LM2903

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Dual differential comparator

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Data sheet

document-pdfAcrobat LM393B, LM2903B, LM193, LM293, LM393 and LM2903 Dual Comparators datasheet (Rev. AH) PDF | HTML

LM2903

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Data sheet

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Product details

Number of channels

2

Output type

Open-collector, Open-drain

Propagation delay time (µs)

1.3

Vs (max) (V)

30

Vs (min) (V)

2

Rating

Automotive, Catalog

Iq per channel (typ) (mA)

0.4

Vos (offset voltage at 25°C) (max) (mV)

7

Rail-to-rail

In to V-

Operating temperature range (°C)

-40 to 125

Input bias current (±) (max) (nA)

50

VICR (max) (V)

28.5

VICR (min) (V)

0

Number of channels

2

Output type

Open-collector, Open-drain

Propagation delay time (µs)

1.3

Vs (max) (V)

30

Vs (min) (V)

2

Rating

Automotive, Catalog

Iq per channel (typ) (mA)

0.4

Vos (offset voltage at 25°C) (max) (mV)

7

Rail-to-rail

In to V-

Operating temperature range (°C)

-40 to 125

Input bias current (±) (max) (nA)

50

VICR (max) (V)

28.5

VICR (min) (V)

0

SOIC (D)

8

29.4 mm² (4.9 mm × 6 mm)

SOP (PS)

8

48.36 mm² (6.2 mm × 7.8 mm)

TSSOP (PW)

8

19.2 mm² (3 mm × 6.4 mm)

VSSOP (DGK)

8

14.7 mm² (3 mm × 4.9 mm)

PDIP (P)

8

92.5083 mm² (9.81 mm × 9.43 mm)

NEW LM393B and LM2903B
Improved specifications of B-version
- Maximum rating: up to 38V
- ESD rating (HBM): 2kV
- Low input offset: 0.37mV
- Low input bias current: 3.5nA
- Low supply-current: 200µA per comparator
- Faster response time of 1µsec
- Extended temperature range for LM393B
- Available in tiny 2 x 2mm WSON package
B-version is drop-in replacement for LM293, LM393 and LM2903, A and V versions
Common-mode input voltage range includes ground
Differential input voltage range equal to maximum-rated supply voltage: ±38 V
Low output saturation voltage
Output compatible with TTL, MOS, and CMOS

NEW LM393B and LM2903B
Improved specifications of B-version
- Maximum rating: up to 38V
- ESD rating (HBM): 2kV
- Low input offset: 0.37mV
- Low input bias current: 3.5nA
- Low supply-current: 200µA per comparator
- Faster response time of 1µsec
- Extended temperature range for LM393B
- Available in tiny 2 x 2mm WSON package
B-version is drop-in replacement for LM293, LM393 and LM2903, A and V versions
Common-mode input voltage range includes ground
Differential input voltage range equal to maximum-rated supply voltage: ±38 V
Low output saturation voltage
Output compatible with TTL, MOS, and CMOS

The LM393B and LM2903B devices are the next generation versions of the industry-standard LM393 and LM2903 comparator family. These next generation B-version comparators feature lower offset voltage, higher supply voltage capability, lower supply current, lower input bias current, lower propagation delay, and improved 2 kV ESD performance and input ruggedness through dedicated ESD clamps. The LM393B and LM2903B can drop-in replace the LM293, LM393 and LM2903, for both "A" and "V" grades.

All devices consist of two independent voltage comparators that are designed to operate from a single power supply over a wide range of voltages. Quiescent current is independent of the supply voltage.

The LM393B and LM2903B devices are the next generation versions of the industry-standard LM393 and LM2903 comparator family. These next generation B-version comparators feature lower offset voltage, higher supply voltage capability, lower supply current, lower input bias current, lower propagation delay, and improved 2 kV ESD performance and input ruggedness through dedicated ESD clamps. The LM393B and LM2903B can drop-in replace the LM293, LM393 and LM2903, for both "A" and "V" grades.

All devices consist of two independent voltage comparators that are designed to operate from a single power supply over a wide range of voltages. Quiescent current is independent of the supply voltage.

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Technical documentation

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Top documentation	Type	Title	Format options	Date
*	Data sheet	LM393B, LM2903B, LM193, LM293, LM393 and LM2903 Dual Comparators datasheet (Rev. AH)	PDF \| HTML	Apr 30, 2025
	Application note	Application Design Guidelines for LM339, LM393, TL331 Family Comparators Including the New B-versions (Rev. F)	PDF \| HTML	Dec 12, 2024
	Technical article	Solving top comparator challenges: Chatter	PDF \| HTML	Oct 29, 2021
	Application brief	How to Implement Comparators for Improving Performance of Rotary Encoders in Ind		Jul 3, 2019
	E-book	The Signal e-book: A compendium of blog posts on op amp design topics	PDF \| HTML	Mar 28, 2017
	Application note	Designing Overcurrent protection for TPL7407L Peripheral Driver		Nov 5, 2014

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

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Simulation model