SN74V3650-15PEU

Overview

The SN74V3650-15PEU is a 3.3-V CMOS first-in, first-out (FIFO) memory with a 2048 × 36 bit organization and 73.7 Mbit capacity. It operates at frequencies up to 166 MHz with a 6-ns read/write cycle time. The device features user-selectable bus sizing for input and output ports in widths of 36, 18, or 9 bits. It supports independent read and write clocks, big-endian/little-endian byte representation, and programmable almost-empty/full flags. The component is housed in a 128-pin Thin Quad Flat Pack (TQFP).

Feature Summary

• Supports flexible bus matching with selectable input and output port widths of 36, 18, or 9 bits.
• Provides zero-latency retransmit capability and fixed low first-word latency.
• Features programmable almost-empty and almost-full flags with selectable synchronous or asynchronous timing modes.
• Includes master reset and partial reset functions to manage FIFO pointers and retain configuration settings.

Applications

• Network buffering and data communications systems
• Video signal processing applications
• Telecommunications equipment requiring bus size matching
• Data storage interfaces needing large data buffering

Procurement Notes

Verify the specific ordering suffix matches the required package type and temperature range. Confirm that the voltage level requirements align with the 3.3-V CMOS specifications. Ensure compatibility with the intended clock frequencies and bus configurations before finalizing procurement orders.

Selection Notes

Select this component when deep memory depth combined with high-speed operation is required. Consider the SN74V3650 specifically for its 2048-word depth. Evaluate the need for variable bus widths to match system interfaces. Verify that the 128-pin TQFP package fits the available board space constraints.

Part Context

This part belongs to the SN74V36xx series of high-performance submicron CMOS FIFO memories. The series includes variants with different memory depths ranging from 1024 to 32768 words. All members share common functional characteristics such as 5-V tolerant inputs and flexible bus-matching capabilities.

Replacement Considerations

Compatible substitutes within the same family include SN74V3640, SN74V3660, SN74V3670, SN74V3680, and SN74V3690. These parts offer identical functionality but differ in memory depth. Ensure the selected replacement provides sufficient storage capacity for the application requirements.