Onsemi MC14052BCP: Dual 4-Channel Analog Multiplexer/Demultiplexer Datasheet and Application Overview

The Onsemi MC14052BCP is a monolithic CMOS analog integrated circuit designed as a dual 4-channel analog multiplexer/demultiplexer. This device is a cornerstone in signal routing applications, providing engineers with a reliable and versatile solution for managing multiple analog or digital signals with minimal cross-talk and high accuracy.

Housed in a 16-pin DIP (Dual In-line Package), the MC14052BCP consists of two independent 4-channel multiplexers. Each multiplexer features three binary control inputs (A, B, and INH). The 'A' and 'B' inputs select one of the four channels, while the INH (Inhibit) input acts as a master disable; a high logic level on INH disconnects all channels, forcing the common output (Z) to a high-impedance state. This allows for easy expansion to handle a larger number of inputs or for power-saving modes.

A key strength of this IC lies in its analog capabilities. It can handle analog signals up to the supply voltage range (VDD to VEE), which is typically from -5V to +5V with a dual supply or 0V to 10V with a single supply. The low "on" resistance (typically 270Ω with a 10V supply) and its flatness across the signal range ensure minimal distortion and signal loss, making it suitable for precision audio, video, and data acquisition systems.

Typical applications highlighted in the datasheet are extensive:

Data Acquisition Systems: Multiplexing analog sensor signals from multiple sources into a single analog-to-digital converter (ADC).

Audio and Video Signal Routing: Switching between different audio or composite video sources.

Programmable Logic and Instrumentation: Implementing hardware-based logic functions and configuring test equipment.

Communication Systems: Used for signal gating and modulation/demodulation circuits.

When designing with the MC14052BCP, critical considerations from the datasheet include:

Supply Voltage: The recommended supply voltage range is 3V to 18V, offering great flexibility for various system voltages.

Digital Control Compatibility: The control inputs are compatible with standard CMOS logic levels and, due to high input impedance, are also TTL-compatible with the use of a pull-up resistor.

Signal Integrity: To minimize digital switching noise from affecting the analog signal path, it is crucial to bypass the power supply pins (VDD and VSS) with capacitors close to the IC and to use a solid ground plane.

ICGOODFIND Summary:

The Onsemi MC14052BCP remains a highly robust and cost-effective solution for analog and digital signal multiplexing. Its wide voltage range, low on-resistance, and simple digital control interface make it an excellent choice for a vast array of design applications, from industrial controls to consumer electronics. Its enduring popularity is a testament to its reliability and performance.

Keywords:

Analog Multiplexer, Signal Routing, CMOS, Data Acquisition, Low On-Resistance