BUY SN74LS109AN https://www.utsource.net/itm/p/1706545.html
500mA, 5V,±2% Tolerance, Voltage Regulator, Ta = 0°C to +125°C; Package: DPAK 4 LEAD Single Gauge Surface Mount; No of Pins: 4; Container: Tape and Reel; Qty per Container: 2500
Description: Dual J-K Flip-Flop Features: - Inputs Include Clocks, Set, Reset, and Direct Clear - Outputs Source/Sink 24 mA - Fanout of 10 LSTTL Loads - Balanced Propagation Delay and Transition Times - Significantly Lower Power Consumption Than LSTTL Logic ICs - 100% Tested for Quiescent Current at 20V - Maximum Input Current of 1μA at 18V Over Full Package-Temperature Range; 100nA at 18V and 25°C Applications: - Frequency Division - Clock Generation - Pulse Generation - Shift Register Applications - Data Storage - Timing Applications (For reference only)