SN74LVC2G66-Q1

The SN74LVC2G66-Q1 is a dual 2-input multiplexer/demultiplexer from Texas Instruments, designed for high-speed switching applications in automotive and industrial environments. It features two independent 2-to-1 multiplexers that allow selection between two input signals based on a control signal, enabling flexible signal routing in complex electronic systems. This device operates with a supply voltage range of 1.65 V to 3.6 V, making it compatible with low-voltage logic families while maintaining robust performance under varying power conditions. Its low static current consumption (typically 4 µA at 25°C) ensures minimal power dissipation, which is critical for battery-powered or energy-efficient designs. The IC also supports a wide operating temperature range from –40°C to +125°C, meeting the stringent requirements of AEC-Q100 qualified automotive applications. Each multiplexer has two data inputs (A and B), one select input (S), and a single output (Y). When S is LOW, input A is routed to Y; when S is HIGH, input B is selected. The outputs are capable of driving up to 24 mA of sink current, offering strong drive capability for interfacing with various loads, including LEDs, relays, or other digital circuits. The propagation delay is typically less than 3 ns at 3.3 V, ensuring fast switching speeds essential for real-time signal processing. The SN74LVC2G66-Q1 includes built-in ESD protection (±2 kV HBM), enhancing reliability in harsh electromagnetic environments commonly found in automotive systems. It is available in a compact 8-pin SOIC package, facilitating easy integration into space-constrained designs. The device is fully compatible with TTL and CMOS logic levels, providing flexibility in system-level interface design. Common applications include signal routing in automotive control units, sensor multiplexing in engine management systems, and configurable I/O paths in industrial automation equipment. It is especially useful where reliable, low-power, and high-speed signal selection is required in demanding environments. The Q1 suffix indicates compliance with AEC-Q100 Grade 1 qualification, ensuring long-term reliability for automotive-grade deployments.