SN74V263-6PZA

Overview

The SN74V263-6PZA is a synchronous first-in, first-out (FIFO) memory device manufactured by Texas Instruments. It features a storage organization of 8192 x 18 or 16384 x 9 bits, providing a total capacity of 147.456 kbit. The component operates with a maximum clock frequency of 166 MHz and supports independent read and write clocks. It utilizes a 3.3-V CMOS supply voltage range of 3.15 V to 3.45 V. The device is housed in an 80-pin LQFP package.

Feature Summary

• Supports flexible bus matching with user-selectable input and output port widths of either 9-bit or 18-bit.
• Features programmable almost-empty and almost-full flags that can be configured via serial or parallel methods.
• Provides selectable big-endian or little-endian byte representation for data word formatting.
• Includes zero-latency retransmit capability allowing data rereading from the FIFO without disturbing the write pointer.

Applications

• Buffering large amounts of data in telecommunications systems
• Matching buses of unequal sizes in network applications
• Video processing systems requiring high-speed data buffering
• Data communications interfaces

Procurement Notes

Verify the specific ordering suffix '-6PZA' corresponds to the 80-pin LQFP package variant. Confirm the 'SN74V263' designation matches the required 8192 x 18 / 16384 x 9 memory depth, distinct from the SN74V273, SN74V283, or SN74V293 models. Ensure the component meets RoHS compliance requirements for your assembly process.

Selection Notes

Select this component when a deep, high-speed synchronous FIFO is required for 3.3-V logic systems. It is suitable for applications needing glueless interfacing with DSPs like the TMS320C6x series. Consider the SN74V273, SN74V283, or SN74V293 if larger memory depths are necessary, as they share similar functional characteristics but offer increased storage capacity.

Part Context

The SN74V263 belongs to the SN74V2xx family of high-speed CMOS FIFO memories from Texas Instruments. This family includes the SN74V263, SN74V273, SN74V283, and SN74V293, which differ primarily in memory depth. The SN74V263 specifically provides the smallest depth in this series, offering 8192 x 18 or 16384 x 9 organization, while maintaining the same 166-MHz performance and feature set as its deeper counterparts.

Replacement Considerations

The SN74V273-6PZA, SN74V283-6PZA, and SN74V293-6PZA are functionally compatible alternatives within the same family, differing only in memory depth. Verify that the application does not require the additional storage capacity provided by these variants before substituting.