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How to read datasheets

What is the main purpose of checking a datasheet's revision history?

  1. ATo check shipment inspection results for each production lot and trends in the product's field failure rate
  2. BTo understand specified values and content that have changed from previous versions and confirm that the document at hand is the latest
  3. CTo check when and how the product's price and lead time have changed
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Answer: B. To understand specified values and content that have changed from previous versions and confirm that the document at hand is the latest

Datasheets are revised after publication, with changes to specified values, corrections of errors, revised pin function descriptions, added packages and so on. The revision history summarizes the changes in each version, so you can check the differences between the version used for design and the latest one. To avoid having designed based on max values from an old version, record the version referenced at design time. Changes to the specifications or manufacturing process of products in mass production are generally communicated to customers separately through a product change notification (PCN).

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More How to read datasheets questions

  1. Which correctly describes the content of a document called "errata" provided for microcontrollers and similar devices?
  2. Which is the correct way to treat the "Typical Characteristics" graphs in a datasheet?
  3. On a graph with a logarithmic horizontal axis, which value is closest to the one represented by the position exactly midway between the 10 and 100 tick marks?
  4. Which correctly describes the difference between "absolute maximum ratings" and "recommended operating conditions" in a datasheet?
  5. On a prototype board, a surge was found that momentarily pushes the supply voltage above its absolute maximum rating. The IC still works normally afterward. Which is the appropriate way to think about this?