STHV64SW

Overview

The STHV64SW is a high-voltage analog switch matrix featuring 64 independent channels in a BGA-196 package. It supports ±3 A peak output current and operates with three voltage ranges: -100 V to +100 V, 0 V to 200 V, or -200 V to 0 V. The device handles 200 V peak-to-peak signals with a 40 V/ns slew rate using only a +3.3 V supply. Internal architecture includes self-biased gate drivers, N-channel MOSFETs, 42 kΩ bleed resistors, thermal sensors, and undervoltage lockout for protection.

Feature Summary

• 64 independent switches with ±3 A peak current capability
• Three selectable operating ranges: ±100 V, 0–200 V, or -200–0 V
• Serial control via shift register with 20 MHz clock frequency
• Integrated thermal shutdown and undervoltage lockout

Applications

• Medical ultrasound imaging systems
• NDT (Non-Destructive Testing) ultrasound transmission
• Piezoelectric, capacitive, or MEMS transducer drivers
• Industrial generic high voltage switching

Procurement Notes

Verify the latest datasheet revision before design finalization, as ST reserves the right to modify product specifications without notice. Confirm that the BGA-196 package and tray packing align with manufacturing capabilities. Ensure compliance with humidity sensitivity requirements during storage and assembly processes.

Selection Notes

Select this component when driving piezoelectric or capacitive loads requiring high voltage isolation and fast switching speeds. The single +3.3 V supply simplifies logic interfacing. Verify that the 42 kΩ internal bleed resistor meets discharge time requirements for specific application safety standards.

Part Context

This part belongs to STMicroelectronics' specialized analog custom products line. It is distinct from standard operational amplifiers, serving specifically as a high-density switch matrix for high-voltage signal routing in transducer applications.

Replacement Considerations

No direct public substitute part numbers are documented for the STHV64SW. Designers should evaluate the STHVUP64 for pulser applications, though functional differences exist between switch matrices and pulsers.