What this 6-bit D-type register does on your board
The TI CD74AC174M is a single-element, 6-bit D-type flip-flop with master reset, clocked on the positive edge. It operates on a 1.5V to 5.5V supply rail. With a 95 MHz clock frequency and a 13.5 ns propagation delay at 5V into 50 pF, this part keeps up with a 74AC or 74ACT bus without creating setup-time headaches. The 24 mA symmetric output drive (both high and low) is enough to drive a short ribbon cable or a handful of downstream logic inputs without buffering. The operating temperature range is -55°C to 125°C — full military grade. That makes it a candidate for avionics, satellite payloads, downhole instrumentation, or outdoor telecom cabinets where the board sees thermal cycling well beyond commercial limits.
Package and footprint — 16-SOIC narrow body
The CD74AC174M comes in a 16-pin SOIC narrow body (3.90 mm width). That is the standard SOIC-16 footprint shared by thousands of logic parts.
Lifecycle and sourcing — active, no LTB clock
The CD74AC174M is listed as Active with ROHS3 compliance. No end-of-life notice, no last-time-buy window. That means you can qualify it into a new BOM without worrying about a forced redesign six months from now.