The AD53040 is a complete high speed pin driver designed for use in digital or mixed-signal test systems. Combining a high speed monolithic process with a unique surface mount package, this product attains superb electrical performance while preserving optimum packaging densities and long-term reliability in an ultrasmall 20-lead, SOP package with built-in heat sink. Featuring unity gain programmable output levels of 3 V to +8 V, with output swing capability of less than 100 mV to 9 V, the AD53040 is designed to stimulate ECL, TTL and CMOS logic families. The 500 MHz data rate capacity and matched output impedance allows for real-time stimulation of these digital logic families. To test I/O devices, the pin driver can be switched into a high impedance state (Inhibit Mode), electrically removing the driver from the path. The pin driver leakage current inhibit is typically 100 nA and output charge transfer entering inhibit is typically less than 20 pC.