SN74V3690-6PEU

Overview

The SN74V3690-6PEU is a 3.3-V CMOS synchronous first-in, first-out (FIFO) memory with a 32768 × 36 bit organization and 1 Mbit capacity. It supports 166-MHz operation with a 6-ns read/write cycle time. The device features user-selectable bus sizing for input and output ports at 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 mode or first-word fall-through (FWFT) timing for data access control.
• Includes retransmit functionality allowing zero-latency or normal-latency rereading of stored data.

Applications

• Network buffering and packet processing
• Video signal processing systems
• Telecommunications data handling
• Data communications interface buffering

Procurement Notes

Verify the specific ordering suffix PEU corresponds to the 128-pin Thin Quad Flat Pack (TQFP) package configuration. Confirm that the device meets the required operating temperature range of 0°C to 70°C for your application environment. Ensure power supply voltage levels align with the specified 3.3-V CMOS requirements before integration.

Selection Notes

Select this component when deep memory depth of 32768 words is required alongside high-speed 166-MHz performance. Choose this part if independent read and write clock domains are necessary for asynchronous data transfer between different system buses. Consider this device for applications requiring precise flow control through programmable flag thresholds.

Part Context

This component belongs to the SN74V36x0 family of high-performance submicron CMOS FIFO memories. The family offers varying memory depths from 1024 to 32768 words, all maintaining a consistent 36-bit data width architecture. These devices are designed for high-density storage and bus-matching applications in digital signal processing environments.

Replacement Considerations

SN74V3680-6PEU: Offers identical electrical characteristics but with reduced memory depth of 16384 x 36 bits. Verify that the smaller storage capacity meets your system's buffering requirements before substituting.