The AD53509 is a single chip that performs the pin electronics functions of driver, comparator and active load in ATE VLSI and memory testers. In addition, a Schottky diode bridge for the active load and a VCOM buffer are included internally. The driver is a proprietary design that features three active states: Data High Mode, Data Low Mode and Term Mode as well as an Inhibit State. This facilitates the implementation of high speed active termination. The output voltage range is 2 V to +7 V to accommodate a wide variety of test devices. The output leakage is typically less than 250 nA over the entire signal range.