DM74ALS253N

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Multiplexer
• Characteristics: High-speed, TTL compatible, dual 4-input multiplexer
• Package: DIP (Dual In-line Package)
• Essence: The DM74ALS253N is a versatile logic multiplexer designed for high-speed digital applications.
• Packaging/Quantity: Available in tubes or reels, with varying quantities depending on the supplier.

Specifications

• Supply Voltage: 4.75V to 5.25V
• Input Voltage: 0V to VCC
• Operating Temperature: -55°C to +125°C
• Propagation Delay: 9ns (typical)
• Output Current: ±24mA
• Logic Family: Advanced Low-Power Schottky (ALS)

Pin Configuration

The DM74ALS253N has a total of 16 pins, which are assigned specific functions as follows:

1. A0: Input A0
2. A1: Input A1
3. A2: Input A2
4. A3: Input A3
5. B0: Input B0
6. B1: Input B1
7. B2: Input B2
8. B3: Input B3
9. GND: Ground
10. Y: Output Y
11. C: Control Input
12. VCC: Supply Voltage
13. D0: Input D0
14. D1: Input D1
15. D2: Input D2
16. D3: Input D3

Functional Features

• Dual 4-input multiplexer with common select inputs (A0-A3)
• Selectable control input (C) determines which set of inputs (D0-D3 or B0-B3) is routed to the output (Y)
• High-speed operation suitable for time-critical applications
• TTL compatible inputs and outputs for easy integration with other logic circuits
• Low power consumption due to Advanced Low-Power Schottky (ALS) technology

Advantages and Disadvantages

Advantages

• Versatile multiplexer suitable for various digital applications
• High-speed operation allows for efficient data routing
• TTL compatibility simplifies integration with other logic circuits
• Low power consumption helps reduce overall system energy requirements

Disadvantages

• Limited number of inputs may restrict certain complex applications
• Propagation delay of 9ns may be relatively high for some ultra-fast systems

Working Principles

The DM74ALS253N operates as a dual 4-input multiplexer, allowing the selection of one of two sets of inputs (D0-D3 or B0-B3) based on the control input (C). When C is low, the D inputs are selected, and when C is high, the B inputs are selected. The selected input is then routed to the output (Y).

Detailed Application Field Plans

The DM74ALS253N can be used in various applications, including:

1. Data routing and selection in microprocessors and digital systems
2. Address decoding in memory systems
3. Input/output (I/O) expansion in embedded systems
4. Multiplexing control signals in communication systems
5. Logic circuitry in industrial automation and control systems

Detailed and Complete Alternative Models

• SN74ALS253N: Similar functionality, but manufactured by Texas Instruments
• MC74ALS253N: Equivalent alternative from Motorola Semiconductor
• CD74ALS253N: Comparable device offered by National Semiconductor

These alternative models provide similar functionality and characteristics, offering flexibility in component selection based on availability and specific project requirements.

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