How to Use SV74LV4052APWR: Examples, Pinouts, and Specs

The SV74LV4052APWR is a dual 4-channel analog multiplexer/demultiplexer designed for high-speed switching applications. It features low ON resistance, making it ideal for routing analog or digital signals with minimal signal degradation. This component operates at low voltage levels, ensuring compatibility with modern low-power digital circuits. Its versatility makes it suitable for applications such as signal routing, data acquisition systems, audio switching, and communication systems.

The following table outlines the key technical specifications of the SV74LV4052APWR:

The SV74LV4052APWR is housed in a 16-pin TSSOP package. The pinout and descriptions are as follows:

1. Power Supply: Connect the VCC pin to a supply voltage between 2.0V and 5.5V. Connect the GND and VEE pins to ground.
2. Enable Input: The EN pin must be set LOW to enable the multiplexer. When EN is HIGH, all channels are disabled.
3. Address Selection: Use the A and B pins to select one of the four channels for each multiplexer:
   • A = 0, B = 0: Channel 0 selected
   • A = 0, B = 1: Channel 1 selected
   • A = 1, B = 0: Channel 2 selected
   • A = 1, B = 1: Channel 3 selected
4. Signal Routing: Connect the input/output signals to the Y0-Y3 and Z0-Z3 pins. The selected channel will route the signal to/from the COMY and COMZ pins.

• Voltage Levels: Ensure that the input signal voltage does not exceed the supply voltage (VCC).
• Decoupling Capacitors: Place a 0.1 µF decoupling capacitor close to the VCC pin to reduce noise and improve stability.
• Unused Pins: Tie unused input pins (e.g., A, B, EN) to a defined logic level (HIGH or LOW) to avoid floating inputs.
• Signal Integrity: For high-frequency signals, minimize trace lengths and use proper PCB layout techniques to reduce crosstalk and signal degradation.

The SV74LV4052APWR can be controlled using an Arduino UNO. Below is an example code snippet to select different channels of the multiplexer:

// Define control pins for the multiplexer
const int pinA = 2;  // Address select A
const int pinB = 3;  // Address select B
const int pinEN = 4; // Enable pin (active LOW)

void setup() {
  // Set control pins as outputs
  pinMode(pinA, OUTPUT);
  pinMode(pinB, OUTPUT);
  pinMode(pinEN, OUTPUT);

  // Enable the multiplexer
  digitalWrite(pinEN, LOW);
}

void loop() {
  // Select Channel 0 (A = 0, B = 0)
  digitalWrite(pinA, LOW);
  digitalWrite(pinB, LOW);
  delay(1000); // Wait for 1 second

  // Select Channel 1 (A = 0, B = 1)
  digitalWrite(pinA, LOW);
  digitalWrite(pinB, HIGH);
  delay(1000); // Wait for 1 second

  // Select Channel 2 (A = 1, B = 0)
  digitalWrite(pinA, HIGH);
  digitalWrite(pinB, LOW);
  delay(1000); // Wait for 1 second

  // Select Channel 3 (A = 1, B = 1)
  digitalWrite(pinA, HIGH);
  digitalWrite(pinB, HIGH);
  delay(1000); // Wait for 1 second
}

1. No Signal Output:

   • Ensure the EN pin is set to LOW to enable the multiplexer.
   • Verify that the address pins (A and B) are set correctly for the desired channel.

2. Signal Distortion:

   • Check that the input signal voltage is within the specified range.
   • Use shorter PCB traces to minimize signal degradation.

3. Unexpected Behavior:

   • Confirm that the power supply voltage is stable and within the specified range.
   • Ensure that unused input pins are tied to a defined logic level.

Q: Can the SV74LV4052APWR handle bidirectional signals?
A: Yes, the component supports bidirectional signal routing, making it suitable for both analog and digital signals.

Q: What is the maximum frequency the multiplexer can handle?
A: The maximum switching frequency is 100 MHz, but signal integrity may depend on PCB layout and trace lengths.

Q: Can I use this component with a 3.3V microcontroller?
A: Yes, the SV74LV4052APWR operates at supply voltages as low as 2.0V, making it compatible with 3.3V systems.