SN74V3650-7PEU

Overview

The SN74V3650-7PEU is a 2048 × 36 bit, 3.3-V CMOS first-in, first-out (FIFO) memory fabricated using high-performance submicron technology. It supports 166-MHz operation with a 6-ns read/write cycle time and operates within a temperature range of 0°C to 70°C. The device features user-selectable input and output bus sizing configurations of ×36, ×18, or ×9 bits. It includes 5-V tolerant inputs, big-endian/little-endian selectable byte representation, and independent read and write clocks for simultaneous data handling.

Feature Summary

• Supports flexible bus matching on both read and write ports with selectable widths of ×36, ×18, or ×9 bits.
• Provides user-selectable big-endian or little-endian byte representation for data word formatting.
• Features programmable almost-empty and almost-full flags with selectable synchronous or asynchronous timing modes.
• Includes retransmit functionality allowing zero-latency or normal-latency rereading of FIFO data.

Applications

• Network buffering applications requiring large data storage capacity.
• Video signal processing systems needing bus size matching.
• Telecommunications equipment utilizing high-speed data transfer.
• Data communications interfaces managing unequal bus sizes.

Procurement Notes

Verify the specific ordering suffix '-7PEU' against the manufacturer's current production data sheet to confirm package type and availability status. Ensure that the required operating temperature range of 0°C to 70°C aligns with your system specifications. Confirm that the 3.3-V supply voltage and 5-V tolerant input requirements are compatible with your design constraints before procurement.

Selection Notes

Select this component when a deep memory depth of 2048 words is required alongside high-speed 166-MHz operation. Choose this part if your application demands independent read and write clock domains to handle simultaneous data flows. Consider this device if you need configurable bus widths to match varying interface standards without external logic. Verify that the 128-pin TQFP package fits your board layout constraints.

Part Context

This component belongs to the SN74V36xx series of 3.3-V CMOS FIFO memories from Texas Instruments. The series offers scalable memory depths ranging from 1024 to 32768 words, all maintaining a consistent 36-bit internal architecture. These devices share common control logic and flag mechanisms, differing primarily in storage capacity and specific pinout variations for larger packages.

Replacement Considerations

The SN74V3640 serves as a shallower alternative with 1024 × 36 bit capacity. For deeper storage needs, the SN74V3660 provides 4096 × 36 bit organization. All members of the SN74V36xx family share identical control logic and functional characteristics, allowing for potential substitution based solely on required memory depth.