SN74HC251DRE4

Product Overview

Category

SN74HC251DRE4 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in digital multiplexing applications.

Characteristics

• High-speed operation
• Low power consumption
• Wide operating voltage range
• Compatibility with TTL inputs
• Schmitt-trigger action on all inputs
• Balanced propagation delays

Package

SN74HC251DRE4 is available in a small-outline package (SOIC) with 16 pins.

Essence

The essence of SN74HC251DRE4 lies in its ability to perform digital multiplexing functions efficiently and reliably.

Packaging/Quantity

This product is typically packaged in reels, with each reel containing a quantity of 2500 units.

Specifications

• Supply voltage: 2V to 6V
• Input voltage: 0V to VCC
• Output voltage: 0V to VCC
• Operating temperature range: -40°C to +85°C
• Maximum input current: ±1mA
• Maximum output current: ±25mA

Detailed Pin Configuration

1. A0: Multiplexer Address Input 0
2. A1: Multiplexer Address Input 1
3. GND: Ground
4. B: Multiplexer Data Input B
5. C: Multiplexer Data Input C
6. D: Multiplexer Data Input D
7. E: Multiplexer Data Input E
8. Y: Multiplexer Output
9. OE: Output Enable
10. VCC: Positive Power Supply
11. A2: Multiplexer Address Input 2
12. A3: Multiplexer Address Input 3
13. NC: No Connection
14. F: Multiplexer Data Input F
15. G: Multiplexer Data Input G
16. H: Multiplexer Data Input H

Functional Features

• 8-input multiplexer with common select inputs (A0-A3)
• Output enable (OE) pin for disabling the output
• Schmitt-trigger action on all inputs for noise immunity
• Balanced propagation delays ensure accurate data transmission
• Wide operating voltage range allows compatibility with various systems

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient data processing
• Low power consumption helps conserve energy
• Compatibility with TTL inputs simplifies integration into existing systems
• Schmitt-trigger action on all inputs provides noise immunity

Disadvantages

• Limited number of input channels (8 inputs)
• May require additional components for complex multiplexing applications

Working Principles

SN74HC251DRE4 operates as an 8-input multiplexer, allowing selection of one of the eight data inputs based on the address inputs (A0-A3). The selected data input is then routed to the output pin (Y). The output can be enabled or disabled using the output enable (OE) pin. The Schmitt-trigger action on all inputs ensures reliable operation in the presence of noise.

Detailed Application Field Plans

SN74HC251DRE4 finds application in various fields, including: 1. Digital communication systems 2. Data acquisition systems 3. Industrial automation 4. Consumer electronics 5. Automotive electronics

Detailed and Complete Alternative Models

1. CD74HC251E: Similar 8-input multiplexer IC from Texas Instruments
2. MC74HC251N: 8-input multiplexer IC from ON Semiconductor
3. 74HC251: General-purpose 8-input multiplexer IC from various manufacturers

These alternative models offer similar functionality and can be used as substitutes for SN74HC251DRE4 depending on specific requirements.

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