80 MHz hex D-type with master reset — 16-DIP through-hole
The Fairchild 74F174PC is a hex D-type flip-flop in a 16-pin DIP, built on the 74F bipolar logic family. Each of the six flip-flops shares a common clock (positive-edge triggered) and a common master-reset line that clears all outputs asynchronously. The non-inverted outputs swing rail-to-rail on a 4.5 V to 5.5 V supply. With an 80 MHz maximum clock frequency and 10 ns propagation delay into 50 pF, this part is sized for 5 V synchronous buses, state machines, and register files where speed matters more than the 74LS or 74HC alternatives. The 0°C to 70°C commercial temperature range fits indoor card cages, bench instruments, and telecom backplanes — not engine bays or unheated enclosures.
Through-hole 16-DIP — board layout and handling
The 16-DIP (0.300 inch row spacing, 7.62 mm) is a standard through-hole footprint. Mounting type is through hole only; no surface-mount variant exists in this series. The 45 mA quiescent current is typical for 74F logic — about double a 74LS part but well within the capacity of a 5 V linear regulator. Output drive is asymmetric: 1 mA source, 20 mA sink. That means the part can drive a standard TTL load but not a high-current LED or relay directly. The 16-PDIP supplier package code is the same physical body; no thermal pad or heatsink is needed at these power levels.