74HC04D (Hex Inverter) (NOT Gate) DS3231 High Precision The up/down (U/D) input signal

The up/down (U/D) input signal determines thedirection of counting as indicated in the function table

Max Switching voltage: 100V DC

2 mA at  6 V

Infrared communication

Unlike the lateral movement calculations these are not dependent upon the distance of the visible objects

74HC04D (Hex Inverter) (NOT Gate) DS3231 High Precision The up/down (U/D) input signalIntroduction : 74HC04 Hex Inverter IC.(NOT Gate). Features : Logic Type: NOT. Propagation Delay Time: 85 ns, 17 ns, 14 ns. No. of Gates: 6 . Output Current: 5. 2mA. No. of Inputs: 1 X 6. No. of Pins: 14. Operating Temperature Range: 40C to +125C. Supply Voltage Range: 2V to 6V. Package: DIP 14 .