General Description
The Supertex MD1811 is a high speed, quad MOSFET driver designed to drive high voltage P and N-channel MOSFETs for medical ultrasound applications and other applications requiring a high output current for a capacitive load. The high-speed input stage of the MD1811 can operate from a 1.2 to 5.0 volt logic interface with an optimum operating input signal range of 1.8 to 3.3 volts. An adaptive threshold circuit is used to set the level translator switch threshold to the average of the input logic 0 and logic 1 levels. The input logic levels may be ground referenced, even though the driver is putting out bipolar signals. The level translator uses a proprietary circuit, which provides DC coupling together with high-speed operation.

FEATUREs
► 6ns rise and fall time
► 2 A peak output source/sink current
► 1.2V to 5V input CMOS compatible
► 5V to 12V total supply voltage
► Smart Logic threshold
► Low jitter design
► Quad matched channels
► Drives two P- and two N-channel MOSFETs
► Outputs can swing below ground
► Low inductance quad fl at no-lead package
► High-performance thermally-enhanced

APPLICATIONs
► Medical ultrasound imaging
► Piezoelectric transducer drivers
► Nondestructive evaluation
► PIN diode driver
► Clock driver/buffer
► High speed level translator