Current amplifier and data bus circuit

Electronic digital logic circuitry – Tri-state

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Details

326 57, 326 82, 326 83, H03K 1900, H03K 190175

Patent

active

058217770

ABSTRACT:
There is provided a current amplifier and a data bus circuit using such a current amplifier capable of reducing input impedance with a smaller circuit area than the conventional so that high-speed operation of the data bus lines can be realized without a remarkable increase of the circuit area. The current amplifier includes first and second field effect transistors N11, N12 respectively provided between a pair of input terminals I, Ib and a first potential supply terminal Vcc, and third and fourth field effect transistors N13, N14 for supplying output power to a pair of output terminals O, Ob. The gate of the third field effect transistor is connected to the first input terminal and to the source of the first field effect transistor the gate of which is connected to the drain of the third field effect transistor, whereas the gate of the fourth field effect transistor is connected to the second input terminal and to the source of the second field effect transistor the gate of which is connected to the drain of the fourth field effect transistor.

REFERENCES:
patent: 5239508 (1993-08-01), Nomura et al.
patent: 5264743 (1993-11-01), Nakagome et al.
patent: 5353249 (1994-10-01), Itano
patent: 5365488 (1994-11-01), Matsushita et al.
"VLSI Memory" by K. Ito, pp. 170-173, published by Baifukan, Japan.

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