Skip to the content
PCBKitNew board
LM2903D on a board, in 3D

LM2903D

Texas Instruments

-40℃~+125℃ 1.3us 100nA 1mA 2 2V~36V 2mV 36V 5nA Open Collector TTL、CMOS SOIC-8 Comparators ROHS

Extended
DatasheetJLCPCBLCSCti/LM2903D
Category
Comparators
Package
SOIC-8
Pins
8

Overview

The LM2903D is a comparator made by Texas Instruments in a SOIC-8 package with 8 pins. -40℃~+125℃ 1.3us 100nA 1mA 2 2V~36V 2mV 36V 5nA Open Collector TTL、CMOS SOIC-8 Comparators ROHS.

PCBKit's library has its KiCad symbol (Comparator:LM2903, from KiCad's library) and its footprint (Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. 90,396 are in stock at JLCPCB (part C7549).

Symbol

1-2+3
Comparator:LM2903From KiCad's library

Footprint

12345678
Package_SO:SOIC-8_3.9x4.9mm_P1.27mmFrom KiCad's library

From the datasheet

12
Supply, least
2 V · VCC, recommended operating min, non-V device · p. 4
Supply, most
30 V · VCC, recommended operating max, non-V device · p. 4
Supply, absolute maximum
36 V · VCC, absolute max, Non-B Versions · p. 4
Works from
-40 °C · Ambient temperature min, LM2903 · p. 4
Works up to
125 °C · Ambient temperature max, LM2903 · p. 4
Junction, hottest
150 °C · Operating virtual-junction temperature max · p. 4
Takes working
800 µA · Supply current typical, VCC = 5V, RL = ∞, 25°C · p. 10
Takes at most
2.5 mA · Supply current max, VCC = 30V, RL = ∞, full temperature range · p. 10
A pin gives at most
20 mA · Output current absolute max, Non-B Versions · p. 4
Junction to air (D (SOIC))
148.5 K/W · Junction-to-ambient thermal resistance · p. 5
Junction to case (D (SOIC))
90.2 K/W · Junction-to-case (top) thermal resistance · p. 5
Junction to board (D (SOIC))
91.8 K/W · Junction-to-board thermal resistance · p. 5

What it is and has

3
Comparators
2 independent voltage comparators · p. 1
Output compatibility
TTL, MOS, and CMOS · p. 1
Output saturation voltage
Low · p. 1

Specifications

45
ParameterConditionsAs printedPage
Supply VoltageLM2903min 2 · max 30 V1
Total Supply Current (5V to 36V max)LM2903min 1 · max 2.5 mA1
Temperature RangeLM2903min -40 · max 125 °C1
ESD (HBM)LM2903max 2000 V1
Offset Voltage (Max over temp)LM2903; ±15 mVmax 15 mV1
Input Bias Current (typ / max)LM2903typ 25 · max 250 nA1
Response Time (typ)LM2903typ 1.3 usec1
Supply voltage VCCNon-B Versions; maximummax 36 V4
Supply voltage VCCNon-B Versions; minimummin -0.3 V4
Differential input voltage VIDNon-B Versionsmin -36 · max 36 V4
Input voltage (either input) VINon-B Versions; maximummax 36 V4
Input voltage (either input) VINon-B Versions; minimummin -0.3 V4
Input current IIKInput current through parasitic diode to groundmax -50 mA4
Output voltage VONon-B Versions; maximummax 36 V4
Output voltage VONon-B Versions; minimummin -0.3 V4
Output current IONon-B Versionsmax 20 mA4
Operating virtual-junction temperature TJmax 150 °C4
Storage temperature Tstgmin -65 · max 150 °C4
Supply voltage, VS = (V+) – (V–) VSnon-V devices; LM2903min 2 · max 30 V4
Input voltage range, VIVR VIVRnon-B devices; upper limit (V+) – 2.0 Vmin 0 V4
Ambient temperature, TA TALM2903min -40 · max 125 °C4
Junction-to-ambient thermal resistance RθJAD (SOIC), 8 pinstyp 148.5 °C/W5
Junction-to-case (top) thermal resistance RθJC(top)D (SOIC), 8 pinstyp 90.2 °C/W5
Junction-to-board thermal resistance RθJBD (SOIC), 8 pinstyp 91.8 °C/W5
Junction-to-top characterization parameter ψJTD (SOIC), 8 pinstyp 38.5 °C/W5
Junction-to-board characterization parameter ψJBD (SOIC), 8 pinstyp 91.1 °C/W5
Electrostatic discharge V(ESD)Human body model (HBM), per ANSI/ESDA/JEDEC JS-001; ±2000 Vmax 2000 V5
Electrostatic discharge V(ESD)Charged-device model (CDM), per JEDEC specification JESD22-C101; ±1000 Vmax 1000 V5
Input offset voltage VIOLM2903; VCC = 5V to 30V, VO = 1.4V, VIC = VICR(min), TA = 25°Ctyp 2 · max 7 mV10
Input offset voltage VIOLM2903; VCC = 5V to 30V, VO = 1.4V, VIC = VICR(min), full rangemax 15 mV10
Input offset current IIOLM2903; VCC = 5V, VO = 1.4V, TA = 25°Ctyp 5 · max 50 nA10
Input offset current IIOLM2903; VCC = 5V, VO = 1.4V, full rangemax 200 nA10
Input bias current IIBLM2903; VCC = 5V, VO = 1.4V, TA = 25°Ctyp -25 · max -250 nA10
Input bias current IIBLM2903; VCC = 5V, VO = 1.4V, full rangemax -500 nA10
Common-mode input-voltage range VICRLM2903; VCC = 5V, TA = 25°C; range 0 to VCC – 1.5 Vmin 0 V10
Large-signal differential-voltage amplification AVDLM2903; VCC = 15V, VO = 1.4V to 11.4V, RL ≥ 15kΩ to VCC, TA = 25°Cmin 25 · typ 100 V/mV10
High-level output current IOHLM2903; VCC = 5V, VOH = 5V, VID = 1V, TA = 25°Ctyp 0.1 · max 50 nA10
High-level output current IOHLM2903; VOH = VCC MAX = 30V, VID = 1V, full rangemax 1 uA10
Low-level output voltage VOLLM2903; VCC = 5V, IOL = 4mA, VID = –1V, TA = 25°Ctyp 150 · max 400 mV10
Low-level output voltage VOLLM2903; VCC = 5V, IOL = 4mA, VID = –1V, full rangemax 700 mV10
Low-level output current IOLLM2903; VCC = 5V, VOL = 1.5V, VID = –1V, TA = 25°Cmin 6 mA10
Supply current ICCLM2903; RL = ∞, VCC = 5V, TA = 25°Ctyp 0.8 · max 1 mA10
Supply current ICCLM2903; RL = ∞, VCC = MAX = 30V, full rangemax 2.5 mA10
Response timeLM2903; VCC = 5V, TA = 25°C, RL connected to 5V through 5.1kΩ, CL = 15pF; 100mV input step with 5mV overdrivetyp 1.3 us10
Response timeLM2903; VCC = 5V, TA = 25°C, RL connected to 5V through 5.1kΩ, CL = 15pF; TTL-level input steptyp 0.3 us10

Pins, by the datasheet

8
1 1OUT
Output pin of comparator 1. · p. 3
2 1IN–
Negative input pin of comparator 1. · p. 3
3 1IN+
Positive input pin of comparator 1. · p. 3
4 GND
Ground. · p. 3
5 2IN+
Positive input pin of comparator 2. · p. 3
6 2IN-
Negative input pin of comparator 2. · p. 3
7 2OUT
Output pin of comparator 2. · p. 3
8 VCC
Positive Supply. · p. 3

Parameters

21
Current - Supply
800uA
Current - Supply(Max)
2.5mA
Ib - Input Bias Current
3.5nA
Input Offset Current(Ios)
5nA
Junction Temperature(Max)
150℃
Maximum Power Supply Range (Vdd-Vss)
36V
Number of Channels
2
Operating Temperature
-40℃~+125℃
Output Current per Pin(Max)
20mA
Output Mode
CMOS
Output Type
Open Collector
Propagation Delay Time
1us
Quiescent Current
1mA
Response Time (tr)
1.3us
Single Supply
2V~36V
Thermal Resistance(Junction to Ambient)
148.5℃/W
Thermal Resistance(Junction to Board)
91.8℃/W
Thermal Resistance(Junction to Case)
90.2℃/W
Voltage - Supply
2V~30V
Voltage - Supply(Absolute Max)
36V
Vos - Input Offset Voltage
370uV

Order codes

3

Pinout

8
The pins of the LM2903D
PinNameType
1—Open collector
2-Input
3+Input
4V-Power in
5+Input
6-Input
7—Open collector
8V+Power in

Show this part on your page

A live frame, for any web page
<iframe src="https://pcbkit.io/embed/parts/ti/LM2903D" title="LM2903D in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>
A picture
<img src="https://pcbkit.io/embed/parts/ti/LM2903D.jpg" alt="LM2903D" width="1200" height="900">
A picture that opens the part, for a README
[![LM2903D](https://pcbkit.io/embed/parts/ti/LM2903D.jpg?size=s)](https://pcbkit.io/parts/ti/LM2903D)

Questions

Is there a KiCad symbol and footprint for the LM2903D?

Yes. The symbol is Comparator:LM2903 and the footprint Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the LM2903D?

SOIC-8, with 8 pins. Its footprint is drawn on this page.

Where is the LM2903D datasheet?

Texas Instruments publishes it: the Datasheet link on this page opens it.

Where can I order the LM2903D?

JLCPCB lists it as part C7549, with 90,396 in stock; the sellers' links on this page open their listings.

What can replace the LM2903D?

Parts like it in the library: the LM393D by Texas Instruments, the LM293DT by STMicroelectronics, the TLV1812QDRQ1 by Texas Instruments and the LMV393TPL1-SR by 3PEAK. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

8