74F109 is a dual positive edge-triggered JK-type flip-flop produced by Philips. It has independent J, K, clock, set, and reset inputs. The device works in the temperature range of -40 ° C to +85 ° C, with a maximum clock frequency of 125MHz and a typical current of 12.3mA.
The Philips 74F109 is a dual positive edge-triggered JK-type flip-flop featuring individual J, K, clock, set, and reset inputs. It includes true and complementary outputs, where the Set (SD) and Reset (RD) inputs are asynchronous active low signals that operate independently of the clock.
The device is available in two temperature ranges: Commercial (0°C to +70 °C) and Industrial (-40°C to +85 °C). It comes in 16-pin plastic DIP and SO packages. The datasheet details electrical characteristics, timing parameters, logic functions, and absolute maximum ratings for operation.
| Supply Voltage (VCC) | 4.5 V to 5.5 V |
|---|---|
| Operating Temperature (Industrial) | -40°C to +85 °C |
| Total Supply Current (Typical) | 12.3 mA |
Yes, tying the J and K inputs together allows the device to operate as a D flip-flop.
Set (SD) and Reset (RD) are asynchronous active low inputs that operate independently of the clock.