# 170 series integrated circuits

> TTL interface ICs for core memory and telecommunications

**Wikidata**: [Q131730695](https://www.wikidata.org/wiki/Q131730695)  
**Source**: https://4ort.xyz/entity/170-series-integrated-circuits

## Summary
The 170 series is a family of Soviet-era transistor-transistor logic (TTL) integrated circuits designed as interface components for magnetic-core memory systems and telecommunications equipment. Developed by the Mikron Group under the NIIMÉ institute, these chips were physically packaged in dual in-line formats and conformed to Soviet integrated circuit designation standards.

## Key Facts
- The 170 series uses a dual in-line package (DIP) for physical mounting.
- An image of a 170 series IC (К170УП2) is available at: https://commons.wikimedia.org/wiki/Special:FilePath/К170УП2_Азон.jpg
- These ICs were used in magnetic-core memory systems and telecommunications devices.
- The series was developed by the Mikron Group, with the NIIMÉ institute as the specifying body (qualifier P1810).
- It is an instance of an integrated circuit series.
- It is a subclass of transistor-transistor logic (TTL) integrated circuits.
- The series complies with Soviet integrated circuit designation standards.
- There is 1 sitelink associated with this series on Wikidata.
- The Wikimedia Commons category is "170 series integrated circuits".
- A detailed description is available at: http://www.155la3.ru/k170.htm
- The country of origin is the Soviet Union.
- The series is described in the Wikimedia Commons project (wikipedia_languages: commons).
- The Wikidata description states: "TTL interface ICs for core memory and telecommunications".
- The 170 series is considered the same as the 169 series integrated circuits, per the reference: http://www.155la3.ru/k170.htm

## FAQs
**What are the 170 series integrated circuits?**
They are a family of transistor-transistor logic (TTL) interface integrated circuits designed for connecting to magnetic-core memory and telecommunications equipment. Developed in the Soviet Union, they were packaged in dual in-line formats.

**Who developed the 170 series?**
The Mikron Group developed the series, with the NIIMÉ institute serving as the specifying body. This collaboration was typical of Soviet semiconductor design and production.

**What applications used the 170 series?**
Primary applications included magnetic-core memory systems, which were prevalent in early computers, and telecommunications devices, where reliable signal interfacing was critical.

**How are the 170 series chips packaged?**
They use a dual in-line package (DIP), a common through-hole mounting format that facilitated easy insertion into circuit boards during the era.

**Is the 170 series related to other integrated circuit series?**
Yes, it is considered the same as the 169 series integrated circuits according to historical documentation, indicating possible design similarities or shared specifications.

## Why It Matters
The 170 series represents a critical component class in the Soviet Union's semiconductor industry during the era of magnetic-core memory and early digital telecommunications. As TTL interface ICs, they provided the essential signal conditioning and driving capabilities needed to connect logic circuits to memory arrays and communication lines, enabling the construction of reliable computing and networking infrastructure. Their development by the Mikron Group and NIIMÉ highlights the centralized, institute-driven model of Soviet electronics engineering. These chips are historically significant as they powered foundational technologies before the widespread adoption of semiconductor memory and modern telecom standards, making them important artifacts for understanding Cold War-era computing and the global diffusion of TTL technology.

## Notable For
- **Soviet-era design and production:** Entirely developed and manufactured within the Soviet Union's planned electronics industry.
- **Specialized interface function:** Specifically engineered as interface ICs for the demanding electrical environments of magnetic-core memory and telecommunications.
- **Compliance with national standards:** Adhered strictly to the Soviet integrated circuit designation system, reflecting state-mandated technical norms.
- **Association with key institutes:** Developed under the NIIMÉ institute, a major Soviet research body for microelectronics.
- **Documented equivalence:** Recognized as functionally identical to the 169 series, suggesting a shared design lineage or specification set.
- **Preservation in digital archives:** Has a dedicated Wikimedia Commons category and a referenced descriptive page (155la3.ru), aiding historical preservation.

## Body

### History and Development
The 170 series integrated circuits were developed in the Soviet Union. The primary developer was the Mikron Group, a major Soviet semiconductor manufacturer, with the NIIMÉ institute (Научно-исследовательский институт микроэлектроники, or Scientific Research Institute of Microelectronics) serving as the specifying body, as indicated by the Wikidata qualifier P1810. A detailed historical and technical description of the series is preserved at the Russian-language resource http://www.155la3.ru/k170.htm, which serves as a key reference for this entity. The series is part of the broader class of integrated circuit series, defined as model series sharing the same part prefix.

### Technical Classification and Standards
The 170 series is formally an **instance of** an integrated circuit series. Its **subclass_of** relationship defines it as a member of the transistor–transistor logic (TTL) family of integrated circuits. A defining characteristic is its **compliance_with** the Soviet integrated circuit designation system, the official naming and numbering standard for all Soviet and later Russian ICs. This classification places it within a specific technical and regulatory framework distinct from Western (e.g., JEDEC) standards.

### Physical Design and Packaging
The series utilizes a **dual in-line package (DIP)**. This through-hole packaging technology was standard for the era, allowing for straightforward insertion into printed circuit boards via sockets or soldering. A visual example of a specific member, the К170УП2, is documented in a Wikimedia Commons file, providing a tangible reference for the physical implementation of the series.

### Primary Applications
The core **used_by** relationships define the series' purpose. It was designed for use in **magnetic-core memory** systems, the dominant random-access memory technology before the advent of semiconductor RAM. Additionally, it was used in **telecommunications devices**, where its TTL interface capabilities would have been essential for signal level conversion, buffering, and driving lines in switching and transmission equipment.

### Designation, Series Relationships, and Documentation
As an integrated circuit series, it belongs to the model series class, where individual chips share a common prefix (e.g., "170"). A notable relationship is its **said_to_be_the_same_as** status with the **169 series integrated circuits**. This equivalence, sourced from the reference URL http://www.155la3.ru/k170.htm, suggests the two series may represent a single product line with minor variations, different naming conventions, or a direct successor/predecessor relationship under the Soviet designation system.

The entity's digital footprint includes a **sitelink_count** of 1 on Wikidata and a dedicated **commons_category** titled "170 series integrated circuits". Its **wikidata_description** succinctly captures its essence: "TTL interface ICs for core memory and telecommunications". The **wikipedia_languages** property points to the Wikimedia Commons project as its primary associated knowledge base, not a Wikipedia article.

### Geographic and Industrial Context
The **country_of_origin** is unequivocally the **Soviet Union**. This situates the 170 series within the specific technological, industrial, and geopolitical context of the USSR's microelectronics sector, which operated under different economic and research paradigms than Western counterparts. The involvement of the Mikron Group and NIIMÉ exemplifies the typical Soviet model of institute-led research and state-factory production.

## References

1. [Source](http://www.155la3.ru/k170.htm)