SN74V293-15GGM

FIFOs Memory Overview

The SN74V293-15GGM is a high-speed, deep CMOS first-in, first-out (FIFO) memory with a capacity of 65536 × 18 bits. It operates at frequencies up to 166 MHz with a 6 ns read/write cycle time. The device supports user-selectable input and output bus widths of either 9 or 18 bits, allowing flexible data flow matching. It features independent read and write clocks, big-endian/little-endian byte representation options, and 5-V tolerant inputs. The component includes programmable almost-empty and almost-full flags, selectable timing modes, and retransmit capabilities.

FIFOs Memory Feature Summary

• Supports user-selectable input and output port bus sizing for flexible data flow matching between unequal buses.
• Features big-endian and little-endian user-selectable byte representation for varied data format requirements.
• Includes programmable almost-empty and almost-full flags that can be configured via serial or parallel methods.
• Provides independent read and write clock domains permitting simultaneous reading and writing operations.

FIFOs Memory Applications

• Network buffering applications requiring large data storage capacity
• Video processing systems needing high-speed data handling
• Telecommunications equipment utilizing FIFO memory interfaces
• Data communications systems matching buses of unequal sizes

FIFOs Memory Procurement Notes

Verify the specific suffix GGM corresponds to the 100-pin Ball Grid Array package configuration. Confirm the -15 speed grade matches the required operational frequency specifications for your design. Ensure compatibility with the 3.3-V supply voltage and check for any specific environmental or reliability certifications required by your application standards before finalizing procurement.

FIFOs Memory Selection Notes

Select this component when deep memory depth and high-speed operation are critical. Consider the SN74V293 family if you require 65536 × 18 bit capacity. Evaluate the need for independent clock domains and flexible bus width matching. Verify that the 100-pin BGA package fits your board layout constraints. Check if the 5-V tolerant inputs are necessary for interfacing with legacy logic levels.

FIFOs Memory Part Context

This part belongs to the SN74V263, SN74V273, SN74V283, and SN74V293 family of high-speed CMOS FIFO memories. These devices share common architectural features such as submicron CMOS technology and flexible bus-matching capabilities. The primary distinction among the family members is their memory depth, with the SN74V293 offering the largest capacity in this series.

FIFOs Memory Replacement Considerations

SN74V293PZA

FIFOs Memory FAQ

How does the First-Word Fall-Through mode affect data access?

In FWFT mode, the first word written to an empty FIFO is clocked directly to the data outputs after three RCLK transitions without requiring the Read Enable signal to be asserted.

What is the function of the Retransmit pin?

The Retransmit pin allows previously read data to be accessed again by resetting the read pointer to the first location of the memory array without disturbing the write pointer.