If you have a legacy board that uses this 16-PDIP D-type flip-flop, verify date-code authenticity and plan a lifetime buy or a pin-compatible substitution before the remaining stock dries up.
16 MHz clock, 100 ns propagation delay — timing fit
The CD40174BE clocks at 16 MHz with a 100 ns propagation delay measured at 15 V supply and 50 pF load.
6-bit D-type with master reset — one element, six flip-flops
A single package contains six D-type flip-flops sharing a common clock and master reset. Outputs are non-inverted, triggered on the positive clock edge. Quiescent current is 4 µA typical, output drive is 6.8 mA sink and source. Input capacitance is 5 pF. The 16-pin PDIP (0.300" body) is a through-hole footprint that mates with standard DIP sockets or wave-solder boards.