Marking on the case: 74HC595D. Equivalents: CD74HC595M96, SN74HC595D, SN74HC595DE4, SN74HC595DG4, SN74HC595DRG3. Number of terminals: 16. RoHS: yes. Assembly/installation: surface-mounted component (SMD). Series: TTL-HC. Housing: SO. Housing (according to data sheet): SO-16