Home Amplifiers Comparators
Home
Amplifiers
Comparators
NEW

LM2903L-Q1

PREVIEW

Dual comparator with open-drain output and self-latch

Order now
Data sheet

LM2903L-Q1

PREVIEW
Data sheet Order now

Product details

Number of channels 2 Output type Open-collector, Open-drain Propagation delay time (µs) 0.3 Vs (max) (V) 36 Vs (min) (V) 2.7 Rating Automotive Features Fail-safe, Latch Iq per channel (typ) (mA) 0.25 Vos (offset voltage at 25°C) (max) (mV) 2.5 Rail-to-rail In to V- Operating temperature range (°C) -40 to 125 Input bias current (±) (max) (nA) 50 VICR (max) (V) 34 VICR (min) (V) 0 TI functional safety category Functional Safety-Capable
Number of channels 2 Output type Open-collector, Open-drain Propagation delay time (µs) 0.3 Vs (max) (V) 36 Vs (min) (V) 2.7 Rating Automotive Features Fail-safe, Latch Iq per channel (typ) (mA) 0.25 Vos (offset voltage at 25°C) (max) (mV) 2.5 Rail-to-rail In to V- Operating temperature range (°C) -40 to 125 Input bias current (±) (max) (nA) 50 VICR (max) (V) 34 VICR (min) (V) 0 TI functional safety category Functional Safety-Capable
X2QFN (RUG) 10 3 mm² 1.5 x 2
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to 125°C ambient operating temperature range
  • Output Latches on High to Low Output Transition
  • Level-triggered clear
  • Transparent Mode
  • Independent latches per channel
  • 2.7V to 36V supply range
  • Offset Voltage: 2.5mV max at 25°C
  • Fault-tolerant inputs
  • 300ns typical propagation delay
  • Low quiescent current: 350µA per channel
  • Open-drain outputs
  • CLR input compatable down to 1.2V logic
  • Functional Safety-Capable
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to 125°C ambient operating temperature range
  • Output Latches on High to Low Output Transition
  • Level-triggered clear
  • Transparent Mode
  • Independent latches per channel
  • 2.7V to 36V supply range
  • Offset Voltage: 2.5mV max at 25°C
  • Fault-tolerant inputs
  • 300ns typical propagation delay
  • Low quiescent current: 350µA per channel
  • Open-drain outputs
  • CLR input compatable down to 1.2V logic
  • Functional Safety-Capable

The TL331L-Q1 (single) and LM2903L-Q1 (dual) are high voltage self-latching comparators with a open-collector output. The family also offers low input offset voltage and fault-tolerant inputs. These devices have an excellent speed-to-power combination with a propagation delay of 300ns with a quiescent supply current of only 300µA per channel.

The unique feature of the family is the output latching capability. The output latches upon the first high-to-low threshold crossing, allowing capture of an event or error condition without the full attention of a system controller. This allows events to be captured at start up while the system controller is still initializing or busy with other tasks. When the Latch input is held low, the "Transparent" mode is entered and the output continues to reflect the input conditions (latching disabled).

These comparators also feature fault-tolerant inputs that can go up to 36V without damage with no output phase inversion. This makes this family of comparators designed for precision voltage monitoring in harsh, noisy environments.

The open-drain outputs can be pulled-up below or beyond the supply voltage for OR’ing multiple outputs or level translation.

The family is specified for the Automotive temperature range of -40°C to +125°C and are available in standard leaded and leadless packages.

The TL331L-Q1 (single) and LM2903L-Q1 (dual) are high voltage self-latching comparators with a open-collector output. The family also offers low input offset voltage and fault-tolerant inputs. These devices have an excellent speed-to-power combination with a propagation delay of 300ns with a quiescent supply current of only 300µA per channel.

The unique feature of the family is the output latching capability. The output latches upon the first high-to-low threshold crossing, allowing capture of an event or error condition without the full attention of a system controller. This allows events to be captured at start up while the system controller is still initializing or busy with other tasks. When the Latch input is held low, the "Transparent" mode is entered and the output continues to reflect the input conditions (latching disabled).

These comparators also feature fault-tolerant inputs that can go up to 36V without damage with no output phase inversion. This makes this family of comparators designed for precision voltage monitoring in harsh, noisy environments.

The open-drain outputs can be pulled-up below or beyond the supply voltage for OR’ing multiple outputs or level translation.

The family is specified for the Automotive temperature range of -40°C to +125°C and are available in standard leaded and leadless packages.
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 1
Top documentation Type Title Format options Date
* Data sheet TL331L-Q1 and LM2903L-Q1 Automotive Open-Drain High Voltage Self-Latching Comparators datasheet PDF | HTML 14 Jul 2026

Design & development

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

Evaluation board

SMALL-AMP-DIP-EVM — Evaluation module for operational amplifiers with small-size packages

The SMALL-AMP-DIP-EVM speeds up small-package operational-amplifier prototyping by providing a fast and easy way to interface with many industry-standard small-size packages. SMALL-AMP-DIP-EVM supports eight small package options including DPW-5 (X2SON), DSG-8 (WSON), DCN-8 (SOT), DDF-8 (...)

User guide: PDF
Not available on TI.com
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
X2QFN (RUG) 10 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

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