FSDL321. Assembly/installation: PCB through-hole mounting. Housing (according to data sheet): DIP-8. Housing: DIP. Marking on the case: DL321. Note: oscillator frequency 45kHz...55kHz. Number of terminals: 8. RoHS: yes. Original product from manufacturer: Fairchild. Quantity in stock updated on 13/11/2025, 12:23