74HC173D - Quad D-type flip-flop
74HC173D Features
* Complies with JEDEC standard no. 7A
* Input levels:
* For 74HC173: CMOS level
* For 74HCT173: TTL level
* Gated input enable for hold (do nothing) mode
* Gated output enable control mode
* Edge-triggered D-type register
* Asynchronous