TSM921/TSM922/TSM923/TSM924: Ultra Low-Power Single/Dual-Supply Comparators

The TSM921–TSM924 family of single/dual/quad, low-voltage, micropower analog comparators is electrically and form-factor identical to the MAX921-MAX924 family of analog comparators. Ideal for 3V or 5V single-supply applications, the TSM921–TSM924 family can operate from single +2.5V to +11V supplies or from ±1.25V to ±5V dual supplies. The single TSM921 and the dual TSM922 draw less than 4μA (max) supply current over temperature. The dual TSM923 and the quad TSM924 draw less than 2.2μA per comparator over temperature.
All comparators in this family exhibit an input voltage range from the negative supply rail to within 1.3V of the positive supply. In addition, the comparators’ push-pull output stages are TTL/CMOS compatible and capable of sinking and sourcing current. The TSM921/TSM923/TSM924 each incorporates an internal 1.182V ±1% voltage reference. Without complicated feedback configurations and only requiring two additional resistors, adding external hysteresis via a separate pin is available on the single TSM921 and the dual TSM923.