220px-FD1771 FDC Datasheet

A floppy disk controller datasheet.


A datasheet, data sheet, or spec sheet is a document summarizing the performance and other technical characteristics of a product, machine, component (e.g. an electronic component), material, a subsystem (e.g. a power supply) or software in sufficient detail to be used by a design engineer to integrate the component into a system. Typically, a datasheet is created by the component/subsystem/software manufacturer and begins with an introductory page describing the rest of the document, followed by listings of specific characteristics, with further information on the connectivity of the devices. In cases where there is relevant source code to include, it is usually attached near the end of the document or separated into another file.

Depending on the specific purpose, a data sheet may offer an average value, a typical value, a typical range, engineering tolerances,or a nominal value. The type and source of data are usually stated on the data sheet.

A data sheet is usually used for technical communication to describe technical characteristics of an item or product. It can be published by the manufacturer to help people choose products or to help use the products. By contrast, a technical specification is an explicit set of requirements to be satisfied by a material, product, or service.

Electronics component[]

A typical datasheet for an electronic component contains most of the following information:

  • manufacturer's name
  • product number and name
  • list of available package formats (with images) and ordering codes
  • notable device properties
  • short functional description
  • pin connection diagram
  • absolute minimum, maximum ratings (supply voltage, power consumption, input currents, temperatures for storage, operating, soldering, etc)
  • recommended operating conditions (as absolute minimum, maximum ratings)
  • DC specifications (various temperatures, supply voltages, input currents, etc.)
  • AC specifications (various temperatures, supply voltages, frequencies, etc.)
  • input/output wave shape diagram
  • timing diagram
  • physical details showing minimum/typical/maximum dimensions, contact locations and sizes
  • test circuit
  • ordering codes for differing packages and performance criteria
  • liability disclaimer regarding device use in certain environments such as nuclear power stations and life-support systems
  • application recommendations, such as required filter capacitors, circuit board layout, etc.
  • errata, often published prior to subsequent correction and relevant datasheet revision



See also[]