SN74ALVC7803-40DL

Overview

The SN74ALVC7803-40DL is a synchronous first-in, first-out memory device featuring a 512 x 18 bit organization and an 18-bit data bus. It operates within a 3-V to 3.6-V supply voltage range and supports clock frequencies up to 50 MHz. The component provides fast access times of 13 ns with a 50-pF load and utilizes low-power advanced CMOS technology. It 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 flags for depth offset control
• Includes input-ready and output-ready flags synchronized to independent clocks

Applications

• Buffering asynchronous data paths at high clock rates
• Synchronous read and write operations using independent system clocks
• Bidirectional data buffering configurations

Procurement Notes

Verify the specific suffix 'DL' corresponds to the 56-pin shrink small-outline package with 25-mil lead spacing. Confirm that the operating temperature range aligns with commercial requirements of 0°C to 70°C. Ensure the supply voltage matches the specified 3-V to 3.6-V operational limits before integration.

Selection Notes

Select this component when a 512 x 18 word capacity is required for synchronous FIFO applications. It is suitable for designs needing pin compatibility with SN74ACT7803 while operating at lower voltages. Consider its 50-MHz maximum clock frequency and 13-ns access time for high-speed data buffering needs.

Part Context

This part belongs to the Texas Instruments SN74ALVC7803 series of clocked first-in, first-out memories. It is designed specifically for 3-V to 3.6-V VCC operation and offers reduced board space compared to conventional packages. The series supports free-running read and write clocks that can be asynchronous or coincident.

Replacement Considerations

The datasheet confirms pin compatibility with the SN74ACT7803.