Through-hole transceiver for harsh-environment bus buffering
The Texas Instruments CD74HCT243EE4 is a 4-bit non-inverting transceiver from the 74HCT series, housed in a 14-pin PDIP package for through-hole mounting. This part is designed for industrial control, military/aerospace, and other environments requiring wide temperature tolerance and reliable bus isolation.
For a design that needs a through-hole logic part with military temperature range, this is a stable, long-term sourcing choice. The 74HCT family is mature but still in broad production, so supply through independent distribution remains consistent.
Board-level fit: 14-DIP footprint and 5V supply rail
The 14-DIP (0.300", 7.62mm) package is a standard through-hole footprint — no surprises for rework or manual assembly. It mates to a 14-pin DIP socket or direct solder into plated through-holes. The 6mA output drive is modest — fine for driving a few CMOS inputs or a short backplane trace, but not for heavy capacitive loads or long cables. For higher fan-out, consider a bus transceiver with 24mA or 32mA drive.