# 564 series integrated circuits

> Soviet mil-grade variant of the 4000 CMOS series

**Wikidata**: [Q115793033](https://www.wikidata.org/wiki/Q115793033)  
**Source**: https://4ort.xyz/entity/564-series-integrated-circuits

## Summary
564 series integrated circuits are the Soviet military-grade variant of the CMOS 4000 series integrated circuits. They are a family of integrated circuits developed and produced in the Soviet Union, based on the 4000 CMOS designs and intended for military use.

## Key Facts
- The 564 series is a Soviet mil-grade variant of the 4000 CMOS integrated circuit series.
- Country of origin: Soviet Union.
- Primary intended use: military.
- Technology: CMOS.
- Packaging: Flatpack.
- Based on: 4000 series integrated circuits.
- Inception: research and development began in 1973; industrial manufacturing began in 1976.
- Instance of: integrated circuit series; subclass of 4000 series integrated circuits.
- Complies with: Soviet integrated circuit designation.
- Commons image (example): https://commons.wikimedia.org/wiki/Special:FilePath/564ИМ1.jpg
- Commons category: 564 series integrated circuits.
- Wikidata sitelink count: 1.

## FAQs
### Q: What are 564 series integrated circuits?
A: The 564 series are Soviet military-grade integrated circuits derived from the CMOS 4000 series. They were developed and manufactured in the Soviet Union for military applications.

### Q: How are the 564 series related to the 4000 series?
A: The 564 series are based on the 4000 series integrated circuits, making them a subclass and mil-grade variant of that CMOS family.

### Q: When were the 564 series developed and manufactured?
A: Research and development for the 564 series began in 1973, and industrial manufacturing started in 1976.

### Q: What technology and packaging do the 564 series use?
A: The 564 series use CMOS technology and were supplied in flatpack packages.

## Why It Matters
The 564 series represents the Soviet effort to produce militarized variants of an established CMOS family (the 4000 series) under its own integrated circuit designation system. By providing a mil-grade version of 4000-series designs, the 564 series enabled the use of CMOS logic functions within Soviet military equipment and programs that required components compliant with Soviet naming and qualification schemes. Its defined inception timeline (R&D from 1973 and industrial manufacture from 1976) places the series in the Cold War era of electronics development, indicating deliberate adaptation and domestic production of CMOS technologies for military use. The series’ specification of CMOS technology and flatpack packaging identifies its basic electrical and mechanical characteristics. Compliance with Soviet integrated circuit designation ensured standardized identification and deployment across military supply chains.

## Notable For
- Being the Soviet military-grade subclass of the widely referenced 4000 CMOS series.
- Explicitly developed with R&D beginning in 1973 and moved to industrial manufacturing in 1976.
- Specified use of CMOS technology combined with flatpack packaging.
- Compliance with the Soviet integrated circuit designation system.
- Originating and produced in the Soviet Union.

## Body
### Overview
- The 564 series are an integrated circuit series from the Soviet Union.
- They are described as a mil-grade variant of the 4000 CMOS series.
- The series is classified as an integrated circuit series and as a subclass of the 4000 series integrated circuits.

### Technology and Packaging
- Semiconducting technology: CMOS.
- Packaging format: Flatpack.
- Intended application domain: military use.

### Chronology
- 1973: Research and development phase began (qualifier: research and development).
- 1976: Industrial manufacturing started (qualifier: industrial manufacturing).

### Classification and Compliance
- Instance of: integrated circuit series.
- Subclass of: 4000 series integrated circuits.
- Complies with: Soviet integrated circuit designation (standard naming/identification used in the Soviet Union).

### Relationship to 4000 Series
- The 564 series is explicitly based on the 4000 series integrated circuits.
- It functions as a mil-grade variant, indicating adaptation of 4000-series CMOS designs for military requirements within the Soviet system.

### Media and References
- Representative image available: https://commons.wikimedia.org/wiki/Special:FilePath/564ИМ1.jpg
- Commons category: 564 series integrated circuits.
- Wikidata sitelink count: 1.