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LMC7221

ACTIVE

Low power, high voltage comparator with open-drain output

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Data sheet

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TLV1821 ACTIVE Single-channel micropower high-voltage comparator with open-drain output Improved performance: wider supply voltage, lower offset voltage and faster speed

LMC7221

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Output type Open-collector, Open-drain Propagation delay time (µs) 4 Vs (max) (V) 15 Vs (min) (V) 2.7 Rating Catalog Iq per channel (typ) (mA) 0.007 Vos (offset voltage at 25°C) (max) (mV) 5 Rail-to-rail In Operating temperature range (°C) -40 to 85 Input bias current (±) (max) (nA) 0.0004 VICR (max) (V) 15.2 VICR (min) (V) -0.2
Number of channels 1 Output type Open-collector, Open-drain Propagation delay time (µs) 4 Vs (max) (V) 15 Vs (min) (V) 2.7 Rating Catalog Iq per channel (typ) (mA) 0.007 Vos (offset voltage at 25°C) (max) (mV) 5 Rail-to-rail In Operating temperature range (°C) -40 to 85 Input bias current (±) (max) (nA) 0.0004 VICR (max) (V) 15.2 VICR (min) (V) -0.2
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm) SOT-23 (DBV) 5 8.12 mm² (2.9 mm × 2.8 mm)
  • Tiny 5-Pin SOT-23 package saves space
  • Package is less than 1.43mm thick
  • Ensured specs at 2.7V, 5V, 15V supplies
  • Typical supply current 7µA at 5V
  • Response time of 420ns at 5V
  • LMC7221—open drain output
  • Input common-mode range beyond V− and V+
  • Low input current
  • Tiny 5-Pin SOT-23 package saves space
  • Package is less than 1.43mm thick
  • Ensured specs at 2.7V, 5V, 15V supplies
  • Typical supply current 7µA at 5V
  • Response time of 420ns at 5V
  • LMC7221—open drain output
  • Input common-mode range beyond V− and V+
  • Low input current

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, 5mV and 15mV.

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 data sheet.

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, 5mV and 15mV.

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 data sheet.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet LMC7221 Tiny CMOS Comparator with Rail-To-Rail Input and Open Drain Output datasheet (Rev. F) PDF | HTML Dec 5, 2025
E-book The Signal e-book: A compendium of blog posts on op amp design topics PDF | HTML Mar 28, 2017

Design & development

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Evaluation board

AMP-PDK-EVM — Amplifier performance development kit evaluation module

The amplifier performance development kit (PDK) is an evaluation module (EVM) kit to test common operational amplifier (op amp) parameters and is compatible with most op amps and comparators. The EVM kit offers a main board with several socketed daughtercard options to fit package needs, allowing (...)

User guide: PDF | HTML
Supported products & hardware
Simulation model

LMC7221 PSPICE Model

SNOM145.ZIP (4 KB) - PSpice model
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
SOIC (D) 8 Ultra Librarian
SOT-23 (DBV) 5 Ultra Librarian
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