SN74AVC2T45

ACTIVE

Dual-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and 3-State Outputs

A newer version of this product is available

open-in-new Compare alternates
Drop-in replacement with upgraded functionality to the compared device
SN74AXC2T45 ACTIVE Dual-bit dual-supply bus transceiver with configurable voltage translation Pin-to-pin upgrade with a wider voltage range and improved performance

Product details

Technology family AVC Applications I2S Bits (#) 2 High input voltage (min) (V) 0.78 High input voltage (max) (V) 3.6 Vout (min) (V) 1.2 Vout (max) (V) 3.6 Data rate (max) (Mbps) 500 IOH (max) (mA) -12 IOL (max) (mA) 12 Supply current (max) (µA) 20 Features Overvoltage tolerant inputs, Partial power down (Ioff) Input type Standard CMOS Output type Balanced CMOS, Push-Pull Rating Catalog Operating temperature range (°C) -40 to 85
Technology family AVC Applications I2S Bits (#) 2 High input voltage (min) (V) 0.78 High input voltage (max) (V) 3.6 Vout (min) (V) 1.2 Vout (max) (V) 3.6 Data rate (max) (Mbps) 500 IOH (max) (mA) -12 IOL (max) (mA) 12 Supply current (max) (µA) 20 Features Overvoltage tolerant inputs, Partial power down (Ioff) Input type Standard CMOS Output type Balanced CMOS, Push-Pull Rating Catalog Operating temperature range (°C) -40 to 85
DSBGA (YZP) 8 2.8125 mm² 2.25 x 1.25 SSOP (DCT) 8 11.8 mm² 2.95 x 4 VSSOP (DCU) 8 6.2 mm² 2 x 3.1
  • Available in the Texas Instruments NanoFree™ Package
  • VCC Isolation Feature: If Either VCC Input Is at GND, Both Ports Are in the High-Impedance State
  • Dual Supply Rail Design
  • I/Os Are 4.6-V Over Voltage Tolerant
  • Ioff Supports Partial-Power-Down Mode Operation
  • Max Data Rates
    • 500 Mbps (1.8 V to 3.3 V)
    • 320 Mbps (<1.8 V to 3.3 V )
    • 320 Mbps (Level-Shifting to 2.5 V or 1.8 V)
    • 280 Mbps (Level-Shifting to 1.5 V)
    • 240 Mbps (Level-Shifting to 1.2 V)
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
  • Available in the Texas Instruments NanoFree™ Package
  • VCC Isolation Feature: If Either VCC Input Is at GND, Both Ports Are in the High-Impedance State
  • Dual Supply Rail Design
  • I/Os Are 4.6-V Over Voltage Tolerant
  • Ioff Supports Partial-Power-Down Mode Operation
  • Max Data Rates
    • 500 Mbps (1.8 V to 3.3 V)
    • 320 Mbps (<1.8 V to 3.3 V )
    • 320 Mbps (Level-Shifting to 2.5 V or 1.8 V)
    • 280 Mbps (Level-Shifting to 1.5 V)
    • 240 Mbps (Level-Shifting to 1.2 V)
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22

This 2-bit non-inverting bus transceiver uses two separate configurable power-supply rails. The A ports are designed to track VCCA and accepts any supply voltage from 1.2 V to 3.6 V. The B ports are designed to track VCCB and accepts any supply voltage from 1.2 V to 3.6 V. This allows for universal low-voltage bidirectional translation and level-shifting between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes.

The SN74AVC2T45 is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR pin) input activate either the B-port outputs or the A-port outputs. The device transmits data from the A bus to the B bus when the B-port outputs are activated and from the B bus to the A bus when the A-port outputs are activated. The input circuitry on both A and B ports always is active and must have a logic HIGH or LOW level applied to prevent excess leakage current on the internal CMOS structure.

This 2-bit non-inverting bus transceiver uses two separate configurable power-supply rails. The A ports are designed to track VCCA and accepts any supply voltage from 1.2 V to 3.6 V. The B ports are designed to track VCCB and accepts any supply voltage from 1.2 V to 3.6 V. This allows for universal low-voltage bidirectional translation and level-shifting between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes.

The SN74AVC2T45 is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR pin) input activate either the B-port outputs or the A-port outputs. The device transmits data from the A bus to the B bus when the B-port outputs are activated and from the B bus to the A bus when the A-port outputs are activated. The input circuitry on both A and B ports always is active and must have a logic HIGH or LOW level applied to prevent excess leakage current on the internal CMOS structure.

Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Pin-for-pin with same functionality to the compared device
TXU0102 ACTIVE Two channel fixed-direction level shifter with channels in same direction 2 channel fixed direction level translator
TXU0202 ACTIVE Two channel fixed-direction level shifter with channels in opposite direction 2 channel fixed direction level translator

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 17
Type Title Date
* Data sheet SN74AVC2T45 2-Bit, Dual Supply, Bus Transceiver With Configurable Level-Shifting and Translation datasheet (Rev. L) PDF | HTML 18 May 2017
Application brief Future-Proofing Your Level Shifter Design with TI's Dual Footprint Packages PDF | HTML 05 Sep 2023
EVM User's guide Generic AVC and LVC Direction Controlled Translation EVM (Rev. B) 30 Jul 2021
Selection guide Voltage Translation Buying Guide (Rev. A) 15 Apr 2021
EVM User's guide SN74AXC2T-SMALLPKGEVM Evaluation module user's guide 04 Jun 2019
Selection guide Logic Guide (Rev. AB) 12 Jun 2017
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 02 Dec 2015
Application note Voltage Translation Between 3.3-V, 2.5-V, 1.8-V, and 1.5-V Logic Standards (Rev. B) 30 Apr 2015
User guide LOGIC Pocket Data Book (Rev. B) 16 Jan 2007
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 08 Jul 2004
Application note Selecting the Right Level Translation Solution (Rev. A) 22 Jun 2004
More literature LCD Module Interface Application Clip 09 May 2003
User guide AVC Advanced Very-Low-Voltage CMOS Logic Data Book, March 2000 (Rev. C) 20 Aug 2002
More literature Standard Linear & Logic for PCs, Servers & Motherboards 13 Jun 2002
Application note 16-Bit Widebus Logic Families in 56-Ball, 0.65-mm Pitch Very Thin Fine-Pitch BGA (Rev. B) 22 May 2002
Application note Dynamic Output Control (DOC) Circuitry Technology And Applications (Rev. B) 07 Jul 1999
Application note AVC Logic Family Technology and Applications (Rev. A) 26 Aug 1998

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

5-8-LOGIC-EVM — Generic logic evaluation module for 5-pin to 8-pin DCK, DCT, DCU, DRL and DBV packages

Flexible EVM designed to support any device that has a DCK, DCT, DCU, DRL, or DBV package in a 5 to 8 pin count.
User guide: PDF
Not available on TI.com
Evaluation board

AVCLVCDIRCNTRL-EVM — Generic EVM for Direction-Controlled Bidirectional Translation Device Supporting AVC and LVC

The generic EVM is designed to support one, two, four and eight channel LVC and AVC direction-controlled translation devices. It also supports the bus hold and automotive -Q1 devices in the same number of channels. The AVC are low voltage translation devices with lower drive strength of 12mA. LVC (...)

User guide: PDF
Not available on TI.com
Evaluation board

AXC2T-SMALLPKGEVM — AXC2T small package evaluation module for DTM and RSW package devices

This EVM is designed to support DTM and RSW packages for the AXC and LVC family of DIR controlled bidirectional devices. The AXC and AVC devices belong to the low voltage direction controlled translation family with operating voltage from 0.65V to 3.6V (AXC) and 1.2 to 3.6 (AVC) with 12mA of drive (...)
User guide: PDF
Not available on TI.com
Driver or library

CC256XMS432BTBLESW — TI Dual-mode Bluetooth Stack on MSP432 MCUs

TI’s Dual-mode Bluetooth stack on MSP432 MCUs software for Bluetooth + Bluetooth Low Energy enables the MSP432 MCU and is comprised of Single Mode and Dual-mode offerings implementing the Bluetooth 4.0 specification. The Bluetooth stack is fully qualified (QDID 69887 and QDID 69886), provides (...)
Simulation model

SN74AVC2T45 IBIS Model (Rev. B)

SCEM431B.ZIP (122 KB) - IBIS Model
Reference designs

TIDC-CC3200-VIDEO — SimpleLink™ CC32xx-OV788 Video/Audio Streaming Over Wi-Fi Reference Design

The design enables OV788 ultra-low power video compression chip users to bring live streaming capabilities of audio and video data over Wi-Fi® very easily. It showcases a single chip implementation of RTP video streaming + Wi-Fi connection on the SimpleLink™ CC3200 Wi-Fi wireless (...)
Design guide: PDF
Schematic: PDF
Reference designs

DLP4500-C350REF — High Resolution, Portable Light Steering Reference Design using DLP Technology

This reference design, featuring the DLP® 0.45” WXGA chipset and implemented in the DLP® LightCrafter™ 4500 evaluation module (EVM), enables flexible control of high resolution, accurate patterns for industrial, medical, and scientific applications. With a free USB-based GUI and (...)
Test report: PDF
Schematic: PDF
Reference designs

TIDA-00254 — Accurate Point Cloud Generation for 3D Machine Vision Applications using DLP® Technology

The 3D Machine Vision reference design employs Texas Instruments DLP® Advanced Light Control Software Development Kit (SDK) for LightCrafter™ series controllers, which allows developers to easily construct 3D point clouds by integrating TI’s digital micromirror device (DMD) (...)
Test report: PDF
Schematic: PDF
Package Pins Download
DSBGA (YZP) 8 View options
SSOP (DCT) 8 View options
VSSOP (DCU) 8 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos