Buffer device having a booster circuit for a semiconductor memor

Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons

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307475, H03K 190175

Patent

active

051700727

ABSTRACT:
A buffer device having a booster circuit for a semiconductor memory device offers a solution to a deficient boost operation of the booster circuit due to a skew in an address signal. The buffer device has an address transition signal output circuit for outputting a HIGH signal for a specified time when detecting transition of an address signal, and a switching circuit for outputting to the booster circuit, in accordance with output from the address transition signal output circuit, either a data signal expressing data read from an address specified by the address signal or a precharge signal of a specified time length. The switching circuit, when receiving a HIGH signal from the address transition signal output circuit, outputs the precharge signal, and when receiving a LOW signal, outputs the data signal. The booster circuit boosts the data signal to a specified level when the data signal is HIGH. However, the booster circuit stops a boost operation and is precharged when the precharge signal is inputted. A transistor circuit is connected with the booster circuit for bringing, in response to output from the booster circuit, an electric potential of an output terminal of the buffer device and therefore of the semiconductor memory device to a specified high or low level in accordance with the output level from the booster circuit.

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