CY74FCT543CTSOC

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Shifter
• Characteristics: High-speed, low-power consumption
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Logic level shifting between different voltage domains
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage: 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: 3.5ns (typical)
• Output Drive: ±24mA

Detailed Pin Configuration

1. OE (Output Enable)
2. A0 (Data Input A, LSB)
3. A1 (Data Input A)
4. A2 (Data Input A)
5. A3 (Data Input A)
6. A4 (Data Input A)
7. A5 (Data Input A)
8. GND (Ground)
9. B5 (Data Input B, MSB)
10. B4 (Data Input B)
11. B3 (Data Input B)
12. B2 (Data Input B)
13. B1 (Data Input B)
14. B0 (Data Input B)
15. VCC (Supply Voltage)
16. Y0 (Data Output Y, LSB)
17. Y1 (Data Output Y)
18. Y2 (Data Output Y)
19. Y3 (Data Output Y)
20. Y4 (Data Output Y)
21. Y5 (Data Output Y)
22. NC (No Connection)

Functional Features

• Bidirectional logic level shifting between two voltage domains
• Supports voltage translation from 5V to 3.3V and vice versa
• High-speed operation with low propagation delay
• Low power consumption
• Output drive capability for driving capacitive loads

Advantages

• Enables seamless interfacing between different voltage levels in a system
• Provides reliable and efficient logic level shifting
• Wide operating temperature range allows usage in various environments
• Compact SOIC package saves board space
• High-speed operation enhances overall system performance

Disadvantages

• Limited to specific voltage translation scenarios (5V to 3.3V and vice versa)
• Not suitable for applications requiring higher voltage translations
• May require additional components for more complex level shifting requirements

Working Principles

The CY74FCT543CTSOC is designed to shift logic levels between two voltage domains. It utilizes a bidirectional architecture, allowing data transmission in both directions. The inputs (A0-A5) are connected to one voltage domain, while the outputs (Y0-Y5) are connected to the other voltage domain. The OE pin controls the direction of data flow.

When OE is high, the device is enabled, and data can be transmitted from inputs A to outputs Y. When OE is low, the device is disabled, and the outputs are in a high-impedance state, isolating them from the inputs.

The CY74FCT543CTSOC operates by using internal circuitry to detect the input voltage levels and translate them to the corresponding output voltage levels. This ensures proper logic level compatibility between the two voltage domains.

Detailed Application Field Plans

1. Microcontroller interfacing: The CY74FCT543CTSOC can be used to interface microcontrollers operating at different voltage levels, enabling seamless communication between them.
2. Mixed-voltage systems: It finds application in systems where different components or subsystems operate at different voltage levels, ensuring proper signal compatibility.
3. Level shifting in communication interfaces: It can be used in various communication interfaces, such as UART, SPI, or I2C, to enable communication between devices operating at different voltage levels.

Detailed and Complete Alternative Models

1. SN74LVC1T45DBVR: Unidirectional level shifter with similar characteristics, suitable for voltage translation between 3.3V and 5V domains.
2. TXB0108PWR: Bidirectional level shifter supporting voltage translation between multiple voltage domains, including 1.8V, 2.5V, 3.3V, and 5V.

(Note: The above alternative models are provided for reference and may have different specifications and pin configurations. Please refer to their respective datasheets for detailed information.)

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