BiCMOS TTL to CMOS level translator

Details BiCMOS TTL to CMOS level translator BiCMOS TTL to CMOS level translator

1992-05-06

1994-01-04

Westin, Edward P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307443, 307475, H03K 1908, H03K 190175, H03K 1901

Patent

active

052763625

ABSTRACT:
The present invention includes a circuit having an input section that is operated from an operating voltage which is lower than a supply voltage of the circuit. The operating voltage is established so that the operating voltage minus the voltage of a high level TTL signal is less than an upper level threshold voltage of the input section. The circuit couples the output of the input section to the supply voltage thereby increasing the voltage on the output of the input section to a voltage greater than the operating voltage. In addition, the circuit enables a current source during a portion of a low-to-high transition on an output of the circuit. The current source provides high current drive during the portion of the transition. Since the current source is only enabled during the portion of the transition, static power dissipation is minimized.

REFERENCES:
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patent: 5144167 (1992-09-01), McClintock
patent: 5146118 (1992-09-01), Nakamura et al.

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