SN74ACT7813-40DL

FIFOs Memory Overview

The SN74ACT7813-40DL is a synchronous FIFO memory device featuring a 64-word by 18-bit data organization. It operates within a supply voltage range of 4.5 V to 5.5 V and supports clock frequencies up to 25 MHz. The component provides an access time of 20 ns with a 50-pF load, utilizing Low-Power Advanced CMOS technology. It is housed in a 56-pin SSOP package and functions reliably across an operating temperature range of 0°C to 70°C.

FIFOs Memory Feature Summary

• Supports asynchronous or coincident free-running read and write clocks for flexible system integration
• Enables bidirectional configuration and width expansion without requiring additional logic components
• Features programmable almost-full/almost-empty flags synchronized to independent system clocks

FIFOs Memory Applications

• Buffering asynchronous datapaths in high-speed digital systems
• Bidirectional data buffering between different clock domains
• Word-width expansion for wider data bus architectures

FIFOs Memory Procurement Notes

Verify the specific speed grade suffix matches the required clock frequency for your application. Confirm that the SSOP-56 package dimensions align with your PCB footprint requirements. Ensure the operating temperature range meets your environmental specifications. Check current production status as older variants may be discontinued.

FIFOs Memory Selection Notes

Select this component when a 64x18 word depth is required for synchronous data buffering. The -40 suffix indicates a maximum clock frequency of 25 MHz, suitable for moderate-speed applications. Consider the -15 or -20 variants if faster clock rates are necessary. Verify compatibility with existing 5V logic levels and ensure adequate power supply decoupling for simultaneous switching noise reduction.

FIFOs Memory Part Context

This part belongs to the Texas Instruments Widebus family of advanced CMOS logic devices. It is pin-to-pin compatible with other members like the SN74ACT7803 and SN74ACT7805, facilitating design reuse. The device utilizes patented output edge control circuitry to dampen noise during simultaneous switching operations.

FIFOs Memory Replacement Considerations

SN74ACT7813-15DL offers faster performance at 67 MHz. SN74ACT7813-25DL provides intermediate speed at 40 MHz. SN74ACT7803 and SN74ACT7805 are pin-compatible alternatives within the same family.