SN74HC245PWG4

Product Overview

• Category: Integrated Circuit
• Use: Level Shifter and Bus Transceiver
• Characteristics: High-Speed, Non-Inverting, 3-State
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Transfers Data Between Two Independent Buses
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 57 MHz
• Number of Channels: 8
• Logic Family: HC
• Logic Type: CMOS
• Output Type: 3-State
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

1. A1: Channel A Data Input/Output 1
2. A2: Channel A Data Input/Output 2
3. A3: Channel A Data Input/Output 3
4. A4: Channel A Data Input/Output 4
5. A5: Channel A Data Input/Output 5
6. A6: Channel A Data Input/Output 6
7. A7: Channel A Data Input/Output 7
8. A8: Channel A Data Input/Output 8
9. GND: Ground
10. B8: Channel B Data Input/Output 8
11. B7: Channel B Data Input/Output 7
12. B6: Channel B Data Input/Output 6
13. B5: Channel B Data Input/Output 5
14. B4: Channel B Data Input/Output 4
15. B3: Channel B Data Input/Output 3
16. B2: Channel B Data Input/Output 2
17. B1: Channel B Data Input/Output 1
18. OE: Output Enable Input
19. VCC: Positive Supply Voltage

Functional Features

• Bidirectional Data Transfer: Allows data to be transferred between two independent buses.
• Non-Inverting Logic: Preserves the logical state of the input signal during transmission.
• 3-State Outputs: Provides a high-impedance state when the output is disabled, allowing multiple devices to share the same bus.

Advantages and Disadvantages

Advantages: - High-Speed Operation: Supports fast data transfer rates up to 57 MHz. - Wide Operating Voltage Range: Can operate with supply voltages ranging from 2V to 6V. - Compact Package: The TSSOP package offers a small footprint, making it suitable for space-constrained applications.

Disadvantages: - Limited Number of Channels: Only provides 8 channels for data transfer. - Temperature Limitations: Operating temperature range is limited to -40°C to +85°C.

Working Principles

The SN74HC245PWG4 is a level shifter and bus transceiver integrated circuit. It allows bidirectional data transfer between two independent buses while preserving the logical state of the input signal. The device features non-inverting logic, ensuring that the output signal matches the input signal. When the output enable (OE) input is low, the outputs are enabled and actively drive the bus lines. Conversely, when OE is high, the outputs enter a high-impedance state, effectively disconnecting them from the bus.

Detailed Application Field Plans

The SN74HC245PWG4 is commonly used in various applications, including:

1. Microcontroller Interfacing: It facilitates communication between microcontrollers operating at different voltage levels.
2. Data Acquisition Systems: Enables data transfer between sensors and microcontrollers.
3. Industrial Automation: Used for interfacing different modules in industrial control systems.
4. Communication Systems: Facilitates data exchange between different communication interfaces, such as UART, SPI, and I2C.
5. Automotive Electronics: Enables communication between various electronic components in automotive systems.

Detailed and Complete Alternative Models

1. SN74HCT245PW: Similar to SN74HC245PWG4 but operates at a wider temperature range (-55°C to +125°C).
2. SN74LVC245APW: Low-voltage version of the SN74HC245PWG4, operating at 1.65V to 5.5V.
3. SN74LVCH245APW: Low-voltage CMOS version with higher speed and lower power consumption.

These alternative models offer similar functionality to the SN74HC245PWG4 but may have variations in operating voltage, temperature range, or other specifications.

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