US 7,321,241 B1 | ||
Bidirectional buffer with slew rate control and method of bidirectionally transmitting signals with slew rate control | ||
Chadwick N. Marak, San Jose, Calif. (US); Jeffrey C. Dunnihoo, Bertram, Tex. (US); and Adam J. Whitworth, Los Altos, Calif. (US) | ||
Assigned to California Micro Devices, Milpitas, Calif. (US) | ||
Filed on Jun. 15, 2006, as Appl. No. 11/424,535. | ||
Int. Cl. H03K 19/0175 (2006.01) |
U.S. Cl. 326—83 [326/26] | 14 Claims |
1. A bidirectional buffer provided on an integrated circuit that provides slew rate control for a forward signal along with
external resistive and capacitive elements comprising:
a first node that functions as an input node for a forward signal and an output node for a reverse signal;
a second node that functions as an output node for a forward signal and an input node for a reverse signal;
a signal line disposed between the first and second node, with a pass transistor disposed thereon;
a first circuit that provides impedance control to the forward signal when input onto the first node, the first circuit coupled
to the first node and to at least one of the resistive elements;
a second circuit that provides slew rate control of the forward signal output onto the second node, the second circuit coupled
to the second node and to at least another one of the resistive elements and to the capacitive element.
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