Inputs Are TTL-Voltage Compatible

Speed of Bipolar F, AS, and S, With

Significantly Reduced Power Consumption

Balanced Propagation Delays

±24-mA Output Drive Current

– Fanout to 15 F Devices

SCR-Latchup-Resistant CMOS Process and

Circuit Design

Exceeds 2-kV ESD Protection Per

MIL-STD-883, Method 3015

description/ordering information

The ’ACT109 devices contain two independent J-K positive-edge-triggered flip-flops. A low level at the preset

(PRE) or clear (CLR) inputs sets or resets the outputs, regardless of the levels of the other inputs. When PRE

and CLR are inactive (high), data at the J and K inputs meeting the setup-time requirements are transferred to

the outputs on the positive-going edge of the clock (CLK) 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

can be changed without affecting the levels at the outputs. These versatile flip-flops can perform as toggle

flip-flops by grounding K and tying J high. They also can perform as D-type flip-flops if J and K are tied together.