Fairchild Semiconductor 74ACT399SJ_Q Logic Family: 74ACT Maximum Operating Temperature: + 85 C Minimum Operating Temperature: - 40 C Mounting Style: SMD/SMT Number Of Input Lines: 8 Number Of Lines (input / Output): 8 / 4 Number Of Output Lines: 4 Package / Case: SOP-20 Product: Multiplexers Propagation Delay Time: 9 ns at 5 V Supply Voltage - Max: 5.5 V Supply Voltage - Min: 4.5 V Number of Lines (Input / Output): 8 / 4 Number of Input Lines: 8 Number of Output Lines: 4