SN74V3660-7PEU

Overview

The SN74V3660-7PEU is a 3.3-V CMOS synchronous FIFO memory with a 4096 × 36 bit organization, providing 147,456 bits of storage capacity. It supports 166-MHz operation with a 6-ns read/write cycle time and features independent read and write clocks. The device allows user-selectable bus sizing for input and output ports (×36, ×18, or ×9) and offers big-endian/little-endian byte representation options.

Feature Summary

• Supports flexible bus matching with selectable input and output port widths of 36, 18, or 9 bits.
• Features zero-latency retransmit capability allowing data to be reread from the first memory location.
• Includes programmable almost-empty and almost-full flags with selectable asynchronous or synchronous timing modes.
• Operates in standard mode or first-word fall-through (FWFT) mode for variable data latency control.

Applications

• Network buffering applications requiring large data storage and bus size matching
• Video signal processing systems needing high-speed data flow management
• Telecommunications equipment utilizing asynchronous clock domain crossing
• Data communications interfaces requiring fixed low first-word latency

Procurement Notes

Verify the specific ordering suffix matches the required package type and temperature range. Confirm that the revision level aligns with current production data standards. Ensure compatibility with existing board layouts regarding the 128-pin TQFP footprint. Check for any specific supply chain restrictions or end-of-life notices associated with this component series.

Selection Notes

Select this component when a deep memory depth of 4096 words is required alongside high-speed 166-MHz performance. Choose this part if independent read and write clocks are necessary for asynchronous system designs. Consider this device for applications demanding configurable bus widths to match varying data path requirements without external logic.

Part Context

This component belongs to the SN74V36xx family of high-speed CMOS FIFO memories manufactured by Texas Instruments. The family includes variants with different memory depths ranging from 1024 to 32768 words, all sharing similar functional characteristics and pinouts for easy scalability within system designs.

Replacement Considerations

SN74V3650-7PEU: Offers smaller 2048 x 36 depth. SN74V3670-7PEU: Provides larger 8192 x 36 depth. SN74V3680-7PEU: Features 16384 x 36 depth. All share identical pinouts and functionality.