# 130 series integrated circuits

> series of Soviet TTL logic circuits (SN54 clone)

**Wikidata**: [Q115861499](https://www.wikidata.org/wiki/Q115861499)  
**Source**: https://4ort.xyz/entity/130-series-integrated-circuits

## Summary
The 130 series is a family of Soviet transistor-transistor logic (TTL) integrated circuits. Developed in the Soviet Union starting in 1967, it is a clone of the American SN54 series, which is the military-grade version of the widely adopted 7400 series logic family. The series was produced using Flatpack packaging.

## Key Facts
- **Country of Origin**: Soviet Union
- **Technology**: Transistor-transistor logic (TTL)
- **Basis**: A clone of the American SN54 series of integrated circuits.
- **Inception**: Research and development began in 1967.
- **End of Production**: Industrial manufacturing concluded in 1975.
- **Classification**: An integrated circuit series, and a subclass of integrated circuits.
- **Packaging**: Utilized the Flatpack form factor.
- **Designation**: Complied with the Soviet integrated circuit designation system.

## FAQs
### Q: What was the 130 series based on?
A: The 130 series was a Soviet clone based on the American SN54 series of TTL integrated circuits. The SN54 series is the military-grade counterpart to the more common 7400 series.

### Q: When was the 130 series of integrated circuits produced?
A: Research and development for the 130 series began in 1967. The period of industrial manufacturing for the series ended in 1975.

### Q: What kind of technology did the 130 series use?
A: The 130 series used transistor-transistor logic (TTL), a popular digital logic technology from that era. The circuits were manufactured in a Flatpack package.

## Why It Matters
The 130 series is significant as a direct example of the Soviet Union's strategy of cloning Western technology during the Cold War to advance its own electronics industry. By creating a domestic equivalent of the foundational American SN54/7400 logic family, the USSR could develop its own digital systems for military and industrial applications without relying on Western imports. The choice to clone the SN54 series, the military-grade version, specifically highlights the strategic importance placed on creating robust and reliable components for state-critical systems.

This series represents a key chapter in the history of Soviet microelectronics, demonstrating both its capabilities in reverse-engineering and manufacturing, as well as its technological lag behind the United States. The existence of the 130 series and other similar clones underscores the global influence of the 7400 series architecture and its role as a de facto international standard for digital logic, even across geopolitical divides.

## Notable For
- **Soviet Clone**: The series is primarily known for being a Soviet clone of the American SN54 series of TTL logic circuits.
- **Military-Grade Basis**: It was based on the military-grade SN54 family, not the commercial SN74 family, indicating its intended use in high-reliability applications.
- **Early Soviet TTL**: It was an early Soviet implementation of transistor-transistor logic (TTL), a dominant digital circuit technology of its time.
- **Flatpack Packaging**: The series utilized the Flatpack package, a surface-mount form factor common for early integrated circuits in military and aerospace systems.

## Body
### ### Origins and Development
The 130 series of integrated circuits was developed in the Soviet Union. Research and development for the series commenced in 1967, and industrial-scale manufacturing continued until 1975. The entire series was designed as a direct clone of the American SN54 series, which was first introduced in 1964.

### ### Technical Characteristics
- **Logic Family**: The circuits are part of the transistor-transistor logic (TTL) family.
- **Classification**: The 130 series is an instance of an "integrated circuit series" and a subclass of "integrated circuit" and "transistor-transistor logic."
- **Packaging**: Components in this series used the Flatpack package type.
- **Nomenclature**: The part numbering for the series complied with the standardized Soviet integrated circuit designation system.

### ### Relationship to the 7400 Series
The 130 series is the Soviet counterpart to the American 7400 series of logic ICs. Specifically, it is a clone of the SN54 family, which is the military-temperature-range version of the family. The original SN5400 was introduced by Texas Instruments in 1964, followed by the commercial-grade SN7400 in 1966. The development of the 130 series allowed the Soviet electronics industry to build systems compatible with this widespread logic architecture.