CY74FCT257TQCT

Product Overview

• Category: Integrated Circuit (IC)
• Use: Data Selector/Multiplexer
• Characteristics: High-speed, low-power consumption
• Package: TQFP (Thin Quad Flat Pack)
• Essence: Logic device for data selection and multiplexing
• 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 Range: -40°C to +85°C
• Propagation Delay: 3.5ns (typical)
• Input Capacitance: 4pF (typical)
• Output Capacitance: 6pF (typical)

Detailed Pin Configuration

The CY74FCT257TQCT has a total of 16 pins, which are assigned as follows:

1. A0: Data input A0
2. A1: Data input A1
3. A2: Data input A2
4. A3: Data input A3
5. G: Enable input (active LOW)
6. Y: Multiplexed output
7. B: Data input B
8. C: Data input C
9. D: Data input D
10. OE: Output enable input (active LOW)
11. Y: Multiplexed output
12. B0: Data input B0
13. B1: Data input B1
14. B2: Data input B2
15. B3: Data input B3
16. VCC: Power supply

Functional Features

• 4-bit data selection/multiplexing
• Two independent 2-to-1 multiplexers
• High-speed operation
• Low power consumption
• TTL-compatible inputs and outputs
• Output enable control for multiplexed output

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data selection and multiplexing. - Low power consumption makes it suitable for battery-powered devices. - TTL-compatible inputs and outputs ensure compatibility with a wide range of systems.

Disadvantages: - Limited to 4-bit data selection/multiplexing, may not be suitable for applications requiring higher bit counts. - The TQFP package may require additional care during soldering due to its small size.

Working Principles

The CY74FCT257TQCT is designed to select and multiplex data from two independent sources. It operates based on the input signals provided to the data inputs (A0-A3, B0-B3) and the control inputs (G, OE). When the enable input (G) is LOW, the selected data from either source is passed through to the multiplexed output (Y). The output enable input (OE) controls whether the multiplexed output is active or in a high-impedance state.

Detailed Application Field Plans

The CY74FCT257TQCT can be used in various applications that require data selection and multiplexing, such as:

1. Data routing in communication systems
2. Address decoding in memory systems
3. Input/output (I/O) expansion in microcontrollers
4. Signal switching in test and measurement equipment
5. Multiplexing control signals in industrial automation systems

Detailed and Complete Alternative Models

1. SN74FCT257TQCT: Similar functionality and specifications, offered by Texas Instruments.
2. MC74FCT257TQCT: Equivalent device manufactured by ON Semiconductor.
3. CD74FCT257TQCT: Alternative option from Texas Instruments with comparable features.

(Note: The above alternative models are provided for reference and may have slight variations in specifications. It is recommended to consult the respective datasheets for detailed information.)

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