| 摘要 |
In accordance with teachings of this invention a novel sense amplifier is provided. The sense amplifier includes an enable circuit which receives an enable input signal. This enable circuit includes a constant current source which consumes a small amount of power. The enable circuit provides an output signal which serves to disable the output pull up and pull down transistors of the sense amplifier, thereby providing a high impedance output signal. At the same time, the disabling output signal from the enable circuitry powders down the read circuitry, thereby minimizing power consumption.
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