Conditioning: plastic tube. Conditioning unit: 38. Function: Octal D-Type Flip-Flop, TTl enabled. Production date: 201444. Equivalents: 74HCT574D,653, CD74HCT574dW, MC74HCT574ADWG, MM74HCT574WM, M74HCT574RM13TR. Number of terminals: 20. RoHS: yes. Assembly/installation: surface-mounted component (SMD). Series: TTL-HCT. Housing: SO. Housing (according to data sheet): SO-20