CD40105BEX

Overview

The CD40105BEX is an asynchronous FIFO buffer register manufactured by Harris Corporation. It features a memory size of 16 x 4 bits and supports uni-directional data transfer. The device operates at a maximum data rate of 4MHz with a supply voltage range of 3V to 18V. It is housed in a 16-pin DIP package and functions within an operating temperature range of -55°C to 125°C.

Feature Summary

• Asynchronous first-in, first-out buffering for data flow control
• Uni-directional data transfer capability
• Wide supply voltage operation range
• Extended industrial temperature rating

Applications

• Data buffering between asynchronous clock domains
• Interface bridging in digital communication systems
• Temporary storage in microprocessor-based systems

Procurement Notes

Verify the manufacturer origin as Harris Corporation or its successors, noting that original Harris logic products may be obsolete or produced under license. Confirm the package type is 16-DIP and the function is asynchronous FIFO. Check for RoHS compliance status, as original specifications indicate non-compliance. Ensure the part number suffix 'BEX' matches the required variant for bulk packaging and specific electrical characteristics.

Selection Notes

Select this component when asynchronous FIFO functionality is required for 4-bit wide data paths with a depth of 16 words. Consider the 4MHz speed limit and 3V-18V supply range compatibility with the target system. Evaluate the through-hole DIP package suitability against PCB layout constraints and thermal requirements within the -55°C to 125°C range.

Part Context

This component belongs to the CMOS logic family, specifically designed for memory and buffering applications. It serves as a specialized interface solution for managing data rates between different parts of a digital circuit. The device provides a reliable method for handling data bursts without requiring synchronized clocks between input and output stages.