SN74ACT7805-20DL

FIFOs Memory Overview

The SN74ACT7805-20DL is a clocked first-in, first-out memory device featuring a 256-word by 18-bit organization. It operates within a supply voltage range of 4.5 V to 5.5 V and supports data rates up to 50 MHz with a maximum access time of 12 ns under a 50-pF load. The component utilizes low-power advanced CMOS technology and includes asynchronous reset functionality. It is packaged in a shrink small-outline SSOP-56 format and is characterized for operation across an ambient temperature range of 0°C to +70°C.

FIFOs Memory Feature Summary

• Supports free-running read and write clocks that can operate asynchronously or coincidently
• Features programmable almost-full/almost-empty flags alongside half-full and input/output-ready indicators
• Enables bidirectional configuration and word-width expansion without requiring additional logic gates
• Incorporates patented output edge control circuitry to dampen simultaneous switching noise

FIFOs Memory Applications

• Buffering asynchronous data paths operating at high clock rates
• Synchronizing independent system clocks for read and write operations
• Bidirectional data buffering configurations using dual devices
• Expanding data bus width through parallel device connection

FIFOs Memory Procurement Notes

Verify the specific speed grade suffix corresponds to the required 50 MHz performance specification. Confirm the package type matches the SSOP-56 form factor. Ensure the operating temperature range aligns with the commercial 0°C to +70°C rating. Check RoHS compliance status against current manufacturing standards. Validate pin compatibility if replacing older variants in existing designs.

FIFOs Memory Selection Notes

Select this component when designing systems requiring 18-bit wide data buffers with synchronous clocking capabilities. Consider the SN74ACT7805 for applications needing flexible flag programming and bidirectional flow control. Evaluate the 12 ns access time against system timing constraints. Compare against asynchronous FIFO alternatives if clock domain crossing is not required. Assess power consumption requirements relative to the low-power CMOS technology used.

FIFOs Memory Part Context

This device belongs to the Widebus family of Texas Instruments logic products. It shares pin compatibility with the SN74ACT7803 and SN74ACT7813 models. The part number indicates a specific speed grade variant within the broader SN74ACT78xx series. It represents a specialized memory solution distinct from standard logic gates or flip-flops.

FIFOs Memory Replacement Considerations

The SN74ACT7803 and SN74ACT7813 are confirmed pin-compatible substitutes. Verify functional differences regarding synchronization modes before substitution. Ensure electrical characteristics match the original design requirements.