DS1239S-10+ - Product Overview

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Timing and Reset Controller
• Characteristics: High precision, low power consumption, compact size
• Package: SOP-8 (Small Outline Package)
• Essence: The DS1239S-10+ is a versatile timing and reset controller designed for various electronic applications.
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Timing Accuracy: ±2%
• Reset Threshold Voltage: Adjustable from 1.6V to 4.63V
• Watchdog Timer: Programmable timeout period up to 128 seconds
• Power-On Reset: Fixed delay of 200ms
• Manual Reset Input: Active-low input for manual system reset

Detailed Pin Configuration

The DS1239S-10+ features an SOP-8 package with the following pin configuration:

| Pin Number | Pin Name | Description | |------------|----------|-------------| | 1 | GND | Ground | | 2 | MR | Manual Reset Input | | 3 | VCC | Supply Voltage | | 4 | RESET | Active-low System Reset Output | | 5 | WDI | Watchdog Timer Input | | 6 | GND | Ground | | 7 | VCC | Supply Voltage | | 8 | VBAT | Backup Battery Input |

Functional Features

1. Timing Control: The DS1239S-10+ provides precise timing control for various electronic systems.
2. Reset Generation: It generates a system reset signal upon power-up, manual reset input, or watchdog timer expiration.
3. Watchdog Timer: The integrated watchdog timer monitors the system's operation and resets it if necessary.
4. Adjustable Reset Threshold: The reset threshold voltage can be adjusted to suit specific system requirements.
5. Backup Battery Input: The VBAT pin allows connection to an external backup battery for reliable operation during power loss.

Advantages and Disadvantages

Advantages: - High precision timing control - Low power consumption - Compact size for space-constrained applications - Adjustable reset threshold for flexibility

Disadvantages: - Limited timing accuracy of ±2% - Requires an external backup battery for backup power

Working Principles

The DS1239S-10+ operates by monitoring the system's operation through the watchdog timer input (WDI). If the system fails to toggle the WDI within the programmed timeout period, the IC generates a system reset signal (RESET) to restart the system. Additionally, it provides a power-on reset delay of 200ms upon power-up and supports manual system reset through the MR pin.

Detailed Application Field Plans

The DS1239S-10+ finds application in various electronic systems, including but not limited to: 1. Industrial Control Systems 2. Automotive Electronics 3. Medical Devices 4. Consumer Electronics 5. Communication Equipment

Detailed and Complete Alternative Models

1. DS1239S-5+: Similar to DS1239S-10+, but with a fixed reset threshold voltage of 2.93V.
2. DS1239S-20+: Similar to DS1239S-10+, but with a wider operating temperature range (-55°C to +125°C).
3. DS1239S-25+: Similar to DS1239S-10+, but with a higher timing accuracy of ±1%.

These alternative models provide options with different specifications to cater to specific application requirements.

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