SN74HC253NSR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Multiplexer/Demultiplexer
• Characteristics: High-speed, Dual 4-to-1 Data Selector/Multiplexer with 3-State Outputs
• Package: SOP (Small Outline Package)
• Essence: The SN74HC253NSR is a versatile IC that can be used as a data selector or multiplexer. It allows the user to select one of four input data lines and route it to the output line based on the control inputs.
• Packaging/Quantity: The SN74HC253NSR is typically sold in reels containing 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
• Propagation Delay: 12 ns (typical)
• Output Current: ±25mA

Pin Configuration

The SN74HC253NSR has a total of 16 pins. The pin configuration is as follows:

+---+--+---+ A1 -|1 +--+ 16|- VCC B1 -|2 15|- GND C1 -|3 14|- Y1 D1 -|4 13|- Y2 S1 -|5 12|- S0 S2 -|6 11|- Y3 A2 -|7 10|- Y4 B2 -|8 9|- OE# +----------+

Functional Features

• Dual 4-to-1 data selector/multiplexer
• 3-state outputs for easy interfacing with other devices
• Low power consumption
• High-speed operation
• Wide operating voltage range

Advantages and Disadvantages

Advantages: - Versatile functionality as both a data selector and multiplexer - Easy integration with other devices due to 3-state outputs - Low power consumption helps in energy-efficient designs - High-speed operation allows for quick data selection

Disadvantages: - Limited number of input lines (4) - May not be suitable for applications requiring more complex multiplexing capabilities

Working Principles

The SN74HC253NSR operates based on the control inputs S1 and S0. These inputs determine which of the four input data lines (A1, B1, C1, D1) is selected and routed to the output lines (Y1, Y2, Y3, Y4). The OE# (Output Enable) pin controls the output state, allowing the user to disable the outputs when needed.

Detailed Application Field Plans

The SN74HC253NSR can be used in various applications, including but not limited to:

1. Data routing in digital systems
2. Multiplexing multiple data sources into a single output
3. Selecting between different data inputs based on control signals
4. Address decoding in memory systems
5. Interface switching in communication systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the SN74HC253NSR include:

1. CD74HC253E: Dual 4-to-1 Data Selector/Multiplexer with 3-State Outputs
2. MC74HC253N: Dual 4-to-1 Data Selector/Multiplexer with 3-State Outputs
3. SN54HC253J: Dual 4-to-1 Data Selector/Multiplexer with 3-State Outputs

These alternatives can be considered based on specific requirements and availability.

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