CD74ACT157M

Product Overview

• Category: Integrated Circuit (IC)
• Use: Multiplexer
• Characteristics: High-speed, low-power, quad 2-input multiplexer
• Package: SOIC-16
• Essence: CD74ACT157M is a versatile multiplexer IC that allows the selection of one out of four data inputs to be routed to a single output.
• Packaging/Quantity: The CD74ACT157M is typically sold in reels or tubes containing multiple units.

Specifications

• Logic Family: ACT
• Number of Inputs: 4
• Number of Outputs: 1
• Supply Voltage: 2V - 6V
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 5.5 ns (typical)
• Output Current: ±24 mA
• Input Capacitance: 3 pF (typical)

Pin Configuration

The CD74ACT157M has a standard pin configuration as follows:

+---+--+---+ A0 |1 +--+ 16| VCC B0 |2 15| Y A1 |3 14| B1 B1 |4 13| A2 A2 |5 CD74 12| B2 B2 |6 ACT 11| A3 GND |7 157M 10| B3 B3 |8 9| OE# +----------+

Functional Features

• Quad 2-input multiplexer with common select inputs (A0 and A1)
• Output (Y) controlled by the select inputs
• Enable input (OE#) to disable the outputs
• High-speed operation with low power consumption
• Compatible with TTL and CMOS logic levels
• Schmitt-trigger inputs for noise immunity

Advantages and Disadvantages

Advantages

• Fast switching speed allows for high-performance applications
• Low power consumption makes it suitable for battery-powered devices
• Wide operating voltage range provides flexibility in various systems
• Compatibility with different logic families simplifies integration

Disadvantages

• Limited number of inputs and outputs restricts its application in complex systems
• Propagation delay may introduce timing issues in certain high-speed applications

Working Principles

The CD74ACT157M is a multiplexer that selects one of the four data inputs based on the select inputs (A0 and A1). The selected input is then routed to the output pin (Y). The enable input (OE#) can be used to disable the outputs when not needed. The IC operates at high speed while consuming low power, making it suitable for various digital applications.

Detailed Application Field Plans

The CD74ACT157M can be used in a wide range of applications, including:

1. Data routing and selection in microcontrollers and digital signal processors.
2. Address decoding in memory systems.
3. Input selection in audio/video switches.
4. Multiplexing control signals in communication systems.
5. Logic function implementation in digital circuits.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the CD74ACT157M are:

1. 74HC157: High-speed CMOS quad 2-input multiplexer.
2. CD4052: Dual 4-channel analog multiplexer/demultiplexer.
3. SN74LS151: TTL quad 2-input multiplexer with strobe.

These alternatives provide options with different characteristics and specifications, allowing users to choose the most suitable IC for their specific requirements.

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