The **SN74LVC2G53** is a high-performance, low-voltage CMOS dual-channel analog multiplexer/demultiplexer. It is essentially a **2-to-1 analog switch** controlled by a digital input. --- ## 1. General Specifications The device is designed for 1.65-V to 5.5-V $V_{CC}$ operation. It features high-speed switching and low ON-state resistance. | Parameter | Value | | :--- | :--- | | **Logic Family** | LVC (Low-Voltage CMOS) | | **Configuration** | 2:1 Analog Multiplexer/Demultiplexer | | **Operating Voltage ($V_{CC}$)** | 1.65 V to 5.5 V | | **ON-State Resistance ($R_{on}$)** | ~6.0 $\Omega$ (at 4.5V $V_{CC}$) | | **Bandwidth** | Typical 300 MHz | | **Operating Temperature** | -40°C to 125°C | --- ## 2. Pin Configuration and Functions The "14" in your query likely refers to a specific package or revision variant (often the 8-pin versions like SSOP or VSSOP). Below is the standard functional pinout: | Pin Name | Type | Description | | :--- | :--- | :--- | | **Y0, Y1** | I/O | Independent channels (Input or Output) | | **Z** | I/O | Common channel (Output or Input) | | **S** | Input | Select control (Digital) | | **$\overline{E}$** | Input | Enable (Active Low) | | **GND** | Ground | 0V Reference | | **$V_{CC}$** | Power | Positive Supply | --- ## 3. Truth Table The logic determines which path (Y0 or Y1) is connected to the common terminal (Z). | Enable ($\overline{E}$) | Select (S) | ON Channel | | :---: | :---: | :--- | | L | L | **Z to Y0** | | L | H | **Z to Y1** | | H | X | **Disconnected (High-Z)** | --- ## 4. Key Electronic Characteristics ### A. Bidirectional Switching Because it uses CMOS transmission gates, the signal can flow from **Y to Z** (Multiplexing) or from **Z to Y** (Demultiplexing) with equal performance. ### B. Low Power Consumption As part of the LVC family, it has extremely low static power consumption ($I_{CC}$ max $\approx$ 10 $\mu$A), making it ideal for battery-powered devices. ### C. $I_{off}$ Circuitry The device supports **partial-power-down mode**. When $V_{CC} = 0V$, the inputs and outputs are isolated, preventing damaging current backflow into the device. --- ## 5. Common Applications * **Signal Gating:** Routing audio or low-speed data signals between different components. * **Gain Control:** Switching between different feedback resistors in an Op-Amp circuit. * **Sensor Multiplexing:** Connecting multiple analog sensors to a single ADC pin on a microcontroller. * **Voltage Level Translation:** Using the switch to interface between different logic levels (within $V_{CC}$ limits).