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74LS157 Quad 2 To 1 Line Multiplexer is a part of the 74XXYY IC series. The 74LS150 IC has a wide range of working voltage, a wide range of working conditions, and directly interfaces with CMOS, NMOS, and TTL. The output of the IC always comes in TTL which makes it easy to work with other TTL devices and microcontrollers. The IC also constitutes a wide array of features such as thermal overload protection & ESD protection. The IC 74LS157 is smaller in size and it has a much faster speed which makes it reliable in every kind of device.
What is a Multiplexer?
A multiplexer is a combinational logic circuit that switches one of several input lines to a single common output line. The select lines determine which input is connected to the output, and also to increase the amount of data that can be sent over a network within a certain time. It is also called a data selector.
74LS157 Pin Configuration
| Pin No | Pin Name | Description |
|---|---|---|
| 1 | S | Common Select Input |
| 2 | I0a | Data Input Pin From Source 0 |
| 3 | I1a | Data Input Pin From Source 1 |
| 4 | Za | Multiplexer Output |
| 5 | I0b | Data Input Pin From Source 0 |
| 6 | I1b | Data Input Pin From Source 1 |
| 7 | Zb | Multiplexer Output |
| 8 | GND | Ground Pin |
| 9 | Zd | Multiplexer Output |
| 10 | I1d | Data Input Pin From Source 1 |
| 11 | I0d | Data Input Pin From Source 0 |
| 12 | Zc | Multiplexer Output |
| 13 | I1c | Data Input Pin From Source 1 |
| 14 | I0c | Data Input Pin From Source 0 |
| 15 | E’ | Active Low Enable Pin |
| 16 | Vcc | Chip Supply Voltage |
Applications
- It is used to increase the efficiency of the communication system by allowing the transmission of data, such as audio & video data from different channels via cables and single lines.
You can download this Datasheet for 74LS157 Quad 2 To 1 Line Multiplexer from the link given below:
- Technology Family: LS
- Rating: Catalog
- Supply voltage: 5.25V
- Channels: 4
- Bits: 4
- Configuration: 2:1
- IOL (Max): 8mA
- IOH (Max): -0.4mA
- Frequency at nominal voltage: 35 MHz
- Typical propagation delay: 21nS
- Low power consumption: 32mW
- ESD protection
- Operating temperature: 0ºC to 70ºC
- ESD CDM (kV): 0.75
- ESD HBM (kV): 2
- Balanced propagation delays
- Designed specifically for high speed
- Product type: Standard
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