MAX499
Description
The MAX498/MAX499 are high-speed, quad/triple, single-pole/double-throw video switches with on-board closed-loop buffer amplifiers. The buffer amplifiers feature
+6d B gain (AVCL = 2V/V), 250MHz -3d B bandwidth, 70MHz 0.1d B gain flatness, and 1250V/µs slew rate. Fast switching time (3ns) and fast settling time (12ns for a 4V step) make these devices excellent choices for a wide variety of video applications. The low differential gain/phase errors (0.03%/0.06°) and wide bandwidth make them ideal for both posite-video and RGB applications. The amplifiers are capable of delivering ±2.5V into back-terminated 50 Ω or 75 Ω cables, and they deliver ±2V to a 75Ω load, allowing multiple cables to be driven from a single output. For implementation of large switch arrays, a low-power disable mode places the amplifier outputs in a highimpedance state. Channel selection and output enable/disable are controlled by four TTL/CMOSpatible logic inputs. Each video input is isolated by an...
