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SN74157N
+Nomenclature-
FabricantTexas Instruments
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Pièce fabricant #SN74157N
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Package PDIP-16
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En stock8515
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Spécifications
| Attribut | Valeur |
| Mounting Type | 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 |
Présentation
Description
Each multiplexer has four data inputs, a common output, and two select inputs, enabling it to choose between multiple data sources. The SN74157N features low power consumption and a high-speed operation, typically achieving propagation delays in the nanosecond range. It is often used in communication systems, data acquisition, and control applications where efficient signal management is essential.
The device is housed in a 16-pin dual in-line package (DIP), making it suitable for prototyping and integration into various electronic circuits. Overall, the SN74157N is a versatile component for digital signal processing and routing tasks.
Equivalent
1. 74HC157
2. 74LS157
3. 74HCT157
These alternatives generally serve the same function but may differ in specifications like speed, power consumption, and logic family. Always consult the datasheets for specific electrical characteristics and compatibility for your application.
Features
1. Dual Multiplexer: Contains two independent 4-channel multiplexers, allowing for selection between multiple input signals.
2. Wide Supply Voltage Range: Operates from a supply voltage of 4.75V to 15V, making it versatile for various applications.
3. Low Power Consumption: Designed for low power usage, making it suitable for battery-operated devices.
4. High Speed: Offers fast switching times with propagation delays typically around 6-15 ns, facilitating quick signal processing.
5. TTL Compatible: Compatible with TTL (Transistor-Transistor Logic) levels, enabling easy integration into existing digital circuits.
6. Three-State Outputs: Provides high impedance outputs when not selected, which helps in minimizing loading effects on the selected channels.
7. Pin Configuration: Available in a 16-pin dual in-line package (DIP), facilitating easy mounting and integration into various PCB designs.
These features make the SN74157N an efficient choice for multiplexing applications in electronic systems.
Pinout
1. Pin 1 - GND: Ground connection.
2. Pin 2 - A1: Address input for selecting the channel.
3. Pin 3 - A0: Address input for selecting the channel.
4. Pin 4 - B0: Input data for channel 0.
5. Pin 5 - B1: Input data for channel 1.
6. Pin 6 - B2: Input data for channel 2.
7. Pin 7 - B3: Input data for channel 3.
8. Pin 8 - VCC: Power supply (typically +5V).
9. Pin 9 - Y0: Output for channel 0.
10. Pin 10 - Y1: Output for channel 1.
11. Pin 11 - Y2: Output for channel 2.
12. Pin 12 - Y3: Output for channel 3.
13. Pin 13-16 - Control pins (active low enable pins).
The device allows for the routing of four data inputs to a single output based on the address inputs, enabling selection and demultiplexing of data efficiently.
Manufacturer
Texas Instruments serves diverse markets, including automotive, industrial, communications, and consumer electronics. The SN74157N is a dual 4-input multiplexer, a type of digital switch used in various electronic applications to select one of multiple input signals and route it to a single output. TI's robust portfolio includes not only digital logic devices like the SN74157N but also microcontrollers, processors, sensors, and amplifiers.
As a significant player in the semiconductor industry, Texas Instruments is recognized for its commitment to quality, reliability, and technological advancement, making it a go-to source for engineers and designers in need of electronic components.