SN74LVC1T45DBVRG4

Product Overview

• Category: Integrated Circuit
• Use: Level Shifter/Translator
• Characteristics: Bi-directional, Single-bit, Voltage-level translation
• Package: SOT-23 (Thin Shrink Small Outline Package)
• Essence: Translates signals between different voltage levels
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• Input Voltage Range (VREF): -0.5V to VCC + 0.5V
• Output Voltage Range (A/B Ports): 0V to VCC
• Maximum Input Current (II): ±20mA
• Maximum Output Current (IO): ±32mA
• Propagation Delay (tpd): 3.8ns (Max) at 3.3V
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74LVC1T45DBVRG4 has a total of six pins:

1. VCC: Power supply pin (+1.65V to +5.5V)
2. GND: Ground reference pin
3. A Port: Input/output port for signal translation
4. B Port: Input/output port for signal translation
5. OE: Output enable control pin
6. DIR: Direction control pin

Functional Features

• Bi-directional level shifting: Allows bidirectional voltage translation between two different voltage domains.
• Wide voltage range: Supports voltage translation from 1.65V to 5.5V, making it compatible with various logic families.
• Low power consumption: Operates at low power levels, making it suitable for battery-powered applications.
• Fast switching speed: Provides quick signal translation with a propagation delay of only 3.8ns at 3.3V.
• ESD protection: Incorporates built-in electrostatic discharge (ESD) protection, ensuring robustness against static electricity.

Advantages and Disadvantages

Advantages

• Compact package size: The SOT-23 package offers a small footprint, saving board space in compact designs.
• Easy integration: Single-bit level shifting simplifies the design and integration process.
• Wide operating temperature range: Can operate reliably in extreme temperature conditions (-40°C to +85°C).
• High-speed performance: Fast propagation delay enables efficient signal translation in time-critical applications.

Disadvantages

• Limited voltage range: Not suitable for voltage translation beyond the specified range of 1.65V to 5.5V.
• Single-bit capacity: Can only translate one bit at a time, limiting its use in multi-bit data transmission.

Working Principles

The SN74LVC1T45DBVRG4 is a voltage-level translator that allows bidirectional signal translation between two different voltage domains. It utilizes a combination of MOSFETs and control logic to achieve this functionality. The DIR pin controls the direction of translation, while the OE pin enables or disables the output. When the DIR pin is set to logic high, the A port translates signals from the lower voltage domain to the higher voltage domain. Conversely, when the DIR pin is set to logic low, the B port translates signals from the higher voltage domain to the lower voltage domain.

Detailed Application Field Plans

The SN74LVC1T45DBVRG4 finds applications in various fields, including:

1. IoT Devices: Enables communication between low-voltage microcontrollers and higher-voltage sensors or actuators.
2. Mobile Devices: Facilitates level shifting between different voltage domains in smartphones and tablets.
3. Industrial Automation: Allows interfacing between different logic families used in industrial control systems.
4. Automotive Electronics: Supports voltage translation in automotive applications, such as CAN bus communication.

Detailed and Complete Alternative Models

1. SN74LVC1T45DCKR: Similar functionality but in a smaller SC-70 package.
2. SN74LVC1T45YZPR: Provides the same features but comes in a DSBGA package for space-constrained designs.
3. SN74LVC1T45QDBVRQ1: Automotive-grade version with enhanced ESD protection and wider temperature range.

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