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UCC3946D The Texas Instruments UCC3946D is a microprocessor supervisor IC with a watchdog timer. It monitors a single supply voltage and provides an active-low, push-pull reset output.
Mfr Part #:

UCC3946D

Available from 3 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UCC3946D is a microprocessor supervisor IC with a watchdog timer. It monitors a single supply voltage and provides an active-low, push-pull reset output.
✓ Total Stock: 46,189 pcs
$ Price Range: $3.28

UCC3946D Available from 3 distributors

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✓ Non-Authorised
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Romaks Technologies ✓
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45,200 pcs
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45200 pcs On Request 1 On Request On Request On Request On Request On Request
Braun Electronic Components ✓
Non-Authorised Inventory information
876 pcs
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876 pcs On Request 1 On Request On Request On Request On Request On Request
Smaxon Electronics ✓
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113 pcs
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113 pcs On Request 1 On Request On Request 03+ On Request On Request
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UCC3946D Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Input Voltage
Mounting Type
Number of Voltages Monitored
Operating Temperature
Output
Quiescent Current
Reset
Reset Timeout
Supplier Device Package
Type
Voltage
Watchdog Timer
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UCC3946D Description

Short technical summary and product information.

The UCC3946D from Texas Instruments is a supervisor IC designed for microprocessor supervision, offering both reset and watchdog functionalities. It monitors a single supply voltage with a typical threshold of 1.235V and provides an active-low, push-pull reset output. The reset threshold accuracy is 2%, and the device features a programmable watchdog timer.

 

This IC is suitable for applications requiring reliable power-on reset and system monitoring. It operates within a temperature range of 0°C to 70°C and is available in an 8-SOIC surface-mount package. The device is designed to be resistant to glitches on the VDD line, ensuring stable operation.

 

Key features include a programmable reset threshold and period, along with a programmable watchdog period. The input voltage can be as low as 1V for reset validity, with a maximum input current of 18-µA. This makes the UCC3946D a robust solution for embedded systems requiring supervision.

UCC3946D Quick Information

Product Type: Supervisor IC
Canonical Name: UCC3946D Microprocessor Supervisor with Watchdog Timer
Subcategory: Reset & Watchdog ICs

UCC3946D Compliance

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

UCC3946D Estimated Pricing

Qty Low High
1+ $3.28 $3.28

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

UCC3946D Features

  • Monitors a single supply voltage.
  • Features active-low, push-pull reset output.
  • Includes a programmable watchdog timer.
  • Operates from 0°C to 70°C.
  • Available in 8-SOIC package.

UCC3946D Applications

  • Provides microprocessor reset functions.
  • Ensures system stability with watchdog timer.
  • Suitable for power-on reset applications.
  • Used in embedded control systems.

UCC3946D FAQs

7 frequently asked questions generated from this part’s specifications.
What is the package type of the UCC3946D?

The UCC3946D is available in an 8-SOIC (0.154", 3.90mm Width) surface-mount package.

What is the operating temperature range of the UCC3946D?

The operating temperature range is 0°C to 70°C.

What is the threshold voltage of the UCC3946D?

The typical threshold voltage is 1.235V.

What is the quiescent current of the UCC3946D?

The typical quiescent current is 0.01mA.

Does the UCC3946D have a watchdog timer?

Yes, it has a programmable watchdog timer.

What is the reset timeout of the UCC3946D?

The reset timeout is 160ms minimum.

What is the minimum input voltage for the UCC3946D?

The input voltage can operate down to 1V.

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