# 158 series integrated circuits

> series of Soviet TTL logic circuits

**Wikidata**: [Q115861507](https://www.wikidata.org/wiki/Q115861507)  
**Source**: https://4ort.xyz/entity/158-series-integrated-circuits

## Summary
The 158 series is a family of Soviet transistor–transistor logic (TTL) integrated circuits based on the American 7400 series. This series of electronic circuits was developed in the Soviet Union and follows the country's integrated circuit designation standards.

## Key Facts
- The 158 series is based on the 7400 series of transistor–transistor logic integrated circuits
- It is a series of Soviet TTL logic circuits developed in the Soviet Union
- It complies with Soviet integrated circuit designation standards
- It is classified as an integrated circuit series and an instance of transistor–transistor logic
- It has 1 sitelink on Wikipedia
- It has a commons category on Wikimedia Commons
- An image of a К158ТВ1 transistor implementation is available on Wikimedia Commons
- It represents Soviet electronic manufacturing capabilities during the Cold War era

## FAQs
### Q: What is the 158 series of integrated circuits?
A: The 158 series is a family of Soviet transistor–transistor logic (TTL) integrated circuits based on the American 7400 series. These circuits were developed domestically in the Soviet Union to serve as alternatives to Western electronic components.

### Q: How does the 158 series relate to the 7400 series?
A: The 158 series is based on the 7400 series, which is a series of transistor–transistor logic integrated circuits that originated in the United States. The Soviet version adapts this technology to fit Soviet manufacturing capabilities and designation standards.

### Q: What country developed the 158 series?
A: The 158 series was developed in the Soviet Union, representing the country's efforts to produce domestic alternatives to Western electronic components during the Cold War era.

### Q: What type of logic does the 158 series use?
A: The 158 series uses transistor–transistor logic (TTL), a type of digital circuit design that became widely adopted for its reliability and performance characteristics.

### Q: How is the 158 series identified in the Soviet designation system?
A: The 158 series uses the "158" prefix as part of the Soviet integrated circuit designation system, distinguishing it from other Soviet electronic component series.

## Why It Matters
The 158 series represents the Soviet Union's adaptation of Western integrated circuit technology during the Cold War era. By developing TTL circuits based on the American 7400 series, Soviet engineers could create compatible electronic components for military, industrial, and consumer applications. This series helped maintain technological parity in certain sectors despite export restrictions and sanctions. The adherence to Soviet designation standards (starting with 158) indicates a domestic production ecosystem independent of Western norms. These integrated circuits would have been crucial for various Soviet-era electronics, including computing systems, telecommunications equipment, and control systems. The series exemplifies technological transfer and adaptation during a period of geopolitical competition, showing how standardized logic families could be implemented across different industrial and political systems.

## Notable For
- Based on the American 7400 series, demonstrating technological adaptation during the Cold War
- Uses Soviet integrated circuit designation system (prefix "158")
- Developed independently by Soviet engineers while maintaining compatibility with Western TTL standards
- Represents Soviet electronic manufacturing capabilities during the Cold War era
- Part of the Soviet industrial effort to produce domestic alternatives to Western electronic components

## Body
### Technical Specifications
- Based on transistor–transistor logic (TTL) technology
- Complies with Soviet integrated circuit designation standards
- Part of the broader Soviet integrated circuit ecosystem
- Designed as TTL logic circuits for digital applications

### Historical Context
- Developed in the Soviet Union during the Cold War era
- Created as part of Soviet efforts to produce domestic alternatives to Western electronic components
- Represents adaptation of American 7400 series technology to Soviet manufacturing capabilities
- Emerged from the need for domestically produced electronic components

### Production and Designation
- Uses the "158" prefix as part of Soviet integrated circuit designation system
- One of several Soviet series of TTL integrated circuits
- Domestic production independent of Western manufacturing processes
- Manufactured to meet Soviet technical standards and requirements

### Relation to Other Series
- Based on the American 7400 series of integrated circuits
- Part of the integrated circuit series class of electronic components
- Related to transistor–transistor logic family of circuits
- Complements other Soviet integrated circuit series

### Documentation
- Has 1 sitelink on Wikipedia
- Has a commons category on Wikimedia Commons
- An image is available on Wikimedia Commons showing К158ТВ1 transistor implementation
- Documented as a series of Soviet TTL logic circuits in Wikidata