4-digit VFD display Driver for displaying 24 hour alarm clock.Add the 32.768kHz crystal, a few capacitors, resistors and VFD and have nice clock!
Output voltage HIGH level    -27V
Output voltage LOW level    -1.3V
Current consumption            8mA
Leakage current on pins        3uA
Clock pulse width                   3us

KR145IK1911 for construction of multifunctional electronic clock with luminescent indicator. In particular, multi-bit luminescent indicators can be used with the VFD tubes IV-11, IVL2-7/5 etc.
The ENCORE of KR145IK1911 eats from tension source - 27V and allows to construct the hours-alarm clock-timer with a sound signal and a possibility of control of the actuation mechanism on two temporary points a day (for example inclusion and switching off of the household appliance in the set time).