The SN74F112 contains two independent J-K negative-edge-triggered
flip-flops. A low level at the preset () or clear () inputs sets or resets the outputs
regardless of the levels of the other inputs. When and are inactive (high), data at the J
and K inputs meeting the setup time requirements is transferred to
the outputs on the negative-going edge of the clock pulse. Clock
triggering occurs at a voltage level and is not directly related to
the rise time of the clock pulse. Following the hold-time interval,
data at the J and K inputs may be changed without affecting the
levels at the outputs. The SN74F112 can perform as a toggle flip-flop
by tying J and K high.
The SN74F112 is characterized for operation from 0°C to
70°C.