SN74AXC1T45DTQR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Signal Level Shifter
• Characteristics: Bi-directional voltage level translation with automatic direction sensing
• Package: 6-pin X2SON package
• Essence: Single-bit dual-supply bus transceiver
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.65V to 3.6V
• High-Level Input Voltage: 0.7 x VCC to VCC + 0.3V
• Low-Level Input Voltage: -0.3V to 0.3V
• High-Level Output Voltage: VCC - 0.3V
• Low-Level Output Voltage: 0.3V
• Maximum Continuous Output Current: ±50mA
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The SN74AXC1T45DTQR has the following pin configuration:

___________ | | 1 | | 6 |___________|

Pin 1: A/B Port Pin 2: VCCA Power Supply Pin 3: GND Ground Pin 4: OE Output Enable Pin 5: VCCB Power Supply Pin 6: Y/Z Port

Functional Features

• Bi-directional voltage level shifting between two different supply voltages
• Automatic direction sensing eliminates the need for a direction control signal
• Supports bidirectional data transfer between systems with different voltage levels
• Provides voltage translation for both push-pull and open-drain applications
• 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 signals - Supports bidirectional communication with minimal external components

Disadvantages: - Limited to single-bit data transmission - May not be suitable for applications requiring multi-bit data transfer

Working Principles

The SN74AXC1T45DTQR is a single-bit dual-supply bus transceiver that allows bi-directional voltage level translation between two different supply voltages. It automatically senses the direction of data flow and adjusts the voltage levels accordingly. This eliminates the need for an additional direction control signal, simplifying the interface between devices.

The device uses a combination of MOSFETs and level-shifting circuitry to achieve voltage translation. When the A/B port is transmitting data from a lower voltage system to a higher voltage system, the internal circuitry ensures that the output voltage levels meet the requirements of the higher voltage system. Similarly, when data is being transmitted in the opposite direction, the voltage levels are adjusted accordingly.

Detailed Application Field Plans

The SN74AXC1T45DTQR is commonly used in various applications where voltage level translation is required. Some of the specific application fields include:

1. IoT Devices: Facilitates communication between low-power sensors and microcontrollers operating at different voltage levels.
2. Mobile Devices: Enables data transfer between different subsystems, such as camera modules and main processors, which may operate at different voltage levels.
3. Industrial Automation: Allows interfacing between control systems and peripheral devices with varying voltage requirements.
4. Automotive Electronics: Supports communication between different automotive subsystems, such as infotainment systems and vehicle control units.

Detailed and Complete Alternative Models

1. SN74LVC1T45DCKR: Single-bit dual-supply bus transceiver with similar characteristics and package.
2. SN74HCT245N: Octal bus transceiver with 3-state outputs, suitable for multi-bit data transfer.
3. SN74LVCH16245ADGGR: 16-bit bus transceiver with voltage level translation capabilities.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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