SN74ALVC7803-25DL

Overview

The SN74ALVC7803 is a 512 × 18 clocked first-in, first-out memory device designed for 3-V to 3.6-V VCC operation. It supports data rates from 0 to 50 MHz with fast access times of 13 ns under a 50-pF load and simultaneous switching conditions. The component features independent read and write 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 (DL) package.

Feature Summary

• Supports bidirectional configuration and width expansion without additional logic
• Features programmable almost-full/almost-empty offset values via program enable pin
• Provides synchronized input-ready and output-ready status flags
• Operates with free-running read and write clocks that may be asynchronous

Applications

• Buffering asynchronous data paths at high clock rates
• Bidirectional data buffering configurations
• Word-width expansion applications requiring 36-bit data handling

Procurement Notes

Verify the specific suffix DL indicates the 56-pin shrink small-outline package with 25-mil lead spacing. Confirm the operating temperature range matches the application requirements, as standard versions typically cover 0°C to 70°C. Ensure supply voltage constraints between 3 V and 3.6 V are strictly maintained during system design and validation.

Selection Notes

Select this component when a 512-word by 18-bit depth is required for synchronous data buffering. It is suitable for systems needing independent read and write clock domains. Consider its pin compatibility with SN74ACT7803 if migrating from older ACT logic families. Evaluate power dissipation calculations based on clock frequency and load capacitance for thermal management.

Part Context

This device belongs to the SN74ALVC78xx series of advanced low-voltage CMOS FIFO memories. It utilizes Texas Instruments' low-power advanced CMOS technology. The part is functionally compatible with previous generation ACT logic but operates at lower voltages. It serves as a specialized memory buffer for high-speed digital signal processing and communication interfaces.

Replacement Considerations

SN74ACT7803 is documented as pin-compatible.