SN74ACT7802-60FN

FIFOs Memory Overview

The SN74ACT7802-60FN is a 1024-word by 18-bit strobed first-in, first-out memory device manufactured using low-power advanced CMOS technology. It supports data rates up to 16.7 MHz with a maximum access time of 45 ns and a typical fall-through time of 21 ns. The component operates within a supply voltage range of 4.5 V to 5.5 V and features an operating temperature range from 0°C to 70°C. It utilizes a 68-pin FN package.

FIFOs Memory Feature Summary

• Provides programmable almost-full/almost-empty flags alongside standard empty, full, and half-full status indicators for precise buffer management.
• Features high-output drive capability suitable for direct bus interfacing with three-state outputs controlled by an output-enable input.
• Supports asynchronous or coincident load and unload clocks to facilitate independent data writing and reading at varying rates.

FIFOs Memory Applications

• High-speed data buffering between asynchronous clock domains
• Data rate matching in communication systems
• Word-width expansion through cascading capabilities

FIFOs Memory Procurement Notes

Verify the specific -60 speed grade suffix against the latest Texas Instruments datasheet SCAS187D to confirm the 16.7 MHz maximum frequency rating. Ensure the FN package designation matches the required 68-pin footprint for your PCB layout. Confirm RoHS compliance status as specified in the manufacturer's current documentation before finalizing procurement orders.

FIFOs Memory Selection Notes

Select this component when a 1024 x 18 bit FIFO depth is required with synchronous write/read control via separate clocks. The -60 variant is appropriate for applications requiring a maximum clock frequency of 16.7 MHz. Consider the widebus family compatibility if integrating with other Texas Instruments logic components that share similar interface characteristics.

FIFOs Memory Part Context

This device belongs to the Widebus family of Texas Instruments logic products, designed for high-density parallel data handling. It implements low-power advanced CMOS technology to reduce power consumption while maintaining fast switching speeds. The SN74ACT7802 serves as a specialized memory solution within the broader 74ACT logic series portfolio.

FIFOs Memory Replacement Considerations

The SN74ACT7802-25FN and SN74ACT7802-40FN are confirmed substitutes offering faster maximum clock frequencies of 40 MHz and 25 MHz respectively. Verify pinout compatibility and electrical specifications match your design requirements when substituting these variants.

FIFOs Memory FAQ

How is the almost-full/almost-empty flag offset value programmed?

The offset value can be user-defined by holding the DAF input low during a reset pulse to store binary data on inputs D0-D7, or set to the default value of 256 by holding DAF high during the reset cycle.

Can the SN74ACT7802 be cascaded to increase memory depth?

No, the SN74ACT7802 can only be cascaded in the word-width direction to expand data bus width, not in the word-depth direction to increase storage capacity.