Electronic digital logic circuitry – Interface – Current driving
Patent
1997-12-31
2000-04-25
Tokar, Michael
Electronic digital logic circuitry
Interface
Current driving
326 68, 326121, 326 80, 326 81, 326 87, 326 31, 326 63, 327108, 327109, H03K 1716, H03K 190175, H03B 100
Patent
active
060548754
ABSTRACT:
An output buffer to serve as an interface between a main logic circuit and a peripheral device is described. The output buffer includes a first transistor adapted to be coupled to a first voltage supply and an output terminal. The first transistor is designed to charge the output terminal to a first state. A pull-down network to charge the output terminal to a second state is also included. The pull-down network is adapted to be coupled between the output terminal and a second voltage supply and is designed for alternate operation with the first transistor. The output buffer also includes a logic circuit to enable the first transistor and the pull-down network. The logic circuit is coupled to an enable terminal of the first transistor, the pull-down network, the first voltage supply, and the second voltage supply.
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patent: 5900750 (1999-05-01), Schmitt
Intel Corporation
Tan V
Tokar Michael
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