TTL to CMOS input buffer

Details TTL to CMOS input buffer TTL to CMOS input buffer

1981-12-28

1984-12-25

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307363, 307443, 307451, 307548, H03K 19003, H03K 19094

Patent

active

044906331

ABSTRACT:
A TTL to CMOS input buffer accomplishes buffering a TTL signal to a CMOS signal without static current flow when the TTL is a logic "1" by isolating the input from an input P channel transistor and using feedback from an input N channel transistor to turn off the P channel transistor. A second P channel transistor is used to couple a positive power supply voltage to the input P channel transistor in response to an output from the N channel transistor.

REFERENCES:
patent: 3675144 (1972-07-01), Zuk
patent: 3755690 (1973-08-01), Smith
patent: 3906254 (1975-09-01), Lane et al.
patent: 4080539 (1978-03-01), Stewart
patent: 4216390 (1980-08-01), Stewart
patent: 4295065 (1981-10-01), Hsieh et al.
patent: 4307308 (1981-12-01), Sano

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