The ISL59444 is a single-output 4:1 MUX-amp with a fixed gain of 1 and a 1GHz bandwidth. It is ideal for professional video switching, HDTV, computer display routing, and other high-performance applications. The device contains logic inputs for channel selection (S0, S1), latch control signals (LE1, LE2), and a three-state output control (HIZ) for individual selection of MUX amps that share a common video output line. All logic inputs have pull-downs to ground and may be left floating.
The ISL59444 is a single‑output 4:1 multiplexing amplifier with a fixed gain of 1 and up to 1 GHz (‑3 dB) bandwidth. It is intended for professional video switching, HDTV, computer‑display routing, and other high‑performance video applications.
The datasheet details electrical specifications, pin functions, recommended PCB layout practices, and handling precautions such as ESD protection, supply‑turn‑on slew‑rate limits, and output‑current limits.
| Bandwidth (‑3 dB) | 1 GHz (Vout = 200 mV p‑p) |
|---|---|
| Bandwidth (‑3 dB) | 220 MHz (Vout = 2 V p‑p) |
| Supply Voltage | +5 V / –5 V |
All applications need to limit the output current to less than 50 mA.
The dv/dt‑triggered clamp limits the supply turn‑on slew rate to 1 V/µs.
Pins that are not internally connected should be tied to ground to minimize crosstalk.