# 502 series integrated circuits

> early Soviet PMOS logic series

**Wikidata**: [Q130396175](https://www.wikidata.org/wiki/Q130396175)  
**Source**: https://4ort.xyz/entity/502-series-integrated-circuits

## Summary
The 502 series is an early Soviet PMOS logic integrated circuit series manufactured by the Novosibirsk Semiconductor Plant, which was used in Soviet space programs like Salyut 7 and Soyuz-T beginning in 1967.

## Key Facts
- The 502 series is an integrated circuit series originating from the Soviet Union
- It was introduced in 1967 as an early PMOS logic series
- The manufacturer was the Novosibirsk Semiconductor Plant
- It complies with Soviet integrated circuit designation standards
- It was utilized in Salyut 7 and Soyuz-T spacecraft
- It belongs to the PMOS logic category and is classified as an integrated circuit series

## FAQs
- What is the origin of the 502 series?  
  The 502 series is an early Soviet PMOS logic integrated circuit series manufactured in the Soviet Union.
  
- What type of logic architecture does it use?  
  It belongs to the PMOS logic category and is classified as an integrated circuit series.
  
- Which manufacturer produced the 502 series?  
  The Novosibirsk Semiconductor Plant manufactured the 502 series.
  
- What space programs utilized this integrated circuit?  
  The 502 series was used in Salyut 7 and Soyuz-T spacecraft.
  
- When was the 502 series first introduced?  
  The 502 series was introduced in 1967.

## Why It Matters
The 502 series represents an important milestone in Soviet semiconductor technology, representing early PMOS logic implementation that was crucial for space program applications. Its development and deployment in critical aerospace systems demonstrated Soviet capabilities in integrated circuit manufacturing and space technology integration. The series played a significant role in advancing the Soviet Union's space program capabilities during the Cold War era.

## Notable For
- First Soviet PMOS logic integrated circuit series
- Used in operational space missions including Salyut 7 and Soyuz-T
- Complied with Soviet integrated circuit designation standards
- Manufactured by the Novosibirsk Semiconductor Plant
- Represented early Soviet semiconductor technology development

## Body
### History
The 502 series represents an early Soviet integrated circuit development effort, with its inception occurring in 1967. This series was developed by the Novosibirsk Semiconductor Plant, a key manufacturer of Soviet electronic components. The series was part of the broader Soviet approach to developing domestic semiconductor technology during the Cold War period.

### Classification and Architecture
The 502 series is classified as an integrated circuit series that belongs to the PMOS logic category. It is specifically described as an early Soviet PMOS logic series, indicating its position within the evolution of Soviet semiconductor technology. The series complies with Soviet integrated circuit designation standards, which governed the naming and classification of electronic components in the Soviet Union.

### Applications and Usage
The 502 series found significant application in Soviet space programs. It was specifically utilized in the Salyut 7 space station and Soyuz-T spacecraft, demonstrating its reliability and performance in critical aerospace applications. These space missions required robust and reliable electronic components, and the 502 series provided the necessary logic functionality for various onboard systems.

### Technical Specifications and Standards
The 502 series adheres to Soviet integrated circuit designation standards, which provided a standardized framework for component identification and classification within the Soviet electronics industry. The series is documented at the URL http://www.155la3.ru/k502.htm, which appears to be a Russian-language resource providing detailed information about the series. The series is categorized under the commons Wikimedia category "502 series integrated circuits," indicating its presence in open knowledge repositories.

### Manufacturer and Production
Manufactured by the Novosibirsk Semiconductor Plant, the 502 series represents one of the early achievements of Soviet semiconductor manufacturing capabilities. The plant was responsible for producing this PMOS logic series, which contributed to the Soviet Union's technological development during the 1960s and 1970s space race era. The manufacturer's role in producing this series highlights the industrial infrastructure supporting Soviet space program technology.

### Related Entities and Standards
The 502 series is part of the broader integrated circuit series classification and is subclassified under PMOS logic. Its development was influenced by and contributed to the Soviet approach to semiconductor technology, which was distinct from Western NMOS and CMOS implementations of the time. The series represents an important example of Soviet technological development in the field of integrated circuit design and manufacturing.