Maxim MAX14805/MAX14806 16-channel, high-voltage SPST switches

Maxim has introduced its third generation of 230 V switches: the MAX14805/MAX14806 16-channel, high-voltage SPST switches. Each device features two banks of eight channels controlled by two logic inputs.

Proprietary HVCMOS technology enables the devices to combine high-voltage bilateral DMOS switches and low-power CMOS logic to provide efficient control of high-voltage analog signals. Additionally, the 14806 integrates 40 kΩbleed resistors to discharge capacitive loads such as piezoelectric transducers.

These features eliminate expensive, bulky discrete circuitry on each analog switch terminal, saving cost and up to 60% board space.

With their fast turn-on/turn-off times (5 µs) and high-channel-density architecture, they are suitable for portable and console-based ultrasound devices, non-destructive testing equipment, industrial sensors and other applications that must switch high-voltage signals.

The switches support a wide range of high-voltage supplies for enhanced flexibility. They operate with VNN from -160 to 0 V and VPP from +40 to (VNN + 220 V). Both devices are fully specified over the -40 to +85°C extended temperature range and are available in an industry-standard, 7 x 7 mm, 48-pin TQFP package.