74HC251N,652

Product Overview

• Category: Integrated Circuit (IC)
• Use: Data Selector/Multiplexer
• Characteristics:
  • High-speed operation
  • Low power consumption
  • Wide operating voltage range
  • Multiple input/output options
• Package: DIP-16 (Dual In-line Package with 16 pins)
• Essence: The 74HC251N,652 is a multiplexer IC that allows the selection of one out of eight data inputs to be routed to a single output.
• Packaging/Quantity: Available in tape and reel packaging, with 2,500 units per reel.

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +125°C
• Propagation Delay: 10 ns (typical)
• Input Capacitance: 3.5 pF (typical)
• Output Current: ±25 mA

Pin Configuration

The 74HC251N,652 has 16 pins arranged as follows:

+---+--+---+ S0 --|1 +--+ 16|-- VCC S1 --|2 15|-- GND S2 --|3 14|-- Y I0 --|4 13|-- I7 I1 --|5 12|-- I6 I2 --|6 11|-- I5 I3 --|7 10|-- I4 E --|8 9|-- G +----------+

Functional Features

• The 74HC251N,652 is a 3-to-8 line data selector/multiplexer.
• It allows the selection of one out of eight data inputs to be routed to the output based on the control inputs (S0, S1, and S2).
• The enable input (E) controls the operation of the IC.
• When E is low, the outputs are in a high-impedance state.
• The G input is used for gating the outputs.

Advantages

• High-speed operation allows for efficient data selection.
• Low power consumption makes it suitable for battery-powered devices.
• Wide operating voltage range provides flexibility in various applications.
• Multiple input/output options offer versatility in circuit design.

Disadvantages

• Limited to 3-to-8 line data selection/multiplexing, not suitable for larger-scale applications.
• DIP-16 package may require additional space compared to surface-mount packages.

Working Principles

The 74HC251N,652 works by using the control inputs (S0, S1, and S2) to select one of the eight data inputs (I0 to I7) and route it to the output pin (Y). The enable input (E) controls the operation of the IC. When E is low, the outputs are disabled and put into a high-impedance state. The G input is used for gating the outputs, allowing for further control over the output signals.

Detailed Application Field Plans

The 74HC251N,652 can be used in various applications, including:

1. Data multiplexing in digital systems
2. Address decoding in memory circuits
3. Input selection in microcontroller-based systems
4. Signal routing in communication systems
5. Control signal selection in industrial automation

Alternative Models

Some alternative models that provide similar functionality to the 74HC251N,652 include:

1. CD74HC251E
2. SN74HC251N
3. MC74HC251N
4. 74HCT251N

These models can be considered as alternatives based on their specifications, pin configuration, and functional features.

In conclusion, the 74HC251N,652 is a versatile data selector/multiplexer IC with high-speed operation, low power consumption, and multiple input/output options. It finds applications in various fields such as digital systems, memory circuits, and communication systems. While it has some limitations, there are alternative models available to suit specific requirements.