| 摘要 |
A signal driver receives an input signal and an enable signal, and generates an output signal from the input signal when the enable signal has an active state. When the enable signal has an inactive state, the signal driver draws substantially zero supply current regardless of the level of the input signal. The enable signal may be the sense-amplifier enable signal. The signal driver may also include an input circuit that receives the input signal and generates an intermediate signal from the input signal when the enable signal has the first state. An output circuit is coupled to the input circuit, receives the intermediate signal, and generates the output signal from the intermediate signal. A switch circuit is coupled to the input circuit, receives the enable signal, and cuts off substantially all supply current to the input circuit when the enable signal has the second state.
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