SN74V3680-7PEU

Overview

The SN74V3680-7PEU is a 3.3-V CMOS synchronous first-in, first-out (FIFO) memory featuring a 16384 × 36 bit organization and a 576-kbit capacity. It supports up to 166-MHz operation with a 6-ns read/write cycle time. The device offers user-selectable bus matching for input and output widths of 36, 18, or 9 bits. It includes programmable almost-empty and almost-full flags, selectable standard or first-word fall-through timing modes, and independent read and write clocks.

Feature Summary

• Supports flexible bus matching with configurable input and output port widths of 36, 18, or 9 bits.
• Features programmable almost-empty and almost-full flags with selectable asynchronous or synchronous timing modes.
• Provides selectable standard or first-word fall-through timing modes for data access control.
• Includes retransmit functionality allowing zero-latency or normal-latency rereading of stored data.

Applications

• Network buffering systems
• Video signal processing applications
• Telecommunications data communications
• Systems requiring buffer matching between buses of unequal sizes

Procurement Notes

Verify the specific ordering suffix PEU corresponds to the 128-pin Thin Quad Flat Pack (TQFP) package configuration. Confirm that the -7 speed grade meets the required 166-MHz operational frequency specifications for your design. Ensure compatibility with 3.3-V logic levels and check for any specific master reset pin state requirements during initial power-up sequences.

Selection Notes

Select this component when deep memory depth of 16384 words is required alongside high-speed 3.3-V CMOS performance. Consider the SN74V3680 if variable bus width conversion between 36, 18, and 9-bit interfaces is necessary. Evaluate the need for programmable flag offsets and independent clock domains before choosing over simpler FIFO architectures.

Part Context

This part belongs to the SN74V36xx series of high-speed submicron CMOS FIFO memories from Texas Instruments. The series spans various depths from 1024 to 32768 words, all maintaining a 36-bit base word width. The SN74V3680 specifically targets applications needing substantial buffering capacity within a compact 128-pin TQFP footprint.

Replacement Considerations

SN74V3680-7PEU