when sourcing components. Confirm that the voltage supply range strictly adheres to the 3-V to 3.6-V specification during integration. Ensure the design accounts for the 56-pin shrink small-outline physical dimensions to maintain proper board layout compatibility.

Selection Notes

Select this component for designs requiring 18-bit wide data buffers operating within the 3-V to 3.6-V power domain. It is suitable for systems needing independent asynchronous or coincident clock domains for read and write operations. Consider its pin compatibility with the SN74ACT7803 if migrating from 5-V logic families while maintaining similar functional interfaces.

Part Context

This part belongs to the Texas Instruments ALVC series of logic integrated circuits. It functions as a synchronous FIFO memory block within the broader family of high-speed digital storage components. The device is engineered to interface directly with standard logic levels while providing robust data buffering capabilities for complex digital signal processing architectures.

Replacement Considerations

The SN74ACT7803 is documented as pin-compatible with this device.