TTL To CMOS input buffer

Details TTL To CMOS input buffer TTL To CMOS input buffer

1983-05-05

1984-10-02

Anagnos, Larry N.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307296R, 307354, 307579, H03K 1710, H03K 19094, H03K 1920

Patent

active

044750501

ABSTRACT:
A CMOS level shifter with a reference voltage generator provides a TTL to CMOS input buffer. The reference voltage generator provides a reference voltage which is responsive to the voltage level of the TTL input signal. The reference voltage is kept sufficiently low to prevent an input P channel transistor from turning on when the TTL input signal is at a logic high even when the voltage level is at a minimum for a logic high.

REFERENCES:
patent: 3739194 (1973-06-01), Freeman et al.
patent: 3975649 (1976-08-01), Kawagoe et al.
patent: 4023050 (1977-05-01), Fox et al.
patent: 4229668 (1980-10-01), Ebihara et al.
patent: 4295065 (1981-10-01), Hsieh et al.
patent: 4380710 (1973-04-01), Cohen et al.
Dingwall, "TTL-to-CMOS Buffer Circuit", RCA Tech. Notes, TN, No. 1114, Jun. 1975.

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