Encyclopedia Entry: 74AC253PC

Product Overview

Category

The 74AC253PC belongs to the category of integrated circuits (ICs) and specifically falls under the family of digital multiplexers.

Use

This product is primarily used in digital electronics for data selection and routing purposes. It allows multiple input signals to be selectively routed to a single output line, based on control inputs.

Characteristics

• The 74AC253PC is a dual 4-input multiplexer with common select inputs.
• It operates on a supply voltage range of 2V to 6V.
• This IC offers high-speed operation and low power consumption.
• It is designed to be compatible with both TTL and CMOS logic families.

Package

The 74AC253PC is available in a 16-pin DIP (Dual In-line Package) format. The package provides physical protection and facilitates easy integration into electronic circuits.

Essence

The essence of the 74AC253PC lies in its ability to efficiently route and select data signals, enabling effective data management and control within digital systems.

Packaging/Quantity

The 74AC253PC is typically sold in reels or tubes, containing a quantity of 25 individual units per package.

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage High (VIH): 2V to VCC
• Input Voltage Low (VIL): GND to 0.8V
• Output Voltage High (VOH): VCC - 0.5V
• Output Voltage Low (VOL): 0.5V
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 7 ns (max)
• Power Dissipation: 500 mW (max)

Detailed Pin Configuration

The 74AC253PC has a total of 16 pins, each serving a specific purpose. The pin configuration is as follows:

1. Select Input B (S1B)
2. Data Input D0 (D0)
3. Data Input D1 (D1)
4. Data Input D2 (D2)
5. Data Input D3 (D3)
6. Ground (GND)
7. Output Y (Y)
8. Output Enable (OE)
9. Select Input A (S0A)
10. Data Input D4 (D4)
11. Data Input D5 (D5)
12. Data Input D6 (D6)
13. Data Input D7 (D7)
14. VCC (+5V)
15. Select Input C (S2C)
16. Select Input D (S3D)

Functional Features

• Dual 4-input multiplexer with common select inputs.
• High-speed operation allows for efficient data routing.
• Low power consumption ensures energy efficiency.
• Compatible with both TTL and CMOS logic families, providing versatility in circuit design.

Advantages and Disadvantages

Advantages

• Versatile and flexible data selection capabilities.
• High-speed operation enhances overall system performance.
• Low power consumption contributes to energy-efficient designs.
• Compatibility with multiple logic families simplifies integration into existing circuits.

Disadvantages

• Limited number of input channels may restrict certain applications requiring more extensive data routing.
• Propagation delay time may introduce timing issues in highly time-sensitive systems.

Working Principles

The 74AC253PC operates based on the principle of digital multiplexing. It uses the select inputs (S0A, S1B, S2C, S3D) to determine which data inputs (D0-D7) are routed to the output (Y). By manipulating the select inputs, different combinations of data inputs can be selected and transmitted to the output line.

Detailed Application Field Plans

The 74AC253PC finds applications in various digital systems, including but not limited to: - Data communication systems - Multiplexing and demultiplexing circuits - Address decoding circuits - Data routing and selection modules - Control and signal routing units

Detailed and Complete Alternative Models

1. 74HC253: Similar functionality with a wider supply voltage range (2V to 6V).
2. CD74AC253: Compatible alternative with improved noise immunity.
3. SN74AC253: Equivalent IC from Texas Instruments, offering similar features and performance.

These alternative models provide similar functionality to the 74AC253PC, allowing users to choose based on specific requirements and availability.

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