UC1903J The Texas Instruments UC1903J is a Quad Supply and Line Monitor IC designed to monitor up to four separate voltage levels. It operates from 8V to 40V and has a wide temperature range.
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UC1903J

Available from 1 distributors
Mfr Name: Unitrode
Unitrode
The Texas Instruments UC1903J is a Quad Supply and Line Monitor IC designed to monitor up to four separate voltage levels. It operates from 8V to 40V and has a wide temperature range.
✓ Total Stock: 9 pcs
$ Price Range: $1.92

UC1903J Available from 1 distributor

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UC1903J Specifications Quick View

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UC1903J Description

Short technical summary and product information.

The UC1903J from Texas Instruments is a versatile Quad Supply and Line Monitor integrated circuit. It is designed to continuously monitor up to four separate voltage levels, with the capability to sense negative supply voltages via an internal inverter.

 

Key electrical features include a supply voltage range of 8V to 40V, a typical standby current of 7mA, and a precision 2.5V reference. The device offers programmable under- and over-voltage fault thresholds with proportional hysteresis. It provides three high-current, open-collector outputs to indicate over-voltage, under-voltage, and power-OK conditions.

 

This IC operates within a wide temperature range of -55°C to 125°C. It is housed in a 18-pin CDIP package suitable for through-hole mounting. The package dimensions are 23.1mm in length, 6.92mm in width, with a pitch of 2.54mm.

 

The UC1903J is suitable for applications requiring robust power supply monitoring and fault detection.

UC1903J Quick Information

Product Type: Quad Supply and Line Monitor
Series: UC1903
Canonical Name: UC1903J Quad Supply and Line Monitor
Subcategory: Voltage Regulators - Linear Regulator Controllers

UC1903J Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

UC1903J Estimated Pricing

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1+ $1.92 $1.92

Estimated market price range - modelled values for guidance only, not live distributor offers.

UC1903J Features

  • Monitors up to four separate voltage levels.
  • Operates from 8V to 40V supply voltage.
  • Wide temperature range from -55°C to 125°C.
  • Includes programmable under/over-voltage thresholds.
  • Features open-collector outputs for fault indication.

UC1903J Applications

  • Monitors multiple power supply rails.
  • Detects early power source failures.
  • Provides power-OK status indication.
  • Suitable for systems with negative voltage rails.

UC1903J FAQs

5 frequently asked questions generated from this part’s specifications.
What is the operating temperature range for the UC1903J?

The operating temperature range is from -55°C to 125°C.

What is the supply voltage range for the UC1903J?

The supply voltage range is from 8V to 40V.

How many supplies can the UC1903J monitor?

The UC1903J can monitor up to four separate supply voltage levels.

What type of package is the UC1903J in?

The UC1903J is available in a 18-CDIP package.

What is the typical standby current for the UC1903J?

The typical standby current is 7mA.

UC1903J Alternate Parts

Same form/fit/function or matching attribute configuration across different manufacturers.
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The Texas Instruments MM54HC4060J is a 14-bit binary counter utilizing CMOS technology. It operates within a temperature range of -55°C to 125°C.
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