SN74F253NSR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Multiplexer/Demultiplexer
• Characteristics: High-speed, low-power consumption
• Package: SOP (Small Outline Package)
• Essence: Dual 4-to-1 Data Selector/Multiplexer with 3-State Outputs
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 4.5V to 5.5V
• Input Voltage: 0V to VCC
• Output Voltage: 0V to VCC
• Operating Temperature: -40°C to +85°C
• Propagation Delay: 7ns (typical)
• Output Current: ±24mA
• Input Capacitance: 3pF
• Output Capacitance: 6pF

Pin Configuration

The SN74F253NSR has a total of 16 pins, which are assigned as follows:

1. A0 (Data Input A0)
2. B0 (Data Input B0)
3. A1 (Data Input A1)
4. B1 (Data Input B1)
5. GND (Ground)
6. Y0 (Multiplexer Output Y0)
7. Y1 (Multiplexer Output Y1)
8. Y2 (Multiplexer Output Y2)
9. Y3 (Multiplexer Output Y3)
10. S (Select Input)
11. E (Enable Input)
12. VCC (Positive Power Supply)
13. B3 (Data Input B3)
14. A3 (Data Input A3)
15. B2 (Data Input B2)
16. A2 (Data Input A2)

Functional Features

• Dual 4-to-1 data selector/multiplexer
• 3-state outputs for bus-oriented applications
• High-speed operation
• Low-power consumption
• Wide operating voltage range
• Schmitt-trigger inputs for noise immunity

Advantages and Disadvantages

Advantages

• Allows selection of two sets of four data inputs
• Provides a single output based on the select input
• Suitable for bus switching applications
• Offers high-speed performance
• Low power consumption makes it energy-efficient

Disadvantages

• Limited to 4-bit data inputs
• Requires external enable and select signals for proper operation
• Not suitable for complex multiplexing applications

Working Principles

The SN74F253NSR is a dual 4-to-1 data selector/multiplexer IC. It allows the user to choose between two sets of four data inputs (A0-A3 and B0-B3) using the select input (S). The selected data is then routed to one of the four outputs (Y0-Y3) based on the select input.

The enable input (E) controls the output state. When E is low, the outputs are in a high-impedance state, allowing multiple devices to be connected to the same bus without interference. When E is high, the outputs reflect the selected data.

The IC operates within a wide supply voltage range and provides high-speed performance with low power consumption. The Schmitt-trigger inputs ensure noise immunity, making it suitable for reliable digital signal processing.

Detailed Application Field Plans

The SN74F253NSR is commonly used in various digital systems and applications, including:

1. Data multiplexing in microcontrollers and microprocessors
2. Address decoding in memory systems
3. Bus switching in computer architectures
4. Signal routing in communication systems
5. Input/output expansion in embedded systems
6. Logic circuit design and prototyping

Detailed and Complete Alternative Models

1. CD74HC253E: Dual 4-to-1 Data Selector/Multiplexer, DIP package
2. MC74HC253N: Dual 4-to-1 Data Selector/Multiplexer, DIP package
3. SN74LS253N: Dual 4-to-1 Data Selector/Multiplexer, DIP package
4. CD4053BE: Triple 2-channel Analog Multiplexer/Demultiplexer, DIP package
5. 74HC151N: 8-to-1 Data Selector/Multiplexer, DIP package

These alternative models offer similar functionality and can be used as substitutes for the SN74F253NSR in various applications.

In conclusion, the SN74F253NSR is a versatile logic multiplexer/demultiplexer IC that provides high-speed performance and low-power consumption. Its dual 4-to-1 data selection capability, along with 3-state outputs, makes it suitable for a wide range of digital systems and applications.