74LVC245APW-Q100J

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter/Transceiver
• Characteristics: Low-voltage CMOS Octal Bus Transceiver with 3-State Outputs
• Package: TSSOP-20
• Essence: This IC is designed to shift logic levels and provide bidirectional voltage translation between different voltage domains.
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• High-Level Input Voltage: 2V to VCC + 0.5V
• Low-Level Input Voltage: -0.5V to 0.8V
• High-Level Output Voltage: VCC - 0.5V
• Low-Level Output Voltage: 0.5V
• Maximum Operating Frequency: 400 MHz
• Number of Channels: 8
• Output Type: 3-State

Detailed Pin Configuration

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

Functional Features

• Bidirectional voltage translation between different voltage domains.
• 3-state outputs allow multiple devices to share a common bus.
• Output enable input for disabling the outputs.
• Low-voltage CMOS technology provides low power consumption.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems. - High-speed operation up to 400 MHz enables efficient data transfer. - 3-state outputs facilitate bus sharing among multiple devices. - Low power consumption is ideal for battery-powered applications.

Disadvantages: - Limited number of channels (8) may not be sufficient for complex systems requiring more connections. - TSSOP package may require careful handling during assembly.

Working Principles

The 74LVC245APW-Q100J operates by shifting logic levels between two voltage domains. It uses a combination of MOSFETs and CMOS technology to achieve bidirectional voltage translation. The direction of data flow is controlled by the DIR pin. When the DIR pin is set to a specific logic level, the corresponding data inputs/outputs are connected to the appropriate voltage domain. The OE pin can be used to disable the outputs, putting them in a high-impedance state.

Detailed Application Field Plans

The 74LVC245APW-Q100J is commonly used in various applications where voltage translation is required. Some typical application fields include: 1. Communication systems: Used for level shifting between different voltage domains in serial communication interfaces such as UART, SPI, and I2C. 2. Microcontroller interfacing: Facilitates communication between microcontrollers operating at different voltage levels. 3. Battery-powered devices: Enables voltage translation in portable electronics, ensuring compatibility between low-power components. 4. Industrial automation: Used in control systems to interface between different voltage levels of sensors, actuators, and controllers.

Detailed and Complete Alternative Models

1. SN74LVC245APW - Similar functionality and pin configuration, but not automotive-grade.
2. 74HC245PW-Q100J - Higher voltage range (2V to 6V) but lacks the low-voltage characteristics of the 74LVC245APW-Q100J.
3. CD74HCT245E - Compatible pin configuration but operates at higher voltages (4.5V to 5.5V).

(Note: The alternative models mentioned above are just a few examples and not an exhaustive list.)

This entry provides comprehensive information about the 74LVC245APW-Q100J, including its product details, specifications, pin configuration, functional features, advantages, disadvantages, working principles, application field plans, and alternative models.