Semiconductor integrated circuit with a data transmission circui

Details Semiconductor integrated circuit with a data transmission circui Semiconductor integrated circuit with a data transmission circui

1995-12-15

1997-06-24

Nelms, David C.

Static information storage and retrieval

Addressing

Plural blocks or banks

365 52, 365 63, G11C 700

Patent

active

056423233

ABSTRACT:
In a driver circuit for driving a pair of data lines, the amplitude of a differential input signal is reduced from 2.5 V to 0.6 V, which is smaller than a conventional lower-limit source voltage (approximately 1.5 V). The amplitude of the differential signal transmitted through the pair of data lines is amplified to 2.5 V by an amplifying circuit and the resulting signal is then latched by a latch circuit. After the latching by the latch circuit, the operation of the amplifying circuit is halted. The driver circuit is constituted solely by a plurality of NMOS transistors so as not to increase a leakage current flowing in the off state. Here, the threshold voltage of the NMOS transistor positioned on the ground side is reduced to a conventional lower-limit value (0.3 V to 0.6 V), while the threshold voltage of the NMOS transistor on the power-source side to a value lower than the above lower-limit value (0 V to 0.3 V), thereby enhancing a driving force of the NMOS transistor on the power-source side.

REFERENCES:
patent: 5305276 (1994-04-01), Uenoyama
patent: 5357478 (1994-10-01), Kikuda et al.
patent: 5428566 (1995-06-01), Robinson

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