Artifact Details


Beeson patent notebook (#20)

Catalog Number







Beeson, R.H.

Biographical Notes

R.H. Beeson joined Fairchild circa mid-1958 and remained at least until mid-1961. He worked for Vic Grinich on the application of transistors for high-speed switching in logic applications. He independently invented the Transistor Transistor Logic (TTL) logic configuration that was described in the 1962 ISSCC paper “New Forms of All-Transistor Logic” co-authored with H. W. Ruegg. Commercialized by Sylvania and copied and successfully promoted by Texas Instruments, TTL formed the workhorse digital IC family of the 1970s. In the late 1960s he was working for Amelco Semiconductor.


Fairchild Semiconductor Corporation

Identifying Numbers

Document number 20


Approximately 81 dated entries over 152 pages.


12 x 10 inches


This volume contains circuit schematics, waveforms and test conditions used to record delay, rise and fall times of switching transistors over a wide variety of conditions with tables of results. Other topics include the circuit design of a high-speed VI plotter (p. 49); design and testing of complimentary switching circuits (p. 58); collecting data for the 2N696/7 transistor (p. 108); discussion of merits of different logic configurations (p. 127); thermal time constant measurements of switching transistors.



Collection Title

Fairchild Semiconductor notebooks and technical papers


The author contributed to the following R&D Technical Reports (TR) and papers in professional publications during his service at Fairchild:

TR33 Short report on avalanche switching of standard and epitaxial FT-1340’s utilizing modified collector triggering (1961-01-16).

Allison, D., Beeson, R. and Shultz, R., KMC planar transistors in microwatt logic circuitry . 1961 IEEE International Solid-State Circuits Conference: Digest of Technical Papers, vol. IV (1961): 62 – 63.

Beeson, R. H., Haas, I. and Grinich, V. H., Thermal response of transistors in the avalanche mode. National Electronics Conference, 1959-10-12-1959-10-14. (Reprinted as Fairchild TP-6)

Beeson, R. and Ruegg, H., New forms of all-transistor logic. 1962 IEEE International Solid-State Circuits Conference: Digest of Technical Papers. vol. V (1962): 10-11.

Maxwell, D. A., Beeson, R. H. and Allison, D. F., The minimization of parasitics in integrated circuits by dielectric isolation. IEEE Transactions on Electron Devices, vol. 12, iss. 1 (1965): 20-25.


Gift of Texas Instruments Incorporated

Lot Number