A newer version of this product is available
open-in-new Compare products
Exact equivalent in functionality and parametrics to the compared device:
NEW SN74AXCH2T45 ACTIVE 2-bit 0.65V to 3.6V AXC dual-supply bus transciever with bus-hold Pin-to-pin upgrade with a wider voltage range and improved performance
Top
Dual-Bit Dual-Supply Bus Transceiver With Configurable Voltage Translation Aan 3-State Outputs

SN74AVCH2T45

ACTIVE

Product details

Parameters

Technology Family AVC Applications GPIO, I2S Bits (#) 2 High input voltage (Min) (Vih) 0.8 High input voltage (Max) (Vih) 3.6 Output voltage (Min) (V) 1.2 Output voltage (Max) (V) 3.6 IOH (Max) (mA) -12 IOL (Max) (mA) 12 Rating Catalog open-in-new Find other Direction-controlled voltage translators

Package | Pins | Size

DSBGA (YZP) 8 3 mm² .928 x 1.928 SSOP (DCT) 8 8 mm² 3 x 2.8 SSOP (DCT) 8 8 mm² 2.95 x 2.80 VSSOP (DCU) 8 6 mm² 2 x 3.1 open-in-new Find other Direction-controlled voltage translators

Features

  • Available in the Texas Instruments NanoFree Package
  • VCC Isolation
  • 2-Rail Design
  • I/Os are 4.6 V Tolerant
  • Partial Power-Down-Mode Operation
  • Bus Hold on Data Inputs
  • Maximum 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
open-in-new Find other Direction-controlled voltage translators

Description

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 SN74AVCH2T45 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 SN74AVCH2T45 features active bus-hold circuitry, which holds unused or un-driven inputs at a valid logic state. TI does not recommend using pull-up or pull-down resistors with the bus-hold circuitry.

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 outputs are in the high-impedance state. The bus-hold circuitry on the powered-up side always stays active.

Active bus-hold circuitry holds unused or un-driven inputs at a valid logic state. NanoFree package technology is a major breakthrough in IC packaging concepts, using the die as the package.

open-in-new Find other Direction-controlled voltage translators
Download

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 16
Type Title Date
* Datasheet SN74AVCH2T45 2-Bit, 2-Supply, Bus Transceiver with Configurable Level-Shifting and Translation and 3-State Outputs datasheet (Rev. H) Apr. 15, 2015
Selection guide Voltage translation buying guide Jun. 13, 2019
Selection guide Logic Guide (Rev. AB) Jun. 12, 2017
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) Dec. 02, 2015
Application note Voltage Translation Between 3.3-V, 2.5-V, 1.8-V, and 1.5-V Logic Standards (Rev. B) Apr. 30, 2015
User guide LOGIC Pocket Data Book (Rev. B) Jan. 16, 2007
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection Jul. 08, 2004
Application note Voltage Translation Between 3.3-V, 2.5-V, 1.8-V, and 1.5-V Logic Standards (Rev. A) Jul. 08, 2004
Application note Selecting the Right Level Translation Solution (Rev. A) Jun. 22, 2004
More literature Logic Cross-Reference (Rev. A) Oct. 07, 2003
More literature LCD Module Interface Application Clip May 09, 2003
User guide AVC Advanced Very-Low-Voltage CMOS Logic Data Book, March 2000 (Rev. C) Aug. 20, 2002
More literature Standard Linear & Logic for PCs, Servers & Motherboards Jun. 13, 2002
Application note 16-Bit Widebus Logic Families in 56-Ball, 0.65-mm Pitch Very Thin Fine-Pitch BGA (Rev. B) May 22, 2002
Application note Dynamic Output Control (DOC) Circuitry Technology And Applications (Rev. B) Jul. 07, 1999
Application note AVC Logic Family Technology and Applications (Rev. A) Aug. 26, 1998

Design & development

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

Hardware development

EVALUATION BOARD Download
10
Description
Flexible EVM designed to support any device that has a DCK, DCT, DCU, DRL, or DBV package in a 5 to 8 pin count.
Features
  • Board design allows for versatility in evaluation
  • Supports a wide-range of logic devices
EVALUATION BOARD Download
20
Description

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 is (...)

Features
  • SMB connector available for high speed operation
  • Ground port available on each header pin to maintain signal integrity
  • DIR and OE have 10K ohm pull up /pull down resistor options
  • Designed to support up to 20 different devices

Design tools & simulation

SIMULATION MODEL Download
SCEM433B.ZIP (118 KB) - IBIS Model

CAD/CAE symbols

Package Pins Download
DSBGA (YZP) 8 View options
SM8 (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

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

Related videos