# 137 series integrated circuits

> early Soviet series of ECL logic

**Wikidata**: [Q120135245](https://www.wikidata.org/wiki/Q120135245)  
**Source**: https://4ort.xyz/entity/137-series-integrated-circuits

## Summary
The 137 series integrated circuits are an early Soviet series of emitter-coupled logic (ECL) integrated circuits, introduced in 1969. They represent a foundational milestone in the Soviet semiconductor industry, utilizing dual in-line packaging for standardized physical mounting.

## Key Facts
- Introduced in 1969 as part of the Soviet integrated circuit series designation system.
- Uses dual in-line package (DIP) for physical mounting and standardization.
- Belongs to the emitter-coupled logic (ECL) family, known for high-speed performance.
- Originated from the Soviet Union during the Cold War era.
- Complies with Soviet integrated circuit designation standards.
- Documented in Russian at http://www.155la3.ru/k137.htm.
- Has a visual representation available on Wikimedia Commons.

## FAQs
### Q: What is the 137 series integrated circuits?  
A: The 137 series integrated circuits are an early Soviet series of emitter-coupled logic (ECL) circuits, introduced in 1969. They were designed for high-speed digital applications and followed Soviet designation standards.

### Q: When were the 137 series integrated circuits developed?  
A: They were developed and introduced in 1969, marking an early milestone in Soviet integrated circuit technology.

### Q: What packaging method did the 137 series use?  
A: They utilized the dual in-line package (DIP), a standardized physical mounting format common in the era.

### Q: How does the 137 series relate to other integrated circuits?  
A: It is a subclass of emitter-coupled logic and falls under the broader category of integrated circuit series, specifically complying with Soviet naming conventions.

## Why It Matters
The 137 series integrated circuits hold historical significance as a pioneering Soviet effort in high-speed ECL technology during the Cold War. They enabled the development of domestic digital systems and computing infrastructure, reducing dependency on Western designs. By adhering to Soviet designation standards and using dual in-line packaging, the series established a foundation for standardized semiconductor manufacturing in the USSR. Its documentation and preservation in Russian archives provide valuable insights into Soviet technological independence and design philosophies, bridging gaps in Cold War-era electronics history.

## Notable For
- One of the earliest Soviet ECL (emitter-coupled logic) series, predating many Western equivalents.
- Introduction in 1969, demonstrating early Soviet advancement in high-speed digital integrated circuits.
- Compliance with Soviet integrated circuit designation standards, reflecting standardized national design protocols.
- Use of dual in-line package (DIP), emphasizing standardized physical mounting for reliability and manufacturability.
- Developed entirely within the Soviet Union, exemplifying self-reliance in semiconductor technology during geopolitical isolation.

## Body
### Overview
The 137 series integrated circuits are an early model series of integrated circuits sharing the Soviet designation prefix "137." They belong to the emitter-coupled logic (ECL) family, a high-speed digital logic type known for fast switching characteristics.

### Technical Specifications
- **Logic Type**: Emitter-coupled logic (ECL), optimized for high-speed operation.
- **Packaging**: Dual in-line package (DIP) for standardized physical mounting.
- **Country of Origin**: Soviet Union.
- **Inception Year**: 1969.

### Documentation and Classification
- **Described At**: Russian-language documentation available at http://www.155la3.ru/k137.htm.
- **Instance Of**: Integrated circuit series and integrated circuit class.
- **Subclass Of**: Emitter-coupled logic and integrated circuit.
- **Complies With**: Soviet integrated circuit designation standards.
- **Visual Resources**: Featured on Wikimedia Commons with image URL [https://commons.wikimedia.org/wiki/Special:FilePath/1lp372_1.jpg](https://commons.wikimedia.org/wiki/Special:FilePath/1lp372_1.jpg).

### Historical Context
Developed in 1969, the series emerged during a period of accelerated Soviet semiconductor development. It reflects the nation's drive for technological self-sufficiency, particularly in defense and computing applications. The series was part of a broader initiative to create standardized integrated circuit families under unified naming conventions.