DS1239S-5

Product Overview

Category

DS1239S-5 belongs to the category of integrated circuits (ICs).

Use

The DS1239S-5 is commonly used as a voltage supervisor and watchdog timer in various electronic systems.

Characteristics

• Voltage supervisor with adjustable threshold levels
• Watchdog timer with programmable timeout period
• Low power consumption
• Wide operating voltage range
• Small package size for space-constrained applications

Package

The DS1239S-5 is available in a small outline integrated circuit (SOIC) package.

Essence

The essence of DS1239S-5 lies in its ability to monitor and control the voltage levels and timing in electronic systems, ensuring their proper functioning and preventing malfunctions.

Packaging/Quantity

The DS1239S-5 is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Adjustable Threshold Voltage Levels: 1.8V to 4.6V
• Watchdog Timeout Period: Programmable from 0.06s to 6.3s
• Operating Temperature Range: -40°C to +85°C
• Package Type: SOIC-8

Detailed Pin Configuration

The DS1239S-5 has the following pin configuration:

1. GND (Ground)
2. RESET (Active-Low Reset Output)
3. VCC (Supply Voltage)
4. MR (Master Reset Input)
5. WDI (Watchdog Timer Input)
6. TH (Threshold Voltage Input)
7. TRIG (Trigger Output)
8. NC (No Connection)

Functional Features

Voltage Supervisor

The DS1239S-5 acts as a voltage supervisor by continuously monitoring the supply voltage. It generates a reset signal (RESET) when the voltage falls below a programmable threshold level (TH). This ensures that the system remains in a known state during power-up and power-down events.

Watchdog Timer

The watchdog timer feature of DS1239S-5 helps prevent system lock-ups or malfunctions. It requires a periodic input signal (WDI) to be toggled within a specified timeout period. If the WDI signal is not toggled within the set time, the DS1239S-5 triggers a reset signal (RESET), allowing the system to recover from potential errors.

Advantages and Disadvantages

Advantages

• Adjustable threshold levels provide flexibility for different voltage monitoring requirements.
• Programmable watchdog timeout period allows customization based on system needs.
• Low power consumption helps conserve energy in battery-powered applications.
• Wide operating voltage range enables compatibility with various supply voltages.
• Small package size facilitates integration into space-constrained designs.

Disadvantages

• Limited pin configuration options may restrict certain system architectures.
• Lack of built-in features for specific applications may require additional external components.

Working Principles

The DS1239S-5 operates by continuously monitoring the supply voltage and the watchdog input signal. It compares the supply voltage against the programmable threshold level. If the voltage drops below the threshold, it triggers a reset signal. Additionally, the watchdog timer requires a periodic input signal to be toggled within a specified timeout period. Failure to toggle the input signal within the set time results in a reset trigger.

Detailed Application Field Plans

The DS1239S-5 finds applications in various electronic systems, including but not limited to: - Microcontrollers and microprocessors - Embedded systems - Power management circuits - Industrial control systems - Automotive electronics - Medical devices

Detailed and Complete Alternative Models

Some alternative models to DS1239S-5 that offer similar functionality include: - MAX1239 - LTC1239 - MCP1239 - TPS1239

These alternative models provide voltage supervision and watchdog timer features, catering to different design requirements.

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