EESchema Schematic File Version 4 EELAYER 30 0 EELAYER END $Descr A4 11693 8268 encoding utf-8 Sheet 4 5 Title "" Date "" Rev "" Comp "" Comment1 "" Comment2 "" Comment3 "" Comment4 "" $EndDescr $Comp L 74xx:74LS390 U? U 1 1 5E2FC3AF P 3850 2650 F 0 "U?" H 3850 3017 50 0000 C CNN F 1 "74HC390" H 3850 2926 50 0000 C CNN F 2 "" H 3850 2650 50 0001 C CNN F 3 "http://www.ti.com/lit/gpn/sn74LS390" H 3850 2650 50 0001 C CNN 1 3850 2650 1 0 0 -1 $EndComp $Comp L 4xxx:4046 U? U 1 1 5E2FC7E9 P 3850 5550 F 0 "U?" H 3850 6431 50 0000 C CNN F 1 "74HC4046" H 3850 6340 50 0000 C CNN F 2 "" H 3850 5550 50 0001 C CNN F 3 "https://assets.nexperia.com/documents/data-sheet/HEF4046B.pdf" H 3850 5550 50 0001 C CNN 1 3850 5550 1 0 0 -1 $EndComp $Comp L 74xx:74LS390 U? U 2 1 5E2FD81E P 3850 3400 F 0 "U?" H 3850 3767 50 0000 C CNN F 1 "74HC390" H 3850 3676 50 0000 C CNN F 2 "" H 3850 3400 50 0001 C CNN F 3 "http://www.ti.com/lit/gpn/sn74LS390" H 3850 3400 50 0001 C CNN 2 3850 3400 1 0 0 -1 $EndComp $Comp L 74xx:74LS390 U? U 3 1 5E2FE851 P 4700 1150 F 0 "U?" H 4930 1196 50 0000 L CNN F 1 "74HC390" H 4930 1105 50 0000 L CNN F 2 "" H 4700 1150 50 0001 C CNN F 3 "http://www.ti.com/lit/gpn/sn74LS390" H 4700 1150 50 0001 C CNN 3 4700 1150 1 0 0 -1 $EndComp Text HLabel 9450 2650 2 50 Input ~ 0 10MHz Text HLabel 9450 2550 2 50 Input ~ 0 1PPS $EndSCHEMATC