Onsemi MC14053BCP: Triple 2-Channel Analog Multiplexer/Demultiplexer Datasheet and Application Overview

The Onsemi MC14053BCP is a member of the 4000-series CMOS logic family, renowned for its robust performance and wide operating voltage range. This integrated circuit is a monolithic triple 2-channel analog multiplexer/demultiplexer, housed in a 16-pin plastic DIP package. Its primary function is to digitally control the routing of analog signals, making it an indispensable component in a vast array of mixed-signal and data acquisition systems.

Datasheet Key Specifications and Features

The operational characteristics of the MC14053BCP, as detailed in its datasheet, define its capabilities and ideal use cases. Key specifications include:

Wide Voltage Range: It operates from a 3 V to 18 V supply voltage, offering significant flexibility for interfacing with both TTL and higher voltage CMOS logic levels.

Low "On" Resistance: The device boasts a very low typical "on" resistance of 270 Ω at VDD = 15 V, which is consistent across all channels. This minimizes signal attenuation and distortion when switching analog voltages.

High "Off" Isolation: Excellent isolation between the inactive channel and the common output ensures that signals do not bleed through, preserving signal integrity.

Low Crosstalk: Minimal interference between the different internal switches allows for the clean routing of multiple independent signals on a single chip.

Digital Control: Channel selection is managed via three binary control inputs (A, B, C) and three independent inhibit inputs. A logic "1" on an inhibit pin disables all switches in its associated section.

Each of the three independent switches within the IC can function as either a multiplexer or a demultiplexer. In multiplexer mode, it selects one of two input signals to route to a common output. In demultiplexer mode, it directs a single input signal to one of two possible outputs, based on the state of the digital address lines.

Application Overview

The versatility of the MC14053BCP lends itself to numerous applications across electronics:

Analog and Digital Signal Multiplexing: It is commonly used to sequentially connect multiple sensors (e.g., temperature, pressure) to a single analog-to-digital converter (ADC) in a data acquisition system, significantly reducing system cost and complexity.

Programmable Gain Amplifiers: By switching different feedback resistors into an op-amp circuit, the MC14053BCP can be used to digitally control the gain of an amplifier stage.

Audio and Video Signal Routing: Its ability to handle analog signals makes it suitable for routing audio sources or composite video signals in consumer and professional equipment.

Communication Systems: The device can be used for signal gating and modulation/demodulation circuits where precise control of signal paths is required.

ICGOODFIND Summary

The Onsemi MC14053BCP is a highly versatile and reliable solution for analog signal switching. Its wide operating voltage range, low on-resistance, and high isolation make it a preferred choice for designers working on mixed-signal systems, data acquisition, and anywhere digital control over analog signal paths is needed. Its triple-channel configuration provides excellent functional density in a single package.

Keywords:

1. Analog Multiplexer

2. CMOS

3. Signal Switching

4. Low On-Resistance

5. Data Acquisition