TSM972CSA+T

Overview

The TSM972CSA+T is a dual analog comparator from Silicon Labs, part of the TSM97x/98x family. It operates on single supplies from +2.5V to +11V or dual supplies from ±1.25V to ±5.5V. The device features ultra-low quiescent current of 4μA (max) over temperature and open-drain outputs suitable for wired-OR configurations. It provides an input common-mode voltage range extending to the negative supply rail and exhibits a propagation delay of 12μs at 10mV overdrive. The component is housed in an 8-pin SOIC package.

Feature Summary

• Dual comparators with open-drain output stages enabling wired-OR logic applications
• Ultra-low power consumption with maximum 4μA supply current across operating temperatures
• Wide input common-mode voltage range including the negative supply rail
• Compatible with both single and dual power supply architectures

Applications

• Threshold detectors
• Window comparators
• Level translators
• Oscillator circuits
• Battery-powered systems

Procurement Notes

Verify the specific suffix 'CSA+T' against official documentation to confirm the commercial temperature range and tape-and-reel packaging format. Confirm that the device is sourced as a second-source equivalent to the MAX972 family. Ensure compatibility with existing PCB footprints for the 8-pin SOIC package before finalizing procurement plans.

Selection Notes

Select this component when dual independent comparison is required within a low-power budget. The open-drain outputs facilitate interfacing with various logic families through external pull-up resistors. Verify that the application does not require internal hysteresis generation, as this variant lacks dedicated hysteresis pins compared to other members of the family.

Part Context

This device belongs to the TSM971/972/973/82/84 family of micropower analog comparators manufactured by Silicon Labs. These components are electrically and form-factor identical to the Maxim Integrated MAX971/MAX972/MAX973/MAX982/MAX984 series. The family offers single, dual, and quad configurations with varying reference and hysteresis capabilities.

Replacement Considerations

Public confirmed substitute part numbers include MAX972.