US Patent 8009481 System and method for bit-line control

In one embodiment, a bit-line driver has a first driver having a source terminal coupled to a high-voltage supply bus and a drain terminal coupled to the bit-line, and a second driver having a source terminal coupled to a high-voltage return bus and a drain terminal coupled to the bit line. The bit-line driver also has a first pre-driver coupled to a gate terminal of the first driver and a second pre-driver coupled to a gate terminal of the second driver. The first and second drivers use a first type of transistor, and the first and second pre-drivers use a second type of transistor. The first type of transistor is rated at a higher voltage than the second type of transistor.