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SN74HC157DR
+Lista de MateriaisIC MULTIPLEXER 4 X 2:1 16SOIC
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FabricanteTexas Instruments
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Peça do Fabricante #SN74HC157DR
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Ficha Técnica SN74HC157DR DataSheet
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Especificações
| Atributo | Valor |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| Series | 74HC |
| ProductStatus | Active |
| Type | Multiplexer |
| Circuit | 4 x 2:1 |
| IndependentCircuits | 1 |
| Current-OutputHighLow | 7.8mA, 7.8mA |
| VoltageSupplySource | Single Supply |
| Voltage-Supply | 2V ~ 6V |
| OperatingTemperature | -40°C ~ 85°C |
| MountingType | Surface Mount |
| Package/Case | 16-SOIC (0.154, 3.90mm Width) |
Visão Geral
Description
The SN74HC157DR selects data lines based on the state of the select input (S): when S is low, the multiplexer outputs the data present at the A inputs, and when S is high, it outputs the data present at the B inputs. The enable input (E) is active-low, meaning the device is enabled when E is low. This multiplexer also features low power consumption and high noise immunity, typical of CMOS devices.
The device comes in a small-outline integrated circuit (SOIC) package, making it suitable for space-constrained applications. It is widely used in digital circuits for data routing, switching, and signal multiplexing, offering a simple solution for combining multiple data sources into a single output stream.
Equivalent
Features
1. Logic: It provides four 2-input multiplexers with common select lines and enable input.
2. Voltage Range: Operates within a 2V to 6V supply voltage range, making it suitable for various applications.
3. Speed: Offers high-speed operation with a typical propagation delay of 14 ns at 5V.
4. Low Power Consumption: Features low power consumption with a typical quiescent current of 1 µA.
5. Input Compatibility: Compatible with TTL input levels, allowing easy integration with other logic families.
6. Output Drive: Provides high output drive capability to drive up to 10 LSTTL loads.
7. Temperature Range: Operates in a wide temperature range from -40°C to 85°C.
8. Package: Available in a SOIC-16 (Small Outline Integrated Circuit) package.
These features make the SN74HC157DR suitable for a variety of digital switching and data routing applications in consumer electronics, industrial equipment, and more.
Pinout
1. VCC (Pin 16): Supply voltage.
2. GND (Pin 8): Ground.
3. Select Input (Pin 1): Chooses between the two data inputs for all four multiplexers.
4. Enable Input (Pin 15): When low, the device is enabled; when high, all outputs are forced to a low state.
5. Data Inputs (Pins 2, 5, 11, 14): 1A, 2A, 3A, 4A for the A data inputs.
6. Data Inputs (Pins 3, 6, 10, 13): 1B, 2B, 3B, 4B for the B data inputs.
7. Outputs (Pins 4, 7, 9, 12): Y1, Y2, Y3, Y4 are the selected output lines.
The SN74HC157DR selects data from two sources and provides four outputs, which can be used for parallel data transmission, signal gating, or data routing applications.