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SN74AXC1T45 ACTIVE Single-bit dual-supply bus transceiver Pin-to-pin upgrade with a wider voltage range and improved performance

Product details

Technology Family AVC Applications GPIO Bits (#) 1 High input voltage (Min) (Vih) 0.78 High input voltage (Max) (Vih) 3.6 Vout (Min) (V) 1.2 Vout (Max) (V) 3.6 IOH (Max) (mA) -12 IOL (Max) (mA) 12 Rating Catalog
Technology Family AVC Applications GPIO Bits (#) 1 High input voltage (Min) (Vih) 0.78 High input voltage (Max) (Vih) 3.6 Vout (Min) (V) 1.2 Vout (Max) (V) 3.6 IOH (Max) (mA) -12 IOL (Max) (mA) 12 Rating Catalog
DSBGA (YZP) 6 2 mm² .928 x 1.428 SOT-23 (DBV) 6 5 mm² 2.9 x 1.6 SOT-5X3 (DRL) 6 2 mm² 1.65 x 1.2 SOT-SC70 (DCK) 6 4 mm² 2 x 2.1
  • Available in the Texas Instruments NanoFree Package
  • Fully Configurable Dual-Rail Design Allows Each Port to
    Operate Over the Full 1.2-V to 3.6-V Power-Supply Range
  • VCC Isolation Feature - If Either VCC
    Input Is At GND, Both Ports Are In The High-Impedance State
  • DIR Input Circuit Referenced to VCCA
  • ±12-mA Output Drive at 3.3 V
  • I/Os Are 4.6-V Tolerant
  • Ioff Supports Partial-Power-Down Mode Operation
  • Typical 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
    • ±2000-V Human Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • ±1000-V Charged-Device Model (C101)
  • Available in the Texas Instruments NanoFree Package
  • Fully Configurable Dual-Rail Design Allows Each Port to
    Operate Over the Full 1.2-V to 3.6-V Power-Supply Range
  • VCC Isolation Feature - If Either VCC
    Input Is At GND, Both Ports Are In The High-Impedance State
  • DIR Input Circuit Referenced to VCCA
  • ±12-mA Output Drive at 3.3 V
  • I/Os Are 4.6-V Tolerant
  • Ioff Supports Partial-Power-Down Mode Operation
  • Typical 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
    • ±2000-V Human Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • ±1000-V Charged-Device Model (C101)

This single-bit noninverting bus transceiver uses two separate configurable power-supply rails. The SN74AVC1T45 is optimized to operate with VCCA/VCCB set at 1.4 V to 3.6 V. It is operational with VCCA/VCCB as low as 1.2 V. 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 SN74AVC1T45 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 SN74AVC1T45 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, then both ports are in the high-impedance state.

NanoFree™ package technology is a major breakthrough in IC packaging concepts, using the die as the package.

This single-bit noninverting bus transceiver uses two separate configurable power-supply rails. The SN74AVC1T45 is optimized to operate with VCCA/VCCB set at 1.4 V to 3.6 V. It is operational with VCCA/VCCB as low as 1.2 V. 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 SN74AVC1T45 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 SN74AVC1T45 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, then both ports are in the high-impedance state.

NanoFree™ package technology is a major breakthrough in IC packaging concepts, using the die as the package.

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Technical documentation

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Type Title Date
* Data sheet SN74AVC1T45 Single-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and 3-State Outputs datasheet (Rev. H) 23 Dec 2014
User 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
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
Test report TI Power Reference Design for Xilinx® Artix®-7 (AC701) 12 May 2014
User guide PMP7977 User's Guide 11 Sep 2013
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 Logic Cross-Reference (Rev. A) 07 Oct 2003
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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Simulation model

SN74AVC1T45 IBIS Model (Rev. B)

SCEM436B.ZIP (118 KB) - IBIS Model
PCB layout

PMP7977 PCB

TIDU151.PDF (6781 KB)
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