LM1813 - early anti-skid chip : weekend die-shot

LM1813 - anti-skid chip, was the largest analog die National Semiconductor had built to date as of 1974. It was built as a custom for a brake system vendor to Ford Motor company for use in their pickup trucks.

Die size 2234x1826 µm.



Test chips on the wafer:


Thanks for the wafers goes to Bob Miller, one of designers of this chip.