1 Features
• Only +5 V bias supply required
– Very low power: 9.5 mW (typ) all 32CH
switching at 50 kHz
• Wide input signal range:
– Up to ±110 V, 220 VPP
– ±120 V, 240 VPP voltage overshoots supported
• Low off capacitance: 10.6 pF
• Low on resistance
• Up to 100 MHz data shift clock frequency
• Logic levels: 1.8 V to 5 V
• Integrated NDIN to invert input data polarity
• Fast turn-on time: 3 μs (maximum)
• Excellent HD2PC performance: -65 dB at 5 MHz
• Small BGA and QFN package options with
optimized pin-out
• Integrated thermal shutdown for improved system
reliability
• Integrated bleed resistors on the outputs
• Latch-up immunity by device construction
• Extended temperature range: –40°C to 125°C

2 Applications
• Medical ultrasound imaging
• Ultrasound smart probe
• Non-destructive testing (NDT) metal flaw detection
• Piezoelectric transducer drivers
• Ultrasonic flow transmitters
• Printers
• Optical MEMS modules

3 Description
The TMUX9832 is a 32-channel low harmonic
distortion, low resistance, low capacitance highvoltage
analog switch integrated circuit (IC) with
latch-up immunity. Each device has 32 independently
selectable 1:1, single-pole, single-throw (SPST)
switch channels. The device only requires a +5 V
supply, while still being able to support ±110 V analog
signals. TMUX9832 also integrates bleed resistors on
its drain (Dx) pins to discharge capacitive loads, like
piezoelectric transducers. TMUX9832 is designed for
medical ultrasound imaging and other piezoelectric
transducer driver applications.
TMUX9832 integrates cascadable 32-bit shift register
with latches for controlling each of the 32 switches.
The daisy chain capability allows for many TMUX9832
devices to be controlled without requiring a separate
chip-select for every device. To reduce noise in the
signal path due to potential clock feed-through, the
active low latch enable can be held high while data is
loaded into the shift registers. The 32-bit shift register
can operate off of a 1.8 V – 5 V power supply and
support clock speeds up to 100 MHz.