CD54AC109

CD54AC109, CD74AC109 DUAL J-K POSITIVE-EDGE-TRIGGERED FLIP-FLOPS WITH CLEAR AND PRESET SCHS326 – JANUARY 2003 D AC Types Feature 1.5-V to 5.5-V Operation and Balanced Noise Immunity at 30% of the Supply Voltage D Speed of Bipolar F, AS, and S, With Significantly Reduced Power Consumption D Balanced Propagation Delays D ±24-mA Output Drive Current – Fanout to 15 F Devices D SCR-Latchup-Resistant CMOS Process and Circuit Design D Exceeds 2-kV ESD Protection Per MIL-STD-883, Method 3015 CD54AC109 . . . F PACKAGE CD74AC109 . . . E OR M PACKAGE (TOP VIEW) 1CLR 1 1J 2 1K 3 1CLK 4 1PRE 5 1Q 6 1Q 7 GND 8 16 VCC 15 2CLR 14 2J 13 2K 12 2CLK 11 2PRE 10 2Q 9 2Q description/ordering information The ’AC109 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. ORDERING INF...