TSX393IPT

Overview

The TSX393IPT is a micropower dual CMOS voltage comparator manufactured by STMicroelectronics. It features an open-drain output and operates within a wide single supply range of 2.7 V to 16 V, or dual supplies from ±1.35 V to ±8 V. The device exhibits a typical supply current of 5 µA per comparator and an extremely low input bias current of 1 pA typ. Key electrical parameters include a maximum input offset voltage of 5 mV, a typical response time of 2 µs for 5 mV overdrive, and a common-mode rejection ratio (CMRR) of 90 dB. It supports a maximum output current of 20 mA per channel and functions reliably across a temperature range of -40°C to +125°C.

Feature Summary

• Micropower design with extremely low typical supply current of 5 µA per comparator
• High input impedance with extremely low input bias current of 1 pA typ
• Wide operating supply voltage range supporting both single and dual power sources
• Robust electrostatic discharge tolerance rated at 4 kV HBM

Applications

• General-purpose analog signal comparison circuits
• Battery-powered systems requiring low quiescent current
• Industrial sensor interface applications
• Automotive grade electronic control units

Procurement Notes

Verify the specific ordering suffix to confirm package type and reel specifications. Confirm RoHS compliance status and moisture sensitivity level prior to integration. Ensure the selected variant matches the required industrial or automotive qualification standards. Cross-reference the manufacturer part number with distributor codes to avoid packaging discrepancies during procurement.

Selection Notes

Select this component when low power consumption and high input impedance are critical requirements. The open-drain output necessitates an external pull-up resistor for proper logic level translation. Consider the 2 µs propagation delay for timing-sensitive applications. Verify that the 5 mV maximum input offset voltage meets the precision requirements of the target circuit design.

Part Context

The TSX393 series represents an improvement over the legacy TS393 CMOS comparator, offering reduced current consumption and enhanced ESD tolerance. It is fully compatible with the TS393 in terms of functionality while providing better performance metrics. The device is available in multiple packages including TSSOP-8, SOIC-8, MiniSO8, and DFN8 to suit various space constraints.

Replacement Considerations

The TS393 is the direct predecessor and functional equivalent. For automotive applications, verify if AEC-Q100 qualification is required, as the IYDT variant explicitly holds this certification.