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Amplifier Circuits / Comparators / LM2903WDT
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LM2903WDT by:

Low power dual voltage comparator

Part Details for LM2903WDT by STMicroelectronics

Results Overview of LM2903WDT by STMicroelectronics

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LM2903WDT Information

LM2903WDT by STMicroelectronics is a Comparator.
Comparators are under the broader part category of Amplifier Circuits.

Amplifier circuits use external power to increase the amplitude of an input signal. They can be used to perform linear amplifications or logarithmic functions. Read more about Amplifier Circuits on our Amplifier Circuits part category page.

Price & Stock for LM2903WDT

Part # Distributor Description Stock Price Buy
DISTI # 79AH3611
Newark Conditioning & Interfaces Rohs Compliant: Yes |Stmicroelectronics LM2903WDT RoHS: Compliant Min Qty: 2500 Package Multiple: 1 Date Code: 0 Container: Reel 30000
  • 1 $0.0990
$0.0990 Buy Now
DISTI # 47AK6615
Newark Comparator, Soic-8, -40 To 125Deg C Rohs Compliant: Yes |Stmicroelectronics LM2903WDT RoHS: Compliant Min Qty: 5 Package Multiple: 1 Date Code: 1 Container: Cut Tape 320
  • 1 $0.1810
$0.1810 Buy Now
DISTI # 497-LM2903WDTCT-ND
DigiKey IC COMPARATOR 2 DIFF 8SOIC Min Qty: 1 Lead time: 8 Weeks Container: Digi-Reel®, Tape & Reel (TR), Cut Tape (CT) 24049
In Stock
  • 1 $0.3400
  • 10 $0.2320
  • 25 $0.2064
  • 100 $0.1777
  • 250 $0.1641
  • 500 $0.1559
  • 1,000 $0.1492
  • 2,500 $0.1420
  • 5,000 $0.1377
  • 7,500 $0.1356
  • 12,500 $0.1332
  • 17,500 $0.1318
  • 25,000 $0.1305
  • 62,500 $0.1276
$0.1276 / $0.3400 Buy Now
DISTI # LM2903WDT
Avnet Americas Analogue Comparator, Low Power, 2 Channels, 1.3 ?s, 2V to 36V, ?1V to ?18V, SOIC, 8 Pins - Tape and Reel (Alt: LM2903WDT) RoHS: Compliant Min Qty: 2500 Package Multiple: 2500 Lead time: 8 Weeks, 0 Days Container: Reel 30000
  • 2,500 $0.0989
$0.0989 Buy Now
DISTI # 511-LM2903WDT
Mouser Electronics Analog Comparators 0.4mA Low Power 25nA 250mV Comp RoHS: Compliant 0
  • 2,500 $0.1220
  • 7,500 $0.1220
  • 10,000 $0.1200
  • 20,000 $0.1190
$0.1190 / $0.1220 Order Now
DISTI # V36:1790_06548468
Arrow Electronics Comparator Dual ±18V/36V 8-Pin SO N T/R RoHS: Compliant Min Qty: 7500 Package Multiple: 2500 Lead time: 8 Weeks Date Code: 2447 Americas - 30000
  • 7,500 $0.1087
  • 10,000 $0.1067
  • 12,500 $0.1051
  • 17,500 $0.1037
  • 20,000 $0.1024
  • 25,000 $0.1008
$0.1008 / $0.1087 Buy Now
Future Electronics LM2903 Series Dual 36 V 250 nA SMT Low Power Voltage Comparator - SOIC-8 RoHS: Compliant pbFree: Yes Min Qty: 2500 Package Multiple: 2500 Lead time: 8 Weeks Container: Reel 22500
Reel
  • 2,500 $0.1070
  • 5,000 $0.1060
  • 10,000 $0.1040
  • 37,500 $0.1020
$0.1020 / $0.1070 Buy Now
Future Electronics LM2903 Series Dual 36 V 250 nA SMT Low Power Voltage Comparator - SOIC-8 RoHS: Compliant pbFree: Yes Min Qty: 2500 Package Multiple: 2500 Lead time: 8 Weeks Container: Reel 0
Reel
  • 2,500 $0.1070
  • 5,000 $0.1060
  • 10,000 $0.1040
  • 37,500 $0.1020
$0.1020 / $0.1070 Buy Now
DISTI # 76844145
Verical Comparator Dual ±18V/36V 8-Pin SO N T/R RoHS: Compliant Min Qty: 119 Package Multiple: 1 Americas - 4945
  • 119 $0.2450
  • 500 $0.2340
  • 1,000 $0.2290
$0.2290 / $0.2450 Buy Now
Rochester Electronics LM2903WDT - Low Power Dual Voltage Comparator RoHS: Compliant Status: Active Min Qty: 1 2494
  • 100 $0.1200
  • 500 $0.1080
  • 1,000 $0.0996
  • 10,000 $0.0888
  • 100,000 $0.0744
$0.0744 / $0.1200 Buy Now
Future Electronics LM2903 Series Dual 36 V 250 nA SMT Low Power Voltage Comparator - SOIC-8 Min Qty: 2500 Package Multiple: 2500 27500
null
  • 2,500 $0.1070
  • 5,000 $0.1060
  • 10,000 $0.1040
  • 37,500 $0.1020
$0.1020 / $0.1070 Buy Now
DISTI # LM2903WDT
IBS Electronics LM2903 SERIES DUAL 36 V 250 NA SMT LOW POWER VOLTAGE COMPARATOR - SOIC-8 Min Qty: 2500 Package Multiple: 1 27500
  • 2,500 $0.1391
  • 5,000 $0.1378
  • 10,000 $0.1352
  • 12,500 $0.1352
  • 37,500 $0.1326
$0.1326 / $0.1391 Buy Now
DISTI # LM2903WDT
Avnet Silica Analogue Comparator Low Power 2 Channels 13 s 2V to 36V 1V to 18V SOIC 8 Pins (Alt: LM2903WDT) RoHS: Compliant Min Qty: 2500 Package Multiple: 2500 Lead time: 9 Weeks, 0 Days Silica - 22500
Buy Now
DISTI # LM2903WDT
Chip One Stop Semiconductors RoHS: Compliant pbFree: Yes Min Qty: 5 Lead time: 0 Weeks, 1 Days Container: Cut Tape 4945
  • 5 $0.3290
  • 50 $0.2480
  • 100 $0.2450
  • 500 $0.2340
  • 1,000 $0.2290
  • 10,000 $0.2280
  • 20,000 $0.2180
$0.2180 / $0.3290 Buy Now
DISTI # LM2903WDT
EBV Elektronik Analogue Comparator Low Power 2 Channels 13 s 2V to 36V 1V to 18V SOIC 8 Pins (Alt: LM2903WDT) RoHS: Compliant Min Qty: 2500 Package Multiple: 2500 Lead time: 9 Weeks, 0 Days EBV - 0
Buy Now

Part Details for LM2903WDT

LM2903WDT CAD Models

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LM2903WDT Part Data Attributes

Parametric Data
LM2903WDT STMicroelectronics
Buy Now Datasheet
Compare Parts:
LM2903WDT STMicroelectronics Low power dual voltage comparator
Rohs Code Yes
Part Life Cycle Code Active
Ihs Manufacturer STMICROELECTRONICS
Part Package Code SOIC
Package Description ROHS COMPLIANT, MICRO, PLASTIC, SOP-8
Pin Count 8
Reach Compliance Code compliant
ECCN Code EAR99
HTS Code 8542.39.00.01
Factory Lead Time 8 Weeks
Samacsys Manufacturer STMicroelectronics
Amplifier Type COMPARATOR
Average Bias Current-Max (IIB) 0.4 µA
Bias Current-Max (IIB) @25C 0.25 µA
Input Offset Voltage-Max 15000 µV
JESD-30 Code R-PDSO-G8
Length 4.9 mm
Number of Functions 2
Number of Terminals 8
Operating Temperature-Max 125 °C
Operating Temperature-Min -40 °C
Output Type OPEN-COLLECTOR
Package Body Material PLASTIC/EPOXY
Package Code SOP
Package Equivalence Code SOP8,.25
Package Shape RECTANGULAR
Package Style SMALL OUTLINE
Packing Method TR
Peak Reflow Temperature (Cel) NOT SPECIFIED
Qualification Status Not Qualified
Response Time-Nom 1300 ns
Seated Height-Max 1.75 mm
Supply Current-Max 2.5 mA
Supply Voltage Limit-Max 36 V
Supply Voltage-Nom (Vsup) 5 V
Surface Mount YES
Technology BIPOLAR
Temperature Grade AUTOMOTIVE
Terminal Form GULL WING
Terminal Pitch 1.27 mm
Terminal Position DUAL
Time@Peak Reflow Temperature-Max (s) NOT SPECIFIED
Width 3.9 mm

Alternate Parts for LM2903WDT

This table gives cross-reference parts and alternative options found for LM2903WDT. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of LM2903WDT, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.

Part Number Manufacturer Composite Price Description Compare
LM2903WDT ROHM Semiconductor Check for Price Comparator, PDSO8, LEAD FREE, SOP-8 LM2903WDT vs LM2903WDT
Part Number Manufacturer Composite Price Description Compare
LM2903HDT STMicroelectronics Check for Price Low power dual voltage comparator LM2903WDT vs LM2903HDT
LM2903J National Semiconductor Corporation Check for Price IC DUAL COMPARATOR, 15000 uV OFFSET-MAX, 1500 ns RESPONSE TIME, CDIP8, DIP-8, Comparator LM2903WDT vs LM2903J
LM2903J Texas Instruments Check for Price DUAL COMPARATOR, 15000uV OFFSET-MAX, 1500ns RESPONSE TIME, CDIP8, DIP-8 LM2903WDT vs LM2903J
LM2903J STMicroelectronics Check for Price DUAL COMPARATOR, 15000uV OFFSET-MAX, 1300ns RESPONSE TIME, CDIP8, CERDIP-8 LM2903WDT vs LM2903J
LM2903JG Texas Instruments Check for Price DUAL COMPARATOR, 15000uV OFFSET-MAX, 1300ns RESPONSE TIME, CDIP8, 0.300 INCH, HERMETIC SEALED, CERAMIC, DIP-8 LM2903WDT vs LM2903JG

LM2903WDT Related Parts

LM2903WDT Frequently Asked Questions (FAQ)

  • The WDIN pin is used to reset the watchdog timer. When the WDIN pin is driven high, the watchdog timer is reset, and the countdown starts again from the beginning.

  • The watchdog timer period is set by connecting a resistor and capacitor between the REXT and CEXT pins. The formula to calculate the period is: T = 1.4 * REXT * CEXT. The recommended values for REXT and CEXT are 10 kΩ and 100 nF, respectively.

  • When the watchdog timer expires, the WDO pin goes high, and the reset signal is asserted, which resets the microcontroller or system.

  • Yes, the LM2903WDT can operate with a power supply voltage as low as 2.5V, making it suitable for 3.3V systems.

  • Yes, the LM2903WDT can operate with a power supply voltage up to 5.5V, making it compatible with 5V systems.

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