HV238 is a 220V, 16-channel, high voltage analog switch integrated circuit (IC) with output bleed resistors (RINT). The output switches are configured as 2 sets of 8 single pole single throw analog switches. It is intended to be used in applications requiring high voltage switching controlled by low voltage control signals such as ultrasound imaging.The 2 sets of 8 analog switches are controlled by 2 input logic controls, DIN1 and DIN2. A logic high on DIN1 will turn on switches 0 to 7 and a logic high on DIN2 will turn on switches 8 to 15. The bleed resistors help to significantly reduce voltage built up on capacitive loads such as piezoelectric transducers connected to the outputs.

  HVCMOS? technology for high performance

  220V operating conditions

  Output on-resistance typically 22Ω

  Integrated bleed resistors on the outputs

  5.0 and 12.0V CMOS logic compatibility

  Very low quiescent power dissipation (-10μA)

  -45dB min off isolation at 7.5MHz

  Low parasitic capacitance

  Excellent noise immunity

  Flexible operating supply voltages