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SN74AXCH1T45 ACTIVE Single-bit dual-supply bus transceiver Pin-to-pin upgrade with a wider voltage range and improved performance
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Single-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and 3-State Outputs

SN74AVCH1T45

ACTIVE

Product details

Parameters

Technology Family AVC Applications GPIO Bits (#) 1 High input voltage (Min) (Vih) 1 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) 6 2 mm² .928 x 1.428 SOT-23 (DBV) 6 5 mm² 2.9 x 1.6 SOT-SC70 (DCK) 6 4 mm² 2 x 2.1 open-in-new Find other Direction-controlled voltage translators

Features

  • Available in the Texas Instruments NanoStar&trade
    and NanoFree™ Packages
  • Control Inputs (DIR) VIH and VIL Levels Are
    Referenced to VCCA Voltage
  • Bus Hold on Data Inputs Eliminates the Need for
    External Pullup and Pulldown Resistors
  • VCC Isolation
  • Fully Configurable Dual-Rail Design
  • 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
    • Human-Body Model (A114-A): 2000 V
    • Machine Model (A115-A): 200 V
    • Charged-Device Model (C101): 1000 V
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Description

The SN74AVCH1T45 is a single-bit noninverting bus transceiver that uses two separate configurable power-supply rails. The A port is designed to track VCCA, which accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track VCCB, which also 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 SN74AVCH1T45 is designed for asynchronous communication between two data buses. The device transmits data from either the A bus to the B bus, or from the B bus to the A bus, depending upon the logic level at the direction-control (DIR) input.

The SN74AVCH1T45 is designed so that the DIR input is referenced to VCCA.

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.

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.

The VCC isolation feature ensures that if either VCCA or VCCB is at GND, then the outputs are in the high-impedance state. The bus-hold circuitry on the powered-up side always stays active.

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

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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 SN74AVCH1T45 Single-Bit Dual-Supply Bus Transceiver With Configurable Level-Shifting, Voltage Translation, and 3-State Outputs datasheet (Rev. E) Mar. 16, 2016
Selection guides Voltage translation buying guide Jun. 13, 2019
Selection guides Logic Guide (Rev. AB) Jun. 12, 2017
Application notes Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) Dec. 02, 2015
Application notes Voltage Translation Between 3.3-V, 2.5-V, 1.8-V, and 1.5-V Logic Standards (Rev. B) Apr. 30, 2015
User guides LOGIC Pocket Data Book (Rev. B) Jan. 16, 2007
Application notes Semiconductor Packing Material Electrostatic Discharge (ESD) Protection Jul. 08, 2004
Application notes Voltage Translation Between 3.3-V, 2.5-V, 1.8-V, and 1.5-V Logic Standards (Rev. A) Jul. 08, 2004
Application notes 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 guides 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 notes 16-Bit Widebus Logic Families in 56-Ball, 0.65-mm Pitch Very Thin Fine-Pitch BGA (Rev. B) May 22, 2002
Application notes Dynamic Output Control (DOC) Circuitry Technology And Applications (Rev. B) Jul. 07, 1999
Application notes 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 BOARDS Download
document-generic User guide
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 BOARDS Download
document-generic User guide
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
EVALUATION BOARDS Download
document-generic User guide
999
Description

This board supports: TAS2555YZEVMTAS2557EVM and TAS2559EVM.

The Smart Amplifier Speaker Characterization Board, when used in conjunction with a supported TI Smart Amplifier and PurePath Console software, provides users the ability to measure speaker excursion, temperature and other parameters for (...)

Features
  • Easily and quickly characterize speakers
  • Quick connection to TI Smart Amplifier EVMs
  • Microphone included for SPL measurements
  • Laser input for speaker excursion measurements

Design tools & simulation

SIMULATION MODELS Download
SCEM438A.ZIP (118 KB) - IBIS Model

Reference designs

REFERENCE DESIGNS Download
SDI Video Aggregation Reference Design
TIDA-00352 This verified reference design is a complete four channel SDI aggregation and de-aggregation solution. One TLK10022 is used to aggregate four synchronous HD-SDI sources together into one 5.94 Gbps serial link. The serial data is transferred via copper or optical fiber where a second TLK10022 is used (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
DisplayPort Video 4:1 Aggregation Reference Design
TIDA-00309 This verified reference design is a complete four channel DisplayPort aggregation and de-aggregation solution. One TLK10022 is used to aggregate four synchronous DisplayPort (DP) sources together into one 10.8 Gbps serial link. The serial data is transferred via copper or optical fiber where a (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
DSBGA (YZP) 6 View options
SC70 (DCK) 6 View options
SOT-23 (DBV) 6 View options

Ordering & quality

Support & training

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