General Description
The HV2601/HV2701 devices are low-charge injection,
16-channel, high-voltage analog switch integrated
circuits (ICs). These devices are designed for use in
applications requiring high-voltage switching controlled
by low-voltage control signals, such as medical
ultrasound imaging and other piezoelectric transducer
drivers. The HV2701 has integrated bleed resistors
which eliminate voltage build-up on capacitive loads,
such as piezoelectric transducers.
These ICs shift input data into a 16-bit shift register that
can then be retained in a 16-bit latch. To reduce any
possible clock feed-through noise, the latch enable bar
should be left high until all bits are clocked in. Data are
clocked in during the rising edge of the clock. Using
High-Voltage CMOS technology, these devices
combine high-voltage, bilateral DMOS switches and
low-power CMOS logic to provide efficient control of
high-voltage analog signals.
The device is suitable for various combinations of highvoltage
supplies, e.g., VPP/VNN: +40V/–160V,
+100V/–100V, and +160V/–40V.

Features
• High-Voltage CMOS Technology for High
Performance
• 16-Channel High-Voltage Analog Switch
• 3.3V Input Logic Level Compatible
• 20 MHz Data Shift Clock Frequency
• Very Low Quiescent Power Dissipation (–10 μA)
• Low Parasitic Capacitance
• DC to 50 MHz Small Signal Frequency Response
• –60 dB Typical OFF-Isolation at 5.0 MHz
• CMOS Logic Circuitry for Low Power
• Excellent Noise Immunity
• Cascadable Serial Data Register with Latches
• Flexible Operating Supply Voltages
• Integrated Bleed Resistors on the Outputs (HV2701 Only)

Applications
• Medical Ultrasound Imaging
• NDT Metal Flaw Detection
• Piezoelectric Transducer Drivers
• Optical MEMS Modules