Overview
The CD4067BM is a 16-channel analog multiplexer or demultiplexer produced by Texas Instruments. It is part of the CD40x7B series, which features high-voltage types with a 20V rating. This device is designed to handle analog signal and digital multiplexing, demultiplexing, and various other applications requiring low ON resistance and high OFF resistance.
The CD4067BM is digitally controlled with four binary control inputs (A, B, C, D) and an inhibit input, allowing any combination of these inputs to select one of the 16 channels. It is available in several package types, including the 24-lead SOIC (Small Outline Integrated Circuit) package, making it versatile for different PCB layouts and space constraints.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Number of Channels | 16 | |
| ON Resistance (RON) | 125Ω (typ) over 15Vp-p signal-input range | VDD – VSS = 15V |
| OFF Resistance (Channel Leakage) | ±10pA (typ) | VDD – VSS = 10V |
| Matched Switch Characteristics | RON = 5Ω (typ) | VDD – VSS = 15V |
| Quiescent Power Dissipation | 0.2µW (typ) | VDD – VSS = 10V |
| Operating Temperature Range | -55°C to 125°C | |
| Supply Voltage Range | 3V to 18V | |
| Package Type | 24-lead SOIC | |
| Maximum Input Current | 1µA at 18V | Over full package temperature range |
Key Features
- High-voltage types with a 20V rating
- Low ON resistance: 125Ω (typ) over 15Vp-p signal-input range for VDD – VSS = 15V
- High OFF resistance: channel leakage of ±10pA (typ) at VDD – VSS = 10V
- Matched switch characteristics: RON = 5Ω (typ) for VDD – VSS = 15V
- Very low quiescent power dissipation under all digital-control input and supply conditions: 0.2µW (typ) at VDD – VSS = 10V
- Binary address decoding on chip
- 5V, 10V, and 15V parametric ratings
- 100% tested for quiescent current at 20V
- Standardized symmetrical output characteristics
- Maximum input current of 1µA at 18V over full package temperature range
Applications
- Analog and digital multiplexing and demultiplexing
- A/D and D/A conversion
- Signal gating
- Transmission-gate logic implementation
- Data acquisition systems
- Instrumentation
- Audio signal routing
- Analog signal processing
Q & A
- What is the CD4067BM used for?
The CD4067BM is used for analog and digital multiplexing and demultiplexing, A/D and D/A conversion, signal gating, and transmission-gate logic implementation.
- What are the key features of the CD4067BM?
The key features include low ON resistance, high OFF resistance, very low quiescent power dissipation, binary address decoding on chip, and standardized symmetrical output characteristics.
- What are the operating temperature and voltage ranges for the CD4067BM?
The operating temperature range is -55°C to 125°C, and the supply voltage range is 3V to 18V.
- What package types are available for the CD4067BM?
The CD4067BM is available in a 24-lead SOIC package among other options.
- How does the inhibit input function on the CD4067BM?
A logic '1' present at the inhibit input turns all channels off.
- What is the maximum input current for the CD4067BM?
The maximum input current is 1µA at 18V over the full package temperature range.
- Does the performance of the CD4067BM vary with temperature?
Yes, the performance can vary with temperature, so it should be operated within the specified temperature range for best results.
- What are some design considerations when using the CD4067BM in a PCB?
Keep the analog signal paths short and avoid routing them close to noisy digital signals to minimize interference and signal degradation.
- What are some common applications of the CD4067BM?
Common applications include data acquisition systems, instrumentation, audio signal routing, and analog signal processing.
- Is the CD4067BM lead-free and ROHS compliant?
Yes, the CD4067BM is lead-free and ROHS compliant.
