Device identity and logic family
The SN74AS175N is a D-type flip-flop from the Texas Instruments AS (Advanced Schottky) TTL logic family, containing four independent flip-flops with a common clock and clear. Packaged in a 16-pin plastic DIP (PDIP) supplied in bulk tube, this through-hole footprint suits prototype builds, legacy board repairs, and low-volume production runs where surface-mount reflow is not available.
Note that this device is marked RoHS non-compliant (contains lead in the solder-dip termination finish), which is typical for legacy DIP TTL parts. Buyers with RoHS-exempt or non-RoHS BOM lines can proceed; for full RoHS compliance, a pin-compatible alternative in a different logic family would be needed.
Package and board-fit considerations
No adapter board is required for through-hole insertion into a standard 0.100-inch grid prototype board or PCB.