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SN74157N
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- 製造商。 部分 #SN74157N
- 包 PDIP-16
- 資料表
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規格
| Mounting Style | Through Hole |
| Supply Voltage - Min | 4.75 V |
| Supply Voltage - Max | 5.25 V |
| Minimum Operating Temperature | 0 C |
| Maximum Operating Temperature | + 70 C |
| Brand | Texas Instruments |
| Product | Decoders / Demultiplexers |
| Product Type | Encoders, Decoders, Multiplexers & Demultiplexers |
| Subcategory | Logic ICs |
| Operating Supply Voltage | 5 V |
| Width | 6.35 mm |
| Height | 4.57 mm |
| Technology | Bipolar |
| Logic Family | 7400 |
| Number of Input Lines | 2 Input |
| Number of Output Lines | 1 Output |
| Propagation Delay Time | 14 ns at 5 V |
| Function | Multiplexer |
| Length | 19.3 mm |
| Logic Type | Data Selectors/Multiplexers |
| Series | SN74157 |
| Packaging | Tube |
| High Level Output Current | - 800 uA |
| Low Level Output Current | 16 mA |
| Number of Circuits | 4 Circuit |
| Package/Case | PDIP-16 |
| Unit Weight | 1,628 g |
概述
Description
The SN74157N is a part of the 7400 series of digital logic integrated circuits. It is a quad 2-to-1 multiplexer, which means it consists of four individual multiplexers within a single package. Each multiplexer can select one of two binary inputs to pass through to the output based on a common select signal. This IC is commonly used to route data from multiple sources to a single destination.
Key features of the SN74157N include:
1. Inputs and Outputs: It has eight input lines (A1, A2, A3, A4 and B1, B2, B3, B4), a common select line (S), and four outputs (Y1, Y2, Y3, Y4).
2. Enable Input: It also includes an active-low enable input (G), which must be low for the device to operate.
3. Logic Levels: Compatible with TTL logic levels.
4. Package Type: Typically, it comes in a 16-pin DIP (Dual In-line Package).
5. Applications: Used in data routing, digital signal multiplexing, and implementing logic functions.
The SN74157N is valued for its simplicity, reliability, and ease of integration into digital systems, making it a staple in electronic design.
Key features of the SN74157N include:
1. Inputs and Outputs: It has eight input lines (A1, A2, A3, A4 and B1, B2, B3, B4), a common select line (S), and four outputs (Y1, Y2, Y3, Y4).
2. Enable Input: It also includes an active-low enable input (G), which must be low for the device to operate.
3. Logic Levels: Compatible with TTL logic levels.
4. Package Type: Typically, it comes in a 16-pin DIP (Dual In-line Package).
5. Applications: Used in data routing, digital signal multiplexing, and implementing logic functions.
The SN74157N is valued for its simplicity, reliability, and ease of integration into digital systems, making it a staple in electronic design.
Features
The SN74157N is a quad 2-line to 1-line data selector/multiplexer. Key features include:
1. Quadruple 2:1 Multiplexer: It has four independent 2-input multiplexers, allowing selected data from two sources to be routed to four outputs.
2. Select Input: A single select line (S) determines which data input (A or B) is connected to the output.
3. Enable Pin: The device includes an active-low enable input (G), which allows the outputs to be disabled.
4. High-Speed Operation: Designed for fast switching, suitable for high-performance operations.
5. TTL Compatible: The SN74157N is compatible with TTL logic levels, making it easy to integrate into TTL-based systems.
6. Standard Logic Family: Part of the 74LS series, known for low power consumption and high noise immunity.
7. Package Type: Typically comes in a 16-pin DIP package.
8. Temperature Range: Operates within a standard commercial temperature range.
These features make the SN74157N suitable for applications requiring multiplexing capabilities, such as data routing and selection in digital circuits.
1. Quadruple 2:1 Multiplexer: It has four independent 2-input multiplexers, allowing selected data from two sources to be routed to four outputs.
2. Select Input: A single select line (S) determines which data input (A or B) is connected to the output.
3. Enable Pin: The device includes an active-low enable input (G), which allows the outputs to be disabled.
4. High-Speed Operation: Designed for fast switching, suitable for high-performance operations.
5. TTL Compatible: The SN74157N is compatible with TTL logic levels, making it easy to integrate into TTL-based systems.
6. Standard Logic Family: Part of the 74LS series, known for low power consumption and high noise immunity.
7. Package Type: Typically comes in a 16-pin DIP package.
8. Temperature Range: Operates within a standard commercial temperature range.
These features make the SN74157N suitable for applications requiring multiplexing capabilities, such as data routing and selection in digital circuits.
Package
The SN74157N is a quad 2-to-1 line data selector/multiplexer and is typically available in a 16-pin Dual In-line Package (DIP).
Pinout
The SN74157N is a quadruple 2-line to 1-line data selector/multiplexer IC. It has a total of 16 pins. The function of this IC is to select data from two sources and direct it to a single output line for each of the four multiplexers. Here are the pin functions:
1. Pins 1, 3, 4, 7: Data inputs from source A (1A, 2A, 3A, 4A respectively).
2. Pins 2, 5, 6, 14: Data inputs from source B (1B, 2B, 3B, 4B respectively).
3. Pins 9, 11, 12, 15: Outputs corresponding to each multiplexer (Y1, Y2, Y3, Y4 respectively).
4. Pin 10: Select input (S), used to choose between input sources A or B for the output.
5. Pin 13: Enable input (G), active low; the outputs are active when this pin is low.
6. Pin 8: Ground (GND).
7. Pin 16: Positive supply voltage (VCC).
The SN74157N facilitates the selection and routing of data signals, making it useful in digital circuits for tasks like data routing, switching, and selection.
1. Pins 1, 3, 4, 7: Data inputs from source A (1A, 2A, 3A, 4A respectively).
2. Pins 2, 5, 6, 14: Data inputs from source B (1B, 2B, 3B, 4B respectively).
3. Pins 9, 11, 12, 15: Outputs corresponding to each multiplexer (Y1, Y2, Y3, Y4 respectively).
4. Pin 10: Select input (S), used to choose between input sources A or B for the output.
5. Pin 13: Enable input (G), active low; the outputs are active when this pin is low.
6. Pin 8: Ground (GND).
7. Pin 16: Positive supply voltage (VCC).
The SN74157N facilitates the selection and routing of data signals, making it useful in digital circuits for tasks like data routing, switching, and selection.
Manufacturer
The SN74157N is a product originally manufactured by Texas Instruments. Texas Instruments (TI) is an American technology company known for designing and manufacturing semiconductors and various integrated circuits. TI is one of the largest producers of analog technology components, embedded processors, and digital light processors. It serves a wide range of industries, including automotive, industrial, personal electronics, communications equipment, and enterprise systems. As a leader in the semiconductor industry, TI focuses on innovation and development in electronics to provide solutions that improve performance and efficiency across various applications.
Application
The SN74157N is a quad 2-to-1 multiplexer used in digital electronics. It is applied in data routing, signal switching, and logic function implementation. Common uses include selecting between two data sources, simplifying logic designs, and managing data paths in processors and communication devices. Its ability to multiplex data lines makes it useful in computing and digital signal processing applications.
Equivalent
The SN74157N is a quad 2-to-1 multiplexer. Equivalent products include:
1. NTE74157
2. Fairchild 74LS157
3. ON Semiconductor MC74HC157A
4. Texas Instruments CD74HC157
5. Philips 74HCT157
These chips perform similar functions as the SN74157N and may vary in logic family and specific characteristics like power consumption or speed, so always check the datasheet for compatibility.
1. NTE74157
2. Fairchild 74LS157
3. ON Semiconductor MC74HC157A
4. Texas Instruments CD74HC157
5. Philips 74HCT157
These chips perform similar functions as the SN74157N and may vary in logic family and specific characteristics like power consumption or speed, so always check the datasheet for compatibility.
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