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what is sleep transistor

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aravindh91

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i dont know what does sleep transistor mean and i cant get exact definition pls help me frnds
 

kripacharya

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Its a radio which switchs off automatically after pre-set time interval.

:-?

or you could google and find something like this ... sleep transistor
 

phuang

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i dont know what does sleep transistor mean and i cant get exact definition pls help me frnds

Power-gating is one of the most effective standby-leakage reduction technical recently developed. In a power gating design, sleep transistor(ST) are used as switches to shut off power supplies of the standby circuits, as shown in fig. 1. A ST is referred to either a PMOS or NMOS high Vth transistor that connects permanent power supply to circuit power supply which is commonly called “virtual power supply”. The PMOS ST is used to switch VDD supply and is hence called “header switch”. The NMOS ST controls VSS supply can hence is named “footer switch”. In sub-90nm designs, either header or footer switch is only used due to the constraints of sub-1V power supply voltage and area penalty of the STs
 

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