The MAX4571~MAX4574 series chips are ideal audio video multimedia switches
The MAX4571–MAX4574 series are serial‑interface controlled audio/video switches designed for multimedia applications. They offer clickless soft‑mode operation for audio and hard‑mode for faster response, with independent control of each switch via I²C or SPI/QSPI/MICROWIRE interfaces.
Key features include 35 Ω max on‑resistance, -90 dB audio off‑isolation at 20 kHz, -50 dB video off‑isolation at 10 MHz, supply voltage from +2.7 V to +5.25 V, and operation over a wide temperature range. The devices are offered in 28‑pin QSOP, SSOP, and wide‑SO packages and support both 2‑wire and 3‑wire serial interfaces.
| On‑Resistance (max) | 35 Ω |
|---|---|
| Audio Off‑Isolation (20 kHz) | -90 dB |
| Video Off‑Isolation (10 MHz) | -50 dB |
| Supply Voltage Range | +2.7 V to +5.25 V |
| Package Options | 28‑pin QSOP, SSOP, Wide SO |
The devices operate from a single supply of +2.7 V to +5.25 V.
The MAX4571 (and MAX4573) contain eleven SPST switches.
Audio off‑isolation is -90 dB at 20 kHz.