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Direction-controlled voltage translators

SN74AVC2T45-Q1

ACTIVE

Automotive Dual-Bit Dual-Supply Bus Transceiver with Config Voltage Translation and 3-State

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Data sheet

SN74AVC2T45-Q1

ACTIVE
Data sheet Order now

Product details

Technology family AVC Applications GPIO, 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 Automotive Operating temperature range (°C) -40 to 125
Technology family AVC Applications GPIO, 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 Automotive Operating temperature range (°C) -40 to 125
VSSOP (DCU) 8 6.2 mm² 2 x 3.1
  • Qualified for Automotive Applications
  • Control Inputs VIH/VIL Levels Are
    Referenced to VCCA Voltage
  • Fully Configurable Dual-Rail Design Allows Each Port to
    Operate Over the Full 1.2-V to 3.6-V Power-Supply Range
  • I/Os Are 4.6-V Tolerant
  • Ioff Supports Partial-Power-Down Mode Operation
  • Max Data Rates
    • 500 Mbps (1.8-V to 3.3-V Translation)
    • 320 Mbps (<1.8-V to 3.3-V Translation)
    • 320 Mbps (Translate to 2.5 V or 1.8 V)
    • 280 Mbps (Translate to 1.5 V)
    • 240 Mbps (Translate to 1.2 V)
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 8000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)
  • Qualified for Automotive Applications
  • Control Inputs VIH/VIL Levels Are
    Referenced to VCCA Voltage
  • Fully Configurable Dual-Rail Design Allows Each Port to
    Operate Over the Full 1.2-V to 3.6-V Power-Supply Range
  • I/Os Are 4.6-V Tolerant
  • Ioff Supports Partial-Power-Down Mode Operation
  • Max Data Rates
    • 500 Mbps (1.8-V to 3.3-V Translation)
    • 320 Mbps (<1.8-V to 3.3-V Translation)
    • 320 Mbps (Translate to 2.5 V or 1.8 V)
    • 280 Mbps (Translate to 1.5 V)
    • 240 Mbps (Translate to 1.2 V)
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 8000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)

This dual-bit noninverting bus transceiver uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.2 V to 3.6 V. This allows for universal low-voltage bidirectional translation 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) 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 ICC and ICCZ.

The SN74AVC2T45 is designed so that the DIR input is powered by VCCA.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

The VCC isolation feature ensures that if either VCC input is at GND, both ports are in the high-impedance state.

This dual-bit noninverting bus transceiver uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.2 V to 3.6 V. This allows for universal low-voltage bidirectional translation 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) 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 ICC and ICCZ.

The SN74AVC2T45 is designed so that the DIR input is powered by VCCA.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

The VCC isolation feature ensures that if either VCC input is at GND, both ports are in the high-impedance state.
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Technical documentation

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* Data sheet SN74AVC2T45-Q1 Dual-Bit Dual-Supply Bus Transceiver datasheet 30 Jun 2010
Application note Schematic Checklist - A Guide to Designing With Fixed or Direction Control Translators PDF | HTML 02 Oct 2024
Application note Schematic Checklist - A Guide to Designing with Auto-Bidirectional Translators PDF | HTML 12 Jul 2024
Application note Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) PDF | HTML 03 Jul 2024
Functional safety information SN74AVC2T45-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 17 Apr 2024
Selection guide Voltage Translation Buying Guide (Rev. A) 15 Apr 2021
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
More literature Automotive Logic Devices Brochure 27 Aug 2014
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

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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

5-8-NL-LOGIC-EVM — Generic logic and translation EVM supporting 5 to 8 pin DPW, DQE, DRY, DSF, DTM, DTQ and DTT pkgs

Generic EVM designed to support any logic or translation device that has a DTT, DRY, DPW, DTM, DQE, DQM, DSF, or DTQ package. Board design allows for flexible evaluation.

User guide: PDF | HTML
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
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