Encyclopedia Entry: 74ACT258PC

Product Overview

Category

The 74ACT258PC belongs to the category of integrated circuits (ICs), specifically the family of ACT logic devices.

Use

This IC is commonly used in digital electronics for data multiplexing applications.

Characteristics

• The 74ACT258PC is a quad 2-input multiplexer with three-state outputs.
• It operates on a supply voltage range of 4.5V to 5.5V.
• This IC offers high-speed performance and low power consumption.
• It is designed to be compatible with TTL (Transistor-Transistor Logic) inputs.

Package

The 74ACT258PC is available in a 16-pin plastic dual in-line package (PDIP).

Essence

The essence of the 74ACT258PC lies in its ability to select one of four data inputs and route it to a single output line, based on the control inputs.

Packaging/Quantity

This IC is typically sold in reels or tubes, with quantities varying depending on the supplier.

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 6ns (max)
• Output Current: ±24mA

Detailed Pin Configuration

The 74ACT258PC has a total of 16 pins, each serving a specific function:

1. A0: Data Input A0
2. B0: Data Input B0
3. C0: Data Input C0
4. D0: Data Input D0
5. GND: Ground
6. Y: Multiplexer Output
7. E: Enable Input
8. A1: Data Input A1
9. B1: Data Input B1
10. C1: Data Input C1
11. D1: Data Input D1
12. VCC: Supply Voltage
13. Y: Multiplexer Output
14. E: Enable Input
15. A2: Data Input A2
16. B2: Data Input B2

Functional Features

• The 74ACT258PC offers four data inputs (A, B, C, and D) that can be selected using the control inputs (A0, A1, and A2).
• The enable input (E) allows the user to activate or deactivate the multiplexer.
• When enabled, the selected data input is routed to the output (Y), while the other inputs are disconnected.

Advantages and Disadvantages

Advantages

• High-speed performance makes it suitable for time-critical applications.
• Low power consumption helps conserve energy.
• Compatibility with TTL inputs allows for easy integration into existing systems.

Disadvantages

• Limited number of data inputs may restrict its use in complex multiplexing scenarios.
• Requires careful consideration of voltage levels to ensure proper operation.

Working Principles

The 74ACT258PC operates based on the principles of digital logic. By controlling the input selection lines (A0, A1, and A2) and enabling the IC (E), a specific data input can be connected to the output line (Y). This enables efficient data multiplexing in various electronic systems.

Detailed Application Field Plans

The 74ACT258PC finds application in numerous areas, including: - Data communication systems - Industrial automation - Instrumentation and measurement equipment - Consumer electronics - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that serve similar functions to the 74ACT258PC include: - 74HC258: A high-speed CMOS logic multiplexer with similar pin configuration. - CD4051: An analog multiplexer/demultiplexer IC that can also be used for digital signals. - SN74LS157: A quad 2-line to 1-line data selector/multiplexer.

In conclusion, the 74ACT258PC is a versatile integrated circuit that offers efficient data multiplexing capabilities. Its high-speed performance, low power consumption, and compatibility with TTL inputs make it suitable for various applications in digital electronics.