DS1233MS-3/T&R

Product Overview

Category

The DS1233MS-3/T&R belongs to the category of integrated circuits (ICs).

Use

This product is commonly used for voltage monitoring and reset functions in various electronic devices.

Characteristics

• Voltage monitoring: The DS1233MS-3/T&R can monitor the supply voltage and provide a reset signal when it falls below a certain threshold.
• Reset function: It ensures that the microcontroller or other digital circuitry starts in a known state after power-up or brownout conditions.
• Low power consumption: The device operates with low quiescent current, making it suitable for battery-powered applications.
• Small package size: The DS1233MS-3/T&R is available in a compact surface-mount package, enabling space-efficient designs.
• RoHS compliant: This product meets the Restriction of Hazardous Substances directive, ensuring environmental friendliness.

Package and Quantity

The DS1233MS-3/T&R is packaged in a tape and reel format, which facilitates automated assembly processes. It is typically supplied in quantities of 2500 units per reel.

Specifications

• Supply voltage range: 2.7V to 5.5V
• Reset threshold voltage options: 4.63V, 4.38V, 4.00V, 3.08V, 2.93V, 2.63V
• Reset timeout period: 140ms (min)
• Quiescent current: 10µA (typ)
• Operating temperature range: -40°C to +85°C

Detailed Pin Configuration

The DS1233MS-3/T&R features a 6-pin SOT-23 package with the following pin configuration:

1. GND: Ground connection
2. VCC: Positive supply voltage input
3. RESET: Output reset signal
4. GND: Ground connection
5. MR: Manual reset input (active-low)
6. VCC: Positive supply voltage input

Functional Features

1. Voltage monitoring: The DS1233MS-3/T&R continuously monitors the supply voltage and compares it to the preset threshold voltage.
2. Reset generation: When the supply voltage falls below the threshold, the device asserts the reset signal, ensuring a controlled restart of the system.
3. Manual reset: The MR pin allows for manual assertion of the reset signal, overriding the voltage monitoring function.
4. Reset timeout: After power-up or a voltage drop, the reset signal remains asserted for a fixed period to ensure stable system operation.

Advantages and Disadvantages

Advantages

• Reliable voltage monitoring and reset functionality
• Low power consumption for energy-efficient designs
• Compact package size for space-constrained applications
• RoHS compliant for environmental compliance

Disadvantages

• Limited number of available threshold voltage options
• Lack of additional advanced features compared to some competing models

Working Principles

The DS1233MS-3/T&R operates by comparing the supply voltage with the preset threshold voltage. If the supply voltage drops below the threshold, the device generates a reset signal. This ensures that the connected microcontroller or digital circuitry starts in a known state. The reset signal remains asserted for a fixed timeout period, allowing the system to stabilize before normal operation resumes.

Detailed Application Field Plans

The DS1233MS-3/T&R finds application in various electronic devices where voltage monitoring and reset functions are critical. Some specific application fields include:

1. Microcontrollers: Ensuring reliable startup and reset functionality in microcontroller-based systems.
2. Embedded Systems: Providing voltage monitoring and reset capabilities in embedded systems for enhanced reliability.
3. Industrial Automation: Supporting stable operation and recovery in industrial automation equipment.
4. Consumer Electronics: Enabling safe and controlled restarts in consumer electronic devices such as smart home appliances and IoT devices.

Detailed and Complete Alternative Models

1. DS1233A-5+: Similar to DS1233MS-3/T&R, but with a different package (8-pin SOIC) and wider supply voltage range.
2. MAX1233ESA+: Offers similar functionality with additional features like adjustable reset timeout and watchdog timer.
3. MCP101T-450I/TT: Provides voltage monitoring and reset functions in a different package (SOT-23-3) with a lower quiescent current.

These alternative models offer similar voltage monitoring and reset capabilities, catering to different application requirements and preferences.

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