The S-81340HG-KJ-T1 is a voltage detector IC manufactured by SII Semiconductor Corporation. It's designed to monitor voltage levels and provide a reset signal to microcontrollers or other devices when the voltage drops below a predefined threshold. This prevents damage or malfunction due to under-voltage conditions. The 'KJ' likely indicates a specific voltage detection level, while the 'T1' suggests tape and reel packaging.

Applications

• Microcontroller reset circuits
• Power supply monitoring
• Battery-powered devices
• Industrial control systems
• Automotive electronics

Features

• High-accuracy detection voltage
• Ultra-low current consumption
• Open-drain output
• Small SOT-23 package
• Hysteresis characteristics

Benefits

• Improved system reliability
• Extended battery life
• Simplified circuit design
• Compact solution for space-constrained applications
• Enhanced noise immunity

Technical Specifications

The S-81340HG-KJ-T1 features a detection voltage specific to the 'KJ' 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. It is packaged in a SOT-23 surface-mount package. The device includes hysteresis to prevent false triggering near the threshold voltage. The 'T1' designation indicates that it is supplied in tape and reel packaging for automated assembly.

The open-drain output requires a pull-up resistor to define the high-level voltage. When the input voltage falls below the threshold, the output transistor turns off, pulling the output high. The hysteresis prevents rapid switching (chattering) when the input voltage is near the threshold. It's designed for use in low-power applications where accurate voltage monitoring is crucial.