Emitter coupled logic (ECL) gate and method of forming same

Details Emitter coupled logic (ECL) gate and method of forming same Emitter coupled logic (ECL) gate and method of forming same

1996-05-31

1998-10-27

Santamauro, Jon

Electronic digital logic circuitry

Function of and, or, nand, nor, or not

Bipolar transistor

326 18, 326125, H03K 19086

Patent

active

058282378

ABSTRACT:
A fully differential, low voltage ECL gate (300) receives complementary logic signals (A, Ax, B, Bx) and provides them to first and second differential pairs (306, 318). Collectors from different differential pairs (306) and (318) are coupled together and provided with independent current paths through load resistors, R1, (336) and R2 (338). Differential outputs (OUT, OUTx) are generated at the common collector nodes (344, 346). The load resistors (336, 338) are selected to control the gain and ensure that a minimum switching threshold (V.sub.th) is maintained under all differential input signal conditions of (A, Ax, B, and Bx) for a logical AND or OR function.

REFERENCES:
patent: 4516039 (1985-05-01), Matsuzaki et al.
patent: 4546272 (1985-10-01), Suzuki et al.
patent: 4675553 (1987-06-01), Price et al.
patent: 4714841 (1987-12-01), Shoji et al.
patent: 4928024 (1990-05-01), Shimotsuhama et al.
patent: 5079452 (1992-01-01), Lain et al.
patent: 5220212 (1993-06-01), Sinh
patent: 5289055 (1994-02-01), Razavi
patent: 5315176 (1994-05-01), Popescu
Razavi, B., Ota, Y., Swartz R. G., "Design Techniques for Low-Voltage High Speed Digital Bipolar Circuits," IEEE, Journal of Solid-State Circuits, vol, 29, No.3, Mar. 1994.
Horenstein. Microelectronic Circuits and Devices. Prentice Hall, 1990. pp. 492-497 and 785-786.

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