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Ovaga Certification

Brands: STMicroelectronics, Inc

Mfr.Part #: STHV748SQ

Datasheet: STHV748SQ Datasheet (PDF)

Package/Case: VFQFPN 64 9x9x1.0 mm

RoHS Status:

Stock Condition: 2925 pcs, New Original

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Please submit RFQ for STHV748SQ or email to us: Email: [email protected], we will contact you within 12 hours.

STHV748SQ General Description

This monolithic, high-voltage, high-speed pulser generator features four independent channels. It is designed for medical ultrasound imaging applications, but can also be used to drive piezoelectric, capacitive or MEMS based transducers.The STHV748S is composed of a controller logic interface circuit, level translators, MOSFET gate drivers, noise blocking diodes, and high-power P-channel and N-channel MOSFETs as the output stage for each channel. It also includes clamping-to-ground circuitry, anti-leakage, anti-memory effect block, thermal sensor, and a T/R switch which guarantees effective decoupling during the transmission phase. The STHV748S also includes self-biasing and thermal shutdown blocks.Each channel can support up to five active output levels with two half bridges. The output stage of each channel is able to provide ±2 A peak output current. In order to reduce power dissipation during continuous wave mode, a dedicated half-bridge is available and the peak current is limited to 0.6 A.An ESD reinforced structure was developed to prevent high voltage overshoots and inrush current due to cabled transducer reflections. Each HV output is supported by a dedicate HV diode network to withstand possible reflections, mitigating excessive voltage overshoot that could lead to device damage.


  • Pinout compatibility with STHV748
  • Recirculation current protection
  • 0 to ±90 V output voltage
  • Up to 20 MHz operating frequency
  • Embedded low-power, floating high-voltage drivers (external voltage rails can bealso used)
  • Mode operations:
    • 3/5-level output waveform
    • ±2 A source and sink current
    • Down to ≤ 20 ps jitter
    • Anti-cross conduction function
    • Low 2nd harmonic distortion
  • Fully integrated clamping-to-ground function
    • 8 Ω synchronous active clamp
    • Anti-leakage on output node
  • Dedicated half bridge for continuous wave (CW) operations
    • ≤ 0.1 W power consumption
    • ±0.6 A source and sink current
    • 205 fs RMS jitter [100 Hz-20 kHz]
  • Fully integrated T/R switch
    • 13.5 Ω on-resistance
    • HV MOS topology to minimize current consumption
    • Up to 300 MHz BW
    • Receiver multiplexing function
  • 1.8 V to 3.6 V CMOS logic interface
    • New digital input compatibility @ 1.8 V
  • Auxiliary integrated circuits
    • Noise blocking diodes
    • Fully self-biasing architecture
    • Anti-memory effect for all internal HV nodes
    • Thermal protection
    • Standby function
    • Reinforced diodes on HV outputs for protection by recirculationcurrent
  • Latch-up free due to HV SOI technology
  • Very few external passive components needed


Parameter Value Parameter Value
feature-display-resolution-pixels feature-category Ultrasound Pulser
feature-data-rate-gbps feature-input-type
feature-output-type feature-packaging Tray
feature-rad-hard feature-pin-count 64
feature-supplier-package VFQFPN feature-standard-package-name1 QFN
feature-cecc-qualified feature-esd-protection
feature-military No feature-aec-qualified No
feature-auto-motive No feature-p-pap No
feature-eccn-code EAR99 feature-svhc No
feature-svhc-exceeds-threshold No


Shipping Type Ship Fee Lead Time
DHL DHL $20.00-$40.00 (0.50 KG) 2-5 days
Fedex Fedex $20.00-$40.00 (0.50 KG) 2-5 days
UPS UPS $20.00-$40.00 (0.50 KG) 2-5 days
TNT TNT $20.00-$40.00 (0.50 KG) 2-5 days
EMS EMS $20.00-$40.00 (0.50 KG) 2-5 days
REGISTERED AIR MAIL REGISTERED AIR MAIL $20.00-$40.00 (0.50 KG) 2-5 days

Processing Time:Shipping fee depend on different zone and country.


Terms of payment Hand Fee
Wire Transfer Wire Transfer charge US$30.00 banking fee.
Paypal Paypal charge 4.0% service fee.
Credit Card Credit Card charge 3.5% service fee.
Western Union Western Union charge US$0.00 banking fee.
Money Gram Money Gram charge US$0.00 banking fee.


1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


  • Product

    Step1 :Product

  • Vacuum packaging

    Step2 :Vacuum packaging

  • Anti-static bag

    Step3 :Anti-static bag

  • Individual packaging

    Step4 :Individual packaging

  • Packaging boxes

    Step5 :Packaging boxes

  • bar-code shipping tag

    Step6 :bar-code shipping tag

All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

  • ESD
  • ESD

Key points

  • The STHV748SQ chip is a high-voltage switch matrix device designed for use in automotive applications. It offers high voltage capability, low leakage current, and a wide range of programmable features. This chip is commonly used in automotive electronics for control and routing of high voltage signals, such as in battery management systems, power distribution units, and electric vehicle charging systems.
  • Equivalent

    There are no directly equivalent products to the STHV748SQ chip. However, similar products in the same functionality range include ADF4159, AD9850, or AD9851.
  • Features

    The STHV748SQ is a high-voltage, high-speed, 32-channel, serial-to-parallel converter IC. It features a high-speed mode up to 100 Mbps, low-power mode down to 1 Mbps, adjustable HV outputs, and a high-voltage input shift register. It is designed for ultrasound applications, offering efficient communication and control of transducers.
  • Pinout

    The STHV748SQ, a high-voltage switch, has a pin count of 80. It is designed to control 16 channels of high-voltage outputs, with features like fast switching time and programmable rise and fall times.
  • Application Field

    The STHV748SQ is a voltage generator designed for piezoelectric actuators in automotive applications. It is mainly used in noise cancellation systems, active vibration control, and haptic feedback applications.
  • Package

    The STHV748SQ chip is packaged in a QFN (Quad Flat No-leads) form. The size of the chip is 7mm x 7mm.

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