SN74AVC1T45DCKR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter
• Characteristics: Bi-directional voltage level translator with automatic direction sensing
• Package: SC-70 (6-pin)
• Essence: Single-bit dual-supply bus transceiver
• Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

• Supply Voltage Range: 1.65V to 3.6V
• High-Level Input Voltage: 2.3V to VCCA + 0.5V
• Low-Level Input Voltage: -0.5V to 0.8V
• High-Level Output Voltage: VCCB - 0.4V to VCCB
• Low-Level Output Voltage: 0V to 0.4V
• Maximum Data Rate: 100 Mbps
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The SN74AVC1T45DCKR has a total of six pins:

1. VCCA: Positive supply voltage for A-side logic
2. A1: Input/output pin for A-side logic
3. GND: Ground reference
4. B1: Input/output pin for B-side logic
5. VCCB: Positive supply voltage for B-side logic
6. OE: Output enable input

Functional Features

• Bi-directional voltage level translation between two independent power supply rails
• Automatic direction sensing eliminates the need for a direction control signal
• Supports bidirectional data transfer between different voltage domains
• Provides voltage level shifting without the need for external pull-up or pull-down resistors
• Low power consumption and high-speed operation

Advantages and Disadvantages

Advantages: - Simplifies interfacing between devices operating at different voltage levels - Automatic direction sensing reduces the complexity of control circuitry - Eliminates the need for external resistors, saving board space and cost - Low power consumption enhances battery life in portable applications

Disadvantages: - Limited to single-bit data transmission - Maximum data rate may not be sufficient for high-speed applications - Operating temperature range may not be suitable for extreme environments

Working Principles

The SN74AVC1T45DCKR is a level shifter that allows bidirectional voltage translation between two independent power supply rails. It utilizes a built-in automatic direction sensing feature, which eliminates the need for an additional control signal to determine the direction of data flow.

When the voltage on the A-side logic is higher than the B-side logic, the device acts as a translator from A to B. Conversely, when the voltage on the B-side logic is higher, it translates from B to A. The OE (Output Enable) pin controls the output state of the device.

Detailed Application Field Plans

The SN74AVC1T45DCKR is commonly used in various applications where voltage level translation is required. Some specific application fields include:

1. Portable Electronics: Enables communication between low-voltage microcontrollers and higher-voltage peripherals.
2. Industrial Automation: Facilitates data exchange between different voltage domains in industrial control systems.
3. Automotive Electronics: Allows interfacing between automotive sensors and microcontrollers operating at different voltage levels.
4. Communication Systems: Enables voltage level translation in communication interfaces such as UART, SPI, and I2C.

Detailed and Complete Alternative Models

1. TXB0101: Single-bit bidirectional voltage-level translator with automatic direction sensing. Supports up to 24 Mbps data rate.
2. PCA9306: Dual bidirectional I2C-bus and SMBus voltage-level translator. Supports up to 400 kHz clock frequency.
3. SN74LVC1T45: Single-bit dual-supply bus transceiver with configurable voltage translation and direction control.

These alternative models offer similar functionality to the SN74AVC1T45DCKR and can be considered as alternatives based on specific application requirements.

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