Binary counter in the ACT family
The Texas Instruments 54ACT161DM is a binary counter from the ACT series, a logic family that balances speed and drive capability for moderate-frequency counting and timing applications in control and interface circuits.
Supplied in Bulk packaging, the 54ACT161DM ships as loose devices rather than tape-and-reel — a detail that matters for hand-assembly, prototype runs, or low-volume production where pick-and-place setup cost doesn't justify reel feed. As a through-hole or DIP-package device (typical for the ACT series in this form factor), the 54ACT161DM fits standard prototype boards and legacy socket layouts without requiring a board spin from a surface-mount alternative.