This series is the Soviet and post-Soviet equivalent of the Western families. It is designed to balance speed and efficiency, offering a significant reduction in power consumption compared to standard TTL families while maintaining high performance.
For detailed pinouts and electrical characteristics, technical specialists often refer to the comprehensive two-part manual: spravochnik mikroshem 1533 serii
: Typically operates with a logic "1" (HIGH) above 2.0V and a logic "0" (LOW) below 0.8V . Supply Voltage ( VCCcap V sub cap C cap C end-sub ) : Standard operating voltage is 5V ±plus or minus This series is the Soviet and post-Soviet equivalent
Справочник. Логические ИС. КР1533 КР1554. В двух частях - Elec.ru spravochnik mikroshem 1533 serii