Manufacturer: Fairchild Semiconductor  •  RoHS/pb-free: RoHS   Pb-free  •  Series: 74F  •  Logic Type: Binary Counter  •  Direction: Up, Down  •  Number of Elements: 1 - Single  •  Number of Bits per Element: 4  •  Timing: Synchronous  •  Count Rate: 100MHz  •  Trigger Type: Positive Edge  •  Voltage - Supply: 4.5 V ~ 5.5 V  •  Operating Temperature: 0°C ~ 70°C  •  Mounting Type: Through Hole  •  Package / Case: 16-DIP (300 mil)  •  Other PartNo: 74F191