CY74FCT257CTQCT

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital multiplexer
• Characteristics: High-speed, low-power consumption
• Package: 16-pin TSSOP (Thin Shrink Small Outline Package)
• Essence: Multiplexing data inputs to a single output
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Logic Family: FCT
• Number of Inputs: 4
• Number of Outputs: 1
• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to Vcc
• Output Voltage Range: 0V to Vcc
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 3.5ns (typical)
• Power Dissipation: 8mW (typical)

Pin Configuration

The CY74FCT257CTQCT has a total of 16 pins, which are assigned as follows:

1. A0 - Data Input 0
2. A1 - Data Input 1
3. A2 - Data Input 2
4. A3 - Data Input 3
5. G - Enable Input
6. Y - Multiplexed Output
7. B - Output Enable Input
8. Vcc - Positive Power Supply
9. B3 - Output Enable Input
10. B2 - Data Input 3
11. B1 - Data Input 2
12. B0 - Data Input 1
13. Y - Multiplexed Output
14. G - Enable Input
15. A3 - Data Input 3
16. A2 - Data Input 2

Functional Features

• The CY74FCT257CTQCT is a quad 2-input multiplexer with output enable control.
• It allows the selection of one of the four data inputs to be routed to a single output.
• The output enable input (G) controls the state of the multiplexed output (Y).
• When the output enable is low, the selected input is transmitted to the output.
• When the output enable is high, the output is in a high-impedance state.

Advantages and Disadvantages

Advantages: - High-speed operation - Low power consumption - Compact package size - Wide operating temperature range

Disadvantages: - Limited number of inputs and outputs - Requires external components for complete functionality

Working Principles

The CY74FCT257CTQCT operates based on the principles of digital multiplexing. It uses logic gates and control signals to select one of the multiple data inputs and route it to the output. The output enable control allows the user to enable or disable the output as needed. The IC operates within a specified voltage range and has a fast propagation delay time, making it suitable for high-speed digital applications.

Detailed Application Field Plans

The CY74FCT257CTQCT can be used in various applications, including but not limited to:

1. Data communication systems: Multiplexing different data streams onto a single transmission line.
2. Digital signal processing: Selecting specific data inputs for further processing.
3. Memory systems: Routing data from multiple memory modules to a common bus.
4. Industrial automation: Controlling the selection of different sensors or actuators.
5. Test and measurement equipment: Switching between different test signals for analysis.

Detailed and Complete Alternative Models

1. SN74FCT257TQCT - Similar quad 2-input multiplexer with output enable control, available in TSSOP package.
2. CD74FCT257M - Quad 2-input multiplexer with output enable control, available in SOIC package.
3. MC74FCT257N - Quad 2-input multiplexer with output enable control, available in DIP package.

These alternative models offer similar functionality and can be used as replacements for the CY74FCT257CTQCT depending on specific requirements and availability.

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