Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1989-03-31
1991-09-10
Hudspeth, David
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307455, 307456, 307465, 307443, H03K 190175, H03K 1920, H03K 1716, G06F 738
Patent
active
050476726
ABSTRACT:
A circuit (90) converts a true ECL signal to a true TTL signal. The circuit includes a differential circuit (180) that receives an ECL signal having high and low values. The differential circuit produces a differential signal therefrom that has a high value in response to one of the high and low values of the true ECL signal, and a low value in response to the other of the high and low values of the true ECL signal. A first translator circuit (36, 64) has an input (32) coupled to the differential circuit (180). The first translator circuit (36, 64) transmits a true low TTL output (56) signal having a voltage level referenced to the voltage level of a TTL low supply voltage in response to receiving a high value of the differential signal. A second translator circuit (46, 52) has an input (38) and is coupled to a TTL high supply voltage and the output (56). An input signal appearing on the input (38) of the second translator circuit has a voltage level related to the voltage level of the differential signal (32). The second translator circuit (46, 52) transmits a high TTL output signal having a voltage level referenced to the voltage level of the TTL high supply voltage in response to the differential signal (32) being at a low value.
REFERENCES:
patent: 4527079 (1985-07-01), Thompson
patent: 4644194 (1987-02-01), Birrittella et al.
patent: 4677320 (1987-06-01), Hannington
patent: 4758746 (1988-07-01), Birkner et al.
patent: 4835771 (1989-05-01), Moussie
patent: 4841176 (1989-06-01), Millhollan et al.
Bhuva Rohit L.
Bonneau, Jr. Walter C.
Chen Allen Y.
Gruebel Robert L.
Helmick Robert A.
Barndt B. Peter
Comfort James T.
Hudspeth David
Phan Trong
Sharp Melvin
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