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SN74AVC1T45DRLR

TISN74AVC1T45DRLR

Texas Instruments
Voltage Level Translator Bidirectional 1 Circuit 1 Channel 500Mbps SOT-5X3
Active33,494 in stock
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Overview

The SN74AVC1T45DRLR is a single-bit, bidirectional voltage level translator designed for high-speed data communication up to 500Mbps. It utilizes two independent power rails, allowing for seamless signal translation between 1.2V and 3.6V logic levels on both the A and B ports. The device features VCC isolation and loff circuitry for partial-power-down mode, ensuring high-impedance states when either VCC is grounded.

Why Choose This Part

This translator supports a wide 1.2V to 3.6V operating range on both rails, providing maximum flexibility for ultra-low voltage designs. Its ultra-compact SOT-5X3 package saves significant PCB real estate, while the 12mA output drive and high-speed capability make it suitable for performance-critical paths.

Applications

I/O Level Shifting
Interfacing low-voltage processors or FPGAs with higher-voltage peripherals or legacy CMOS logic.
High-Speed Data Bus Buffering
Translating high-speed signals like clock lines or data buses operating at rates up to 500Mbps.
Mixed-Voltage System Interconnects
Connecting 1.8V digital logic to 3.3V power domains in portable or industrial electronics.

Key Specifications

Data Rate 500Mbps
Output Type Tri-State, Non-Inverted
Channel Type Bidirectional
Mounting Type Surface Mount
Package / Case SOT-563, SOT-666
Voltage - VCCA 1.2 V ~ 3.6 V
Voltage - VCCB 1.2 V ~ 3.6 V
Translator Type Voltage Level
Number of Circuits 1
Channels per Circuit 1
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package SOT-5X3

Getting Started

Ensure that VCCA and VCCB are correctly decoupled with 0.1uF capacitors placed close to the device pins. The DIR pin controls data direction; pull it high for A-to-B translation or low for B-to-A translation. Design traces for 500Mbps operation by maintaining short path lengths and considering controlled impedance for high-speed signal integrity.

SN74AVC1T45 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Stock
SN74AVC1T45DRLR (this part) SOT-563, SOT-666 33,494
SN74AVC1T45DCKR TSSOP-6 47,200

Also Consider

TXB0101DRLR TITexas Instruments - Offers auto-direction sensing for applications where a dedicated direction control pin is not available.