Encyclopedia Entry: 74VHC245BQ,115

Product Information Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifting and Bus Transceiver
• Characteristics: High-Speed CMOS Logic, Octal Bus Transceiver, 3-State Outputs
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: The 74VHC245BQ,115 is a high-performance octal bus transceiver designed for level shifting and signal transmission between different voltage domains.
• Packaging/Quantity: Available in reels with 2500 units per reel.

Specifications

• Supply Voltage Range: 2.0V to 5.5V
• High-Level Input Voltage: 2.0V to VCC
• Low-Level Input Voltage: GND to 0.8V
• High-Level Output Voltage: VCC - 0.4V
• Low-Level Output Voltage: 0.4V
• Maximum Operating Frequency: 200MHz
• Propagation Delay Time: 3.5ns (typical)

Detailed Pin Configuration

The 74VHC245BQ,115 IC has a total of 20 pins, which are divided into two groups: - Group A (Input/Output Pins): Pins 1, 2, 3, 4, 19, 18, 17, 16 - Group B (Direction Control Pins): Pins 5, 6, 7, 8, 9, 10, 11, 12 - Other Pins: VCC (Pin 20), GND (Pin 13), OE (Output Enable) (Pin 15), DIR (Direction Control) (Pin 14)

Functional Features

• Bidirectional Data Transfer: Allows data transmission in both directions.
• 3-State Outputs: Provides a high-impedance state when the output is disabled, allowing multiple devices to share a common bus.
• Level Shifting: Enables signal translation between different voltage domains, ensuring compatibility between systems operating at different voltage levels.

Advantages and Disadvantages

Advantages: - High-Speed Operation: Supports fast data transfer rates up to 200MHz. - Wide Supply Voltage Range: Can operate with supply voltages ranging from 2.0V to 5.5V. - Low Power Consumption: Consumes minimal power during operation. - Small Package Size: The TSSOP package allows for space-efficient integration into electronic circuits.

Disadvantages: - Limited Output Current: The maximum output current may not be sufficient for certain applications requiring high current drive capabilities. - Sensitivity to Noise: As with any CMOS device, the 74VHC245BQ,115 is susceptible to noise interference, which may affect its performance in noisy environments.

Working Principles

The 74VHC245BQ,115 operates based on CMOS (Complementary Metal-Oxide-Semiconductor) technology. It utilizes a combination of MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors) to achieve bidirectional data transmission and level shifting functionality. The direction control pins (DIR) determine the direction of data flow, while the output enable pin (OE) enables or disables the outputs.

Detailed Application Field Plans

The 74VHC245BQ,115 is commonly used in various applications, including but not limited to: 1. Microcontroller Interfacing: Facilitates communication between microcontrollers operating at different voltage levels. 2. Data Communication Systems: Enables level shifting and signal transmission in serial and parallel communication interfaces. 3. Industrial Automation: Used in control systems to interface between different voltage domains. 4. Automotive Electronics: Provides level shifting capabilities in automotive communication networks. 5. Consumer Electronics: Used in devices requiring voltage level translation, such as smartphones, tablets, and gaming consoles.

Detailed and Complete Alternative Models

• SN74LVC245A: Low-Voltage Octal Bus Transceiver with 3-State Outputs
• CD74HCT245: High-Speed CMOS Logic Octal Bus Transceiver
• MC74VHC245: Octal Bus Transceiver with 3-State Outputs

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

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