The MAX4385EEUK+T is a single-channel voltage-feedback op-amp from Analog Devices, aimed at applications where signal edge fidelity matters more than absolute bandwidth. The 450 V/µs slew rate means this part can swing a 2 Vpp output in roughly 4.4 ns — fast enough to handle composite video, CCD readout chains, or the front-end of a high-speed ADC driver where the input step must settle before the sampling aperture closes.
230 MHz bandwidth and rail-to-rail output — where they matter
The -3 dB bandwidth of 230 MHz gives you gain flatness out past 50 MHz with a closed-loop gain of 10, which covers most video distribution and IF amplifier stages. That matters when you're trying to drive an ADC full-scale without a second gain stage.
Supply current and output drive — the design budget
Quiescent supply current is 5.5 mA — not the lowest in class, but reasonable for a 230 MHz part. The 55 mA output current per channel means it can drive back-terminated 75 Ω video lines or a 50 Ω ADC input directly. If you're counting milliamps in a multi-channel system, this part draws about the same as a single high-speed comparator, so budget accordingly.
Package and board-fit: SOT-23-5
Housed in the SOT-23-5 package (SC-74A, SOT-753), this is a five-pin surface-mount part with a standard 0.95 mm pitch. The small footprint keeps parasitic capacitance low, which helps maintain the 230 MHz bandwidth. The Tape & Reel option is the usual production format — the Cut Tape variant is handy for prototypes or small-batch builds.
