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SN74AVC4T245RGYR

TISN74AVC4T245RGYR

Texas Instruments
Translation Transceiver 2 Element 2 Bit per Element 3-State Output 16-VQFN (4x3.5)
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Overview

The SN74AVC4T245RGYR is a 4-bit non-inverting bus transceiver that uses two separate configurable power-supply rails to enable asynchronous communication between different voltage nodes. It is designed for bidirectional voltage level translation from 1.2V to 3.6V, making it ideal for interfacing modern low-voltage processors with higher-voltage legacy peripherals.

Why Choose This Part

This transceiver features dual-supply rails (VCCA and VCCB) that support a wide range of 1.2V to 3.6V translation. It includes Ioff circuitry for partial power-down protection and high ESD robustness, including 8000V Human-Body Model protection, ensuring reliability in sensitive electronic environments.

Applications

Mixed-Voltage Logic Interfacing
Bridging low-voltage application processors (1.2V or 1.8V) with 3.3V sensors, displays, or communication modules.
Mobile and Battery-Powered Systems
Utilizing the partial power-down (Ioff) feature to prevent backflow current when the device is powered off, preserving battery life.
Bus-Isolation
Using the 3-state outputs to isolate segments of a data bus during power-down or standby modes.

Key Specifications

Logic Type Translation Transceiver
Output Type 3-State
Mounting Type Surface Mount
Package / Case 16-VFQFN Exposed Pad
Voltage - Supply 1.2V ~ 3.6V
Number of Elements 2
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 16-VQFN (4x3.5)
Current - Output High, Low 12mA, 12mA
Number of Bits per Element 2

Getting Started

When designing with this VQFN package, ensure the thermal pad is correctly soldered to the PCB ground plane for stability. Use 0.1uF bypass capacitors on both VCCA and VCCB pins as close to the device as possible to minimize power supply noise during high-speed switching.

Also Consider

TXB0104RGYR TITexas Instruments - Provides auto-direction sensing, eliminating the need for a DIR control pin in simple bidirectional applications.