SEMICONDUCTOR DEVICE
First Claim
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1. A semiconductor device comprising:
- a first buffer circuit transmitting input signals;
a second buffer circuit having a lower drive capability than the first buffer circuit and transmitting the input signals; and
a control circuit detecting transitions of the input signals, and activating the first buffer circuit during a period when the input signals make the transitions.
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Abstract
A semiconductor device includes a first buffer circuit transmitting input signals, a second buffer circuit having a lower drive capability than the first buffer circuit and transmitting the input signals, and a control circuit detecting transitions of the input signals, and activating the first buffer circuit during a period when the input signals make the transitions.
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Citations
15 Claims
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1. A semiconductor device comprising:
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a first buffer circuit transmitting input signals; a second buffer circuit having a lower drive capability than the first buffer circuit and transmitting the input signals; and a control circuit detecting transitions of the input signals, and activating the first buffer circuit during a period when the input signals make the transitions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A semiconductor device, comprising:
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a first and second buffer circuits coupled in parallel relative to input signals and transmitting the input signals, wherein the first buffer circuit includes; a first drive circuit to which the input signals are inputted; a first load coupled to the first drive circuit via a first switching circuit; and a first current source coupled to the first drive circuit via a second switching circuit, and the second buffer circuit includes; a second drive circuit of which drive capability is lower than the first drive circuit and to which the input signals are inputted; a second load which is N times (N>
1) of the first load, and coupled to the second drive circuit; anda second current source coupled to the second drive circuit, and wherein the first and second switching circuits are ON/OFF controlled in accordance with a detection result of the transitions of the input signals.
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Specification