LMC7221 - Tiny CMOS Comparator with Rail-to-Rail Input and Open Drain Output

The LM7221 is a micropower CMOS comparator available in the space saving 5-Pin SOT-23 package. This makes this comparator ideal for space and weight critical designs. The LMC7221 is also available in the 8-Pin SOIC package. The LMC7221 is supplied in two offset voltage grades, 5 mV and 15 mV.

The open drain output can be pulled up with a resistor to a voltage which can be higher or lower than the supply voltage—this makes the part useful for mixed voltage systems.

For a tiny comparator with a push-pull output, please see the LMC7211 datasheet.

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• Tiny 5-Pin SOT-23 package saves space
• Package is less than 1.43 mm thick
• Ensured specs at 2.7V, 5V, 15V supplies
• Typical supply current 7 μA at 5V
• Response time of 4 μs at 5V
• LMC7221—open drain output
• Input common-mode range beyond V⁻ and V⁺
• Low input current

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