SN74ACT7882-15FN

FIFOs Memory Overview

The SN74ACT7882-15FN is a 2048 x 18 synchronous FIFO memory device from the Texas Instruments Widebus family. It supports data rates up to 67 MHz with an access time of 12 ns maximum. The component operates on a 4.5 V to 5.5 V supply and features independent asynchronous inputs and outputs. It includes programmable almost-full/almost-empty flags, half-full flag, input-ready, and output-ready indicators. The device is housed in a 68-pin plastic leaded chip carrier (FN) package.

FIFOs Memory Feature Summary

• Supports read and write operations synchronized to independent system clocks
• Features programmable almost-full/almost-empty flag boundaries
• Provides direct bus interface capability through high output drive
• Allows cascading expansion in both word width and word depth

FIFOs Memory Applications

• Buffering data between asynchronous clock domains
• Data storage for high-speed serial-to-parallel conversion
• Interface bridging between different speed logic subsystems

FIFOs Memory Procurement Notes

Verify the specific -15 speed grade suffix matches the required 67 MHz operational frequency. Confirm the FN package designation corresponds to the 68-pin PLCC form factor. Ensure the design accommodates the specified 4.5 V to 5.5 V supply voltage range and 0°C to 70°C operating temperature limits.

FIFOs Memory Selection Notes

Select this component when a wide 18-bit data path is required alongside deep 2048-word storage capacity. The ACT series offers CMOS compatibility with TTL input levels. Consider the -15 variant specifically for applications demanding the highest available clock frequency within the 74ACT7882 product line.

FIFOs Memory Part Context

This part belongs to the SN74ACT7882 family of clocked first-in, first-out memories. It is pin-to-pin compatible with the SN74ACT7881 and SN74ACT7811 variants, facilitating design upgrades or replacements within existing architectures that utilize the Widebus family architecture.

FIFOs Memory Replacement Considerations

The SN74ACT7882-20FN and SN74ACT7882-30FN are confirmed substitutes offering slower clock speeds but maintaining identical pinouts and functionality.