The **TS391AL-AF5-R** is a low-power, single voltage comparator manufactured by Unisonic Technologies (UTC). It is designed to operate over a wide range of voltages and is commonly used in portable electronics due to its small footprint and efficiency. --- ### 1. Key Technical Specifications | Parameter | Specification | |:---|:---| | **Part Number** | TS391AL-AF5-R | | **Device Type** | Single Voltage Comparator | | **Supply Voltage (Vcc)** | 2V to 36V (Single) / ±1V to ±18V (Dual) | | **Supply Current** | 0.8mA (Typical) | | **Output Type** | Open Collector | | **Package Type** | SOT-25 / SOT-23-5 | | **Response Time** | 1.3μs (Typical) | --- ### 2. Pin Configuration The device is typically housed in a 5-pin SOT-25 package. The pinout is generally structured as follows: 1. **OUT**: Output (Open Collector) 2. **V-**: Ground or Negative Supply 3. **IN+**: Non-inverting Input 4. **IN-**: Inverting Input 5. **V+**: Positive Supply --- ### 3. Core Functional Characteristics * **Open Collector Output:** This requires an external pull-up resistor to function. This feature allows the output level to be independent of the Vcc supply, making it ideal for level shifting (e.g., interfacing 5V logic with 3.3V systems). * **Low Power Consumption:** Optimized for battery-powered applications, drawing minimal current even when switching. * **Wide Input Common-Mode Range:** The input voltage range includes ground, even when operated from a single supply voltage. * **High Precision:** Features low input offset voltage and bias current. --- ### 4. Typical Applications The TS391AL-AF5-R is versatile and can be found in several circuit types: * **Limit Comparators:** Checking if a voltage exceeds a certain threshold. * **Zero-Crossing Detectors:** Detecting when an AC signal crosses 0V. * **Battery Monitors:** Triggering an alert when battery voltage drops too low. * **Oscillators:** Used in simple square-wave generation circuits. --- ### 5. Part Number Decoding The suffix **-AF5-R** provides specific manufacturing details: * **AF5**: Refers to the SOT-25 package style. * **R**: Indicates "Tape and Reel" packaging for automated assembly. * **L**: Often denotes "Lead-free" or "Halogen-free" compliance (Green product).