TS3704IPT

Overview

The TS3704IPT is a micropower quad CMOS voltage comparator manufactured by STMicroelectronics. It features an extremely low supply current of 9µA per comparator and operates within a wide single supply range of 2.7V to 16V or dual supplies of ±1.35V to ±8V. The device utilizes a push-pull CMOS output stage, eliminating the need for external pull-up resistors. Key electrical parameters include a typical response time of 2µs for a 5mV overdrive, maximum input offset voltage of 5mV at 10V, and typical input bias and offset currents of 1pA. It is housed in a 14-TSSOP package with an operating temperature range of -40°C to 125°C.

Feature Summary

• Push-pull CMOS output stage eliminates the requirement for external pull-up resistors typically needed with open-collector comparators.
• Extremely low power consumption with a typical supply current of 9µA per comparator, significantly lower than bipolar equivalents.
• High input impedance of 10^12 Ω typical, supporting precise signal detection in high-impedance circuits.
• Input common-mode voltage range includes ground, allowing direct interfacing with ground-referenced signals.

Applications

• Battery-powered portable devices requiring ultra-low quiescent current.
• Threshold detection circuits in microprocessor systems.
• Window comparator configurations for voltage monitoring.
• Signal conditioning in sensor interfaces.

Procurement Notes

Verify the specific suffix 'IPT' corresponds to the 14-TSSOP surface-mount package when sourcing. Confirm RoHS compliance status as specified in the latest manufacturer documentation. Ensure the ordering quantity aligns with standard tape-and-reel packaging requirements defined by the supplier. Cross-reference the manufacturer part number with distributor codes to avoid variant mismatches.

Selection Notes

Select this component when low power consumption is critical alongside the convenience of push-pull outputs. It serves as a pin-to-pin compatible alternative to bipolar LM339 devices, offering similar response times but with reduced static current. Consider the 14-TSSOP package constraints for PCB layout. Verify that the 2.7V minimum supply voltage meets the system's operational requirements.

Part Context

The TS3704 belongs to STMicroelectronics' family of micropower CMOS voltage comparators. It shares functional similarities with the TS339 but distinguishes itself through its push-pull output capability. This design choice simplifies circuit architecture by removing external components while maintaining performance levels comparable to traditional bipolar comparators like the LM339.

Replacement Considerations

The TS3704 is functionally and pin-compatible with the bipolar LM339. Designers replacing LM339 units can utilize the TS3704 to reduce power consumption without altering the board layout or adding pull-up resistors.