The S-81337HG-KE-T1 is a voltage detector IC manufactured by SII Semiconductor Corporation. This integrated circuit monitors the voltage level of a power supply and asserts a reset signal when the voltage falls below a predetermined threshold. This is crucial for preventing erratic behavior in microcontrollers and other sensitive electronic components due to under-voltage conditions. The '-KE' likely designates the specific voltage threshold, and the '-T1' typically indicates tape and reel packaging for automated assembly.

Applications

• Microcontroller reset circuits
• Power supply monitoring systems
• Battery-powered devices
• Embedded systems
• Industrial control equipment

Features

• High-accuracy voltage detection
• Ultra-low current consumption
• Open-drain output
• Compact SOT-23 package
• Hysteresis for noise immunity

Benefits

• Ensures proper system initialization and prevents data corruption during power-up/down
• Extends battery life in portable devices due to minimal power drain
• Simple integration into existing circuits with minimal external components
• Suitable for space-constrained applications
• Provides a stable and reliable reset signal

Technical Specifications

The S-81337HG-KE-T1 features a detection voltage specific to the 'KE' variant; consult the datasheet for the exact value. It consumes very little current, typically in the microampere range. The output is an open-drain N-channel MOSFET. The package is a SOT-23 surface-mount package. It incorporates hysteresis to avoid false triggering. The 'T1' indicates tape and reel packaging for automated assembly processes.

The open-drain output needs a pull-up resistor to establish the high-level voltage. When the input voltage drops below the threshold, the output transistor turns off, pulling the output high through the resistor. The hysteresis prevents chattering around the threshold voltage. This IC is designed for a wide range of low-power applications where accurate and reliable voltage monitoring is required.