MC74LCX258D

Overview

Category: Integrated Circuit (IC)

Use: Logic Multiplexer

Characteristics: - Low-voltage CMOS technology - High-speed operation - Wide operating voltage range - Low power consumption - Schmitt trigger inputs for noise immunity - Available in various package options

Package: SOIC (Small Outline Integrated Circuit)

Essence: MC74LCX258D is a logic multiplexer IC that allows multiple input signals to be selected and routed to a single output line based on the control inputs.

Packaging/Quantity: The MC74LCX258D is typically sold in reels or tubes containing 250 units per package.

Specifications

• Supply Voltage Range: 2.0V to 3.6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 100MHz
• Propagation Delay Time: 4.5ns (typical)
• Input Capacitance: 3pF (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MC74LCX258D has a total of 16 pins, which are assigned specific functions as follows:

1. A0: Data Input A
2. B0: Data Input B
3. C0: Data Input C
4. D0: Data Input D
5. E: Enable Input
6. Y: Multiplexed Output
7. GND: Ground
8. Y: Multiplexed Output
9. F: Select Input
10. C1: Data Input C
11. B1: Data Input B
12. A1: Data Input A
13. D1: Data Input D
14. VCC: Supply Voltage
15. Y: Multiplexed Output
16. GND: Ground

Functional Features

The MC74LCX258D is designed to perform the following functions: - Select one of the four data inputs (A, B, C, D) based on the select input (F) - Route the selected input to the multiplexed output (Y) - Enable or disable the multiplexer using the enable input (E)

Advantages and Disadvantages

Advantages: - Low-voltage operation allows for compatibility with various systems - High-speed operation enables efficient signal routing - Wide operating voltage range provides flexibility in different applications - Low power consumption helps conserve energy - Schmitt trigger inputs ensure noise immunity

Disadvantages: - Limited number of input channels (four in this case) - May require additional external components for specific applications

Working Principles

The MC74LCX258D operates based on the principles of digital logic. The select input (F) determines which of the four data inputs (A, B, C, D) is connected to the multiplexed output (Y). The enable input (E) controls the overall functionality of the multiplexer.

When the enable input is active, the selected data input is routed to the output. When the enable input is inactive, the output remains in a high-impedance state.

Detailed Application Field Plans

The MC74LCX258D can be used in various applications, including but not limited to: - Data routing and selection in microcontrollers - Signal multiplexing in communication systems - Address decoding in memory circuits - Input selection in analog-to-digital converters - Control signal routing in industrial automation

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to MC74LCX258D are: - CD4051B: 8-channel analog multiplexer/demultiplexer - SN74HC151: 8-input multiplexer - 74HC257: Quad 2-input multiplexer

These alternative models can be considered based on specific requirements and compatibility with the target system.

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