Texas Instruments SN74ALS09 Quadruple 2-Input Positive-AND Gates With Open-Collector Outputs SN74ALS09D

The SN74ALS09 is a quadruple 2-input positive-AND gate with open-collector outputs, designed for use in digital logic applications. Each gate performs the Boolean function Y = A ,Ä¢ B, and the open-collector outputs require external pull-up resistors for proper operation. This configuration allows for wired-OR and wired-AND implementations, making it suitable for applications that require higher output voltage levels. The device operates with a supply voltage range of 4.5V to 5.5V and is characterized for a temperature range of 0¬8C to 70¬8C. It features a maximum low-level output current of 8 mA and a high-level output voltage of up to 5.5V. The propagation delay times for the SN74ALS09 are specified as 23 ns for the low-to-high transition and 5 ns for the high-to-low transition under typical conditions. The SN74ALS09 is available in various package options, including a 14-pin SOIC (D) package. It is suitable for applications requiring reliable performance in standard temperature ranges and is commonly used in digital circuits where open-collector outputs are advantageous.