74HCT251D-Q100J

Product Overview

• Category: Integrated Circuit (IC)
• Use: Data Selector/Multiplexer
• Characteristics: High-speed, low-power, CMOS technology
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: A multiplexer that selects one of eight data inputs and routes it to a single output
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2.0V to 6.0V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +125°C
• Propagation Delay: 13 ns (typical)
• Quiescent Current: 4 µA (typical)

Detailed Pin Configuration

The 74HCT251D-Q100J has the following pin configuration:

1. GND (Ground)
2. I0 (Data Input 0)
3. I1 (Data Input 1)
4. I2 (Data Input 2)
5. I3 (Data Input 3)
6. I4 (Data Input 4)
7. I5 (Data Input 5)
8. I6 (Data Input 6)
9. I7 (Data Input 7)
10. S (Select Input)
11. OE (Output Enable)
12. Y (Output)
13. VCC (Supply Voltage)

Functional Features

• 8-input multiplexer with common select input (S) and output enable input (OE)
• Selects one of the eight data inputs based on the select input
• Output is enabled when the output enable input is high
• High-speed operation allows for efficient data selection in various applications
• Low power consumption makes it suitable for battery-powered devices
• CMOS technology ensures compatibility with a wide range of digital systems

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data selection - Low power consumption extends battery life in portable devices - Wide supply voltage range allows for flexibility in different applications - Compact SOIC package saves board space

Disadvantages: - Limited to 8 inputs, may not be suitable for applications requiring more inputs - Propagation delay may affect real-time applications with strict timing requirements

Working Principles

The 74HCT251D-Q100J is a multiplexer that selects one of the eight data inputs based on the select input (S). When the output enable input (OE) is high, the selected data input is routed to the output (Y). The device operates using CMOS technology, which provides high-speed performance and low power consumption.

Detailed Application Field Plans

The 74HCT251D-Q100J can be used in various 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. Channel selection in communication systems
5. Control signal routing in industrial automation

Detailed and Complete Alternative Models

Some alternative models to the 74HCT251D-Q100J include:

1. 74HC151: 8-input multiplexer with similar characteristics but operates at a higher voltage range (2V to 6V)
2. CD4051B: 8-channel analog multiplexer/demultiplexer with wider input voltage range (0V to VCC)
3. SN74LS151: 8-input multiplexer with TTL logic levels and faster propagation delay

These alternative models offer similar functionality but may have different specifications or package options.

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