The SL74HC109 is identical in pinout to the LS/ALS109. The device inputs are compatible with standard CMOS outputs, with pullup resistors, they are compatible with LS/ALSTTL outputs.

This device consists of two J-K flip-flops with individual set, reset, and clock inputs. Changes at the inputs are reflected at the outputs with the next low-to-high transition of the clock. Both Q to Q outputs are available from each flip-flop.

? Outputs Directly Interface to CMOS, NMOS, and TTL

? Operating Voltage Range: 2.0 to 6.0 V

? Low Input Current: 1.0 μA

? High Noise Immunity Characteristic of CMOS Devices