Programmable output buffer

Details Programmable output buffer Programmable output buffer

1982-06-07

1984-11-06

Anagnos, Larry N.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307451, 307579, 307585, 307270, H03K 19094, H03K 1920, H03K 17687

Patent

active

044814321

ABSTRACT:
A structure and method are provided wherein a single output buffer stage (50) is provided which can be programmed to function either as an open drain output buffer or a CMOS Push-Pull output buffer. The output buffer stage constructed in accordance with this invention is programmed in one of several manners. In one embodiment of this invention, the fabrication steps utilized to program the output buffer are the enhancement and depletion dopings, whereby certain devices of the output buffer are programmed to either remain always turned off or always turned on, thus programming the output buffer to serve either as an open drain output buffer or as a CMOS push-pull output buffer.

REFERENCES:
patent: 3651340 (1972-03-01), Cliff
patent: 4069430 (1978-01-01), Masuda
patent: 4084105 (1978-04-01), Teranishi et al.
patent: 4209713 (1980-06-01), Satou et al.
patent: 4223277 (1980-09-01), Taylor et al.
patent: 4274014 (1981-06-01), Sebade, Jr.
patent: 4327368 (1982-04-01), Uehida
patent: 4384220 (1983-05-01), Segawa et al.
Krick, "Complementary MNOS Electronically Alternable Read-Only Memory", IBM T.D.B., vol. 13, No. 1, 6-1970, pp. 263-264.

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