MAX4574

19-1404; Rev 1; 4/99 MAX4571–MAX4574 Serially Controlled, Clickless Audio/Video Switches General Description 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. Features o Selectable Soft Switching Mode for “Clickless” Audio Operation o 35Ω max On-Resistance o -90dB Audio Off-Isolation at 20kHz -50dB Video Off-Isolation at 10MHz o -90dB Audio Crosstalk at 20kHz -52dB Video Crosstalk at 10MHz o Serial Interface 2-Wire, Fast-Mode, I2C-Compatible (MAX4571/72) 3-Wire, SPI/QSPI/MICROWIRE-Compatible (MAX4573/74) o Single-Supply Operation from +2.7V to +5.25V Set-Top Boxes PC Multimedia Boards Applications Audio Systems Video Conferencing Systems Pin Configurations TOP VIEW MAX4571/MAX4573 NO1 1 COM1 2 NO2 3 COM2 4 NO3 5 COM3 6 NO4 7 COM4 8 NO5 9 COM5 10 NO6 11 COM6 12 NO7 13 COM7 14 28 V+ 27 SDA (DOUT) 26 SCL (DIN) 25 A1 (SCLK) 24 A0 (CS) 23 G...