74AHC245PW,112

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level shifting and signal buffering
• Characteristics: High-speed, low-power, bidirectional voltage level translator
• Package: TSSOP-20
• Essence: Transceiver
• Packaging/Quantity: Tape and reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2 V to 5.5 V
• Input Voltage Range: 0 V to VCC
• Output Voltage Range: 0 V to VCC
• High-Level Input Voltage: 0.7 x VCC to VCC + 0.3 V
• Low-Level Input Voltage: -0.3 V to 0.3 x VCC
• High-Level Output Voltage: 0.9 x VCC to VCC
• Low-Level Output Voltage: 0 V to 0.1 x VCC
• Maximum Operating Frequency: 200 MHz
• Number of Channels: 8

Pin Configuration

The 74AHC245PW,112 has a total of 20 pins arranged as follows:

___________ OE --| |-- VCC A1 --| |-- B1 A2 --| |-- B2 A3 --| |-- B3 A4 --| |-- B4 A5 --| |-- B5 A6 --| |-- B6 A7 --| |-- B7 GND --| |-- B8 |___________|

Functional Features

• Bidirectional voltage level translation between two independent voltage domains
• Non-inverting level shifting
• 3-state outputs for bus-oriented applications
• High-speed operation with low power consumption
• Schmitt-trigger action on all inputs for improved noise immunity

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data transfer - Low-power consumption helps in reducing energy usage - Bidirectional capability simplifies circuit design - Schmitt-trigger action enhances noise immunity

Disadvantages: - Limited voltage range (2 V to 5.5 V) - Maximum operating frequency may not be sufficient for some high-speed applications

Working Principles

The 74AHC245PW,112 is a bidirectional level shifter that allows for voltage translation between two independent voltage domains. It operates by receiving input signals from one domain and translating them to the appropriate voltage levels of the other domain. The device uses non-inverting buffers to achieve this bidirectional functionality.

Detailed Application Field Plans

The 74AHC245PW,112 can be used in various applications, including but not limited to:

1. Communication systems: It can be utilized for level shifting in serial communication interfaces such as UART, SPI, and I2C.
2. Microcontroller interfacing: The IC enables communication between microcontrollers operating at different voltage levels.
3. Bus-oriented systems: It can be employed in bus architectures where multiple devices share a common data bus.

Detailed and Complete Alternative Models

Some alternative models that provide similar functionality to the 74AHC245PW,112 include:

1. SN74LVC245A: This IC offers bidirectional voltage level translation with a wider supply voltage range.
2. CD4504B: It provides level shifting capabilities along with additional features like open-drain outputs.

These alternative models can be considered based on specific requirements and compatibility with the target application.

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