74LVC109

NOTES:
1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

The 74LVC109 is a low-voltage Si-gate CMOS device that is pin and function compatible with 74HC/HCT109.

The 74LVC109 is a dual positive-edge triggered JK-type flip-flop featuring individual J, K inputs, clock (CP) inputs, set (S_D) and reset (R_D) inputs; also complementary Q and Q outputs.

The set and reset of the 74LVC109 are asynchronous active LOW inputs and operate independently of the clock input.

The J and K inputs of the 74LVC109 control the state changes of the flip-flops as described in the mode select function table. The J and K inputs must be stable one set-up time prior to the LOW-to-HIGH clock transition for predictable operation. The JK design allows operation as a D-type flip-flop by tying the J andK inputs together.

Schmitt-trigger action of the 74LVC109 in the clock input makes the circuit highly tolerant to slower clock rise and fall times.