Home Amplifiers Comparators
Home
Amplifiers
Comparators

LMC7221

ACTIVE

Low power, high voltage comparator with open-drain output

Order now
Data sheet

A newer version of this product is available

open-in-new Compare alternates
Drop-in replacement with upgraded functionality to the compared device
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 x 6 SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • 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

All trademarks are the property of their respective owners.

  • 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

All trademarks are the property of their respective owners.

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.

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.
filter Find other Comparators
Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 2
Type Title Date
* Data sheet LMC7221 Tiny CMOS Comparator with Rail-To-Rail Input and Open Drain Output datasheet (Rev. E) 26 Mar 2013
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

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
View Options
Simulation model

LMC7221 PSPICE Model

SNOM145.ZIP (4 KB) - PSpice Model
Download
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Request
Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
User guide: PDF
View Options
Package Pins CAD symbols, footprints & 3D models
SOIC (D) 8 Ultra Librarian
SOT-23 (DBV) 5 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos