Typical package markings include a pin 1 stripe and/or pin 1 dot, the company logo, and up to four lines of text, described below.
Figure: Package Markings Format
Product name including the package ordering code, for example, 74LVT2244D. Note that commercial FAST products are marked without the N prefix, while industrial FAST products are marked with the I prefix.
Batch information for tracing lot history, for example, B38090ME.
The first 3 letters contain codes to indicate the diffusion center, the assembly center, and the final-test center of the device. The 4 numbers that follow indicate the assembly date code in the format YYWW. The next character is an alpha-numeric code representing the revision of the silicon die contained within the package. The final letter indicates the release status of the product as follows:
- <blank> for released products
- X for development samples
- Y for qualification samples
An example might be: HRn9744 F X.
On smaller packages, the markings may be condensed to two lines or even one line. Truncation of characters within a line may also occur on small packages.
- PicoGate and MicroPak Package Markings (Single-, Dual-, and Triple-Gate Logic)
- Identification Labels