What is the IC number for demux?
1 Answer
The term "IC number" refers to an integrated circuit number, which is a unique identifier assigned to an IC by its manufacturer. A "demux" (short for "demultiplexer") is a type of digital circuit used to route data from one source to multiple destinations, meaning it takes a single input signal and channels it to one of many output lines based on control inputs.
Demux ICs are used in various applications like data transmission systems, communication systems, and electronic devices where one signal needs to be directed to different locations.
### Common Demux IC Numbers
Here are some typical IC numbers for demux chips:
1. **74LS138**: This is a 3-to-8 line demux, meaning it takes 3 input bits and produces one of 8 output lines based on the input combination. It is part of the 74LS series of ICs, which is widely used in digital electronics.
2. **74HC138**: Similar to the 74LS138, but it is part of the 74HC series, which uses a high-speed CMOS technology, offering lower power consumption and faster switching speeds than the LS (Low Power Schottky) series.
3. **74LS154**: This is a 4-to-16 line demux, meaning it takes 4 input bits and directs the signal to one of 16 possible output lines.
4. **CD74HC238**: This is another demux IC that can take 3 input bits and route the signal to one of 8 outputs. It uses CMOS technology, ensuring a balance between speed and power consumption.
5. **74LS390**: A more specialized demux IC that functions as a dual 4-bit binary counter with decoded outputs, and can be used in demux applications.
Each of these ICs operates based on control signals, often labeled as address lines, which determine which output line the input signal should be directed to.
### How Demux ICs Work
The IC's operation depends on the number of select lines (S) and the number of output lines. A demux typically has:
- **Data Input (D)**: The single signal being sent to the demux.
- **Select Inputs (S)**: These are control lines that determine which output line will receive the data.
- **Outputs (O)**: Multiple lines, with only one active at a time, depending on the combination of select lines.
For example, a 1-to-4 demux has:
- 1 data input
- 2 select inputs (to choose one of 4 output lines)
- 4 output lines (only one active at a time)
The IC's part number (e.g., 74LS138) tells you its specific configuration, such as the number of inputs and outputs.
Would you like more details on a specific demux IC or its applications?
Demux ICs are used in various applications like data transmission systems, communication systems, and electronic devices where one signal needs to be directed to different locations.
### Common Demux IC Numbers
Here are some typical IC numbers for demux chips:
1. **74LS138**: This is a 3-to-8 line demux, meaning it takes 3 input bits and produces one of 8 output lines based on the input combination. It is part of the 74LS series of ICs, which is widely used in digital electronics.
2. **74HC138**: Similar to the 74LS138, but it is part of the 74HC series, which uses a high-speed CMOS technology, offering lower power consumption and faster switching speeds than the LS (Low Power Schottky) series.
3. **74LS154**: This is a 4-to-16 line demux, meaning it takes 4 input bits and directs the signal to one of 16 possible output lines.
4. **CD74HC238**: This is another demux IC that can take 3 input bits and route the signal to one of 8 outputs. It uses CMOS technology, ensuring a balance between speed and power consumption.
5. **74LS390**: A more specialized demux IC that functions as a dual 4-bit binary counter with decoded outputs, and can be used in demux applications.
Each of these ICs operates based on control signals, often labeled as address lines, which determine which output line the input signal should be directed to.
### How Demux ICs Work
The IC's operation depends on the number of select lines (S) and the number of output lines. A demux typically has:
- **Data Input (D)**: The single signal being sent to the demux.
- **Select Inputs (S)**: These are control lines that determine which output line will receive the data.
- **Outputs (O)**: Multiple lines, with only one active at a time, depending on the combination of select lines.
For example, a 1-to-4 demux has:
- 1 data input
- 2 select inputs (to choose one of 4 output lines)
- 4 output lines (only one active at a time)
The IC's part number (e.g., 74LS138) tells you its specific configuration, such as the number of inputs and outputs.
Would you like more details on a specific demux IC or its applications?