Serially Controlled, Clickless Audio/Video Switches

The MAX4571–MAX4574 serial-interface controlled switches are ideal for multimedia applications. Each device features 35Ω max on-resistance, -90dB audio off-isolation at 20kHz, -60dB video off-isolation at 1.0MHz, and "clickless" mode operation for audio applications.

The MAX4571/MAX4573 contain eleven SPST switches, while the MAX4572/MAX4574 contain two SPST switches and six SPDT switches. The MAX4571/MAX4572 feature a 2-wire, I2C-compatible serial interface. The MAX4573/MAX4574 feature a 3-wire, SPI™/QSPI™/MICROWIRE™-compatible serial interface. All four parts are available in 28-pin QSOP, SSOP, and wide SO packages and operate over the commercial and extended temperature ranges.

Applications

* Audio Systems * PC Multimedia Boards * Set-Top Boxes * Video Conferencing Systems

* Selectable Soft Switching Mode for "Clickless" Audio Operation

* 35Ω max On-Resistance

* -90dB Audio Off-Isolation at 20kHz

* -50dB Video Off-Isolation at 10MHz

* -90dB Audio Crosstalk at 20kHz

* -52dB Video Crosstalk at 10MHz

* Serial Interface

* 2-Wire, Fast-Mode, I²C-Compatible (MAX4571/72)

* 3-Wire, SPI/QSPI/MICROWIRE-Compatible (MAX4573/74)

* Single-Supply Operation from +2.7V to +5.25V