November 1, 2021

Ti TMS0119 - single-chip calculator (1971) : weekend die-shot

Texas Instruments TMS0119 is part of TMS100-series of integrated single-chip calculators. Ti was first in the world (1971) to achieve this level of integration. Originally used in TI-2500 calculator. It is made using 10 um metal gate PMOS process (metal width = 10 um, metal spacing = 10 um, diffusion width = 10 um, diffusion spacing = 10 um).

You can read much more about Texas Instruments calculators & their microchips at http://www.datamath.org/, which is a result of countless years of Joerg Woerner's dedication.

Die size 5874x5800 µm.


October 11, 2021

Toshiba TC74HC181P - 4-bit ALU : weekend die-shot

Together with 74*182, Toshiba TC74HC181P could be used to build custom discrete CPU.
Die size 2730x2722 µm. Datecode 8813H.


August 2, 2021

AMD LF356H - JFET opamp : weekend die-shot

Surprised to see analog part from AMD? Me too. It's from the era when AMD was not yet crushing desktop CPU world like a hydraulic press.
Package photo below. Die size 1877x1120 µm. Datecode 8035YP.



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August 1, 2021
June 1, 2021
May 16, 2021

1NT591A - array of 2 npn BJT transistors : weekend die-shot

Designed for input stages of differential amplifiers. Datecode 0675.
Die size 1241x748 µm.