TSX393IYDT

Overview

The TSX393IYDT is a micropower dual CMOS voltage comparator manufactured by STMicroelectronics. It operates within a supply voltage range of 2.7 V to 16 V and draws a typical operating current of 11 uA per device. The component features an open-drain output type capable of sourcing 20 mA per channel. Key electrical parameters include a propagation delay of 2.4 us, an input offset voltage (Vos) of 100 uV, and an input bias current (Ib/Ios) of 10 pA. It provides a common-mode rejection ratio (CMRR) of 72 dB and a power supply rejection ratio (PSRR) of 90 dB. The device is housed in an SOIC-8 package and is qualified under AEC-Q100 standards for automotive applications.

Feature Summary

• Micropower dual CMOS architecture designed for low energy consumption
• High robustness with ESD tolerance up to 4 kV HBM
• Open-drain output configuration suitable for various logic levels
• Automotive qualification compliant with AEC-Q100 reliability standards

Applications

• Automotive sensor signal conditioning
• Overcurrent protection circuits
• General-purpose voltage monitoring
• Industrial control systems

Procurement Notes

Verify the specific suffix 'IYDT' corresponds to the industrial temperature grade (-40 C to +125 C), SOIC-8 package, and tape-and-reel packaging format. Confirm AEC-Q100 certification status if automotive compliance is required. Ensure the open-drain output requirement matches the system design, as this component lacks push-pull outputs. Cross-reference the manufacturer part number with official STMicroelectronics documentation to avoid counterfeit components.

Selection Notes

Select this component when low quiescent current is critical alongside high input impedance requirements. The 10 pA input bias current makes it suitable for high-impedance source applications. The wide supply voltage range supports both single and dual supply configurations. Consider the 2.4 us propagation delay against faster alternatives if high-speed switching is necessary. The AEC-Q100 qualification ensures suitability for harsh automotive environments.

Part Context

The TSX393IYDT belongs to the TSX393 series of micropower comparators from STMicroelectronics. This series utilizes energy-saving design technology to achieve significantly lower current consumption compared to similar legacy devices. The TSX393 family is engineered for robustness and stability, featuring high ESD protection capabilities. It serves as a cost-effective solution for battery-powered and space-constrained applications requiring reliable voltage comparison.

Replacement Considerations

Check for direct pin-compatible replacements within the TSX393 family, such as TSX393IPT (TSSOP-8 package). Verify that alternative parts maintain the same open-drain output structure and AEC-Q100 qualification if automotive use is intended. Ensure the replacement meets the 11 uA typical current consumption and 100 uV Vos specifications.