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SN74AVC8T245

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8-Bit Dual-Supply Bus Transceiver with Configurable Voltage-Level Shifting and 3-State Outputs

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8-Bit Dual-Supply Bus Transceiver with Configurable Voltage-Level Shifting and 3-State Outputs

SN74AVC8T245

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Product details

Parameters

Technology Family AVC Bits (#) 8 High input voltage (Min) (Vih) 0.78 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

TSSOP (PW) 24 34 mm² 4.4 x 7.8 TVSOP (DGV) 24 32 mm² 5 x 6.4 VQFN (RHL) 24 19 mm² 3.5 x 5.5 VQFN (RHL) 24 19 mm² 5.5 x 3.5 open-in-new Find other Direction-controlled voltage translators

Features

  • 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)
  • Control Inputs VIH/VIL Levels Are Referenced to VCCA Voltage
  • VCC Isolation Feature – If Either VCC Input Is at GND, All I/O Ports Are in the High-Impedance State
  • Ioff Supports Partial Power-Down Mode Operation
  • Fully Configurable Dual-Rail Design Allows Each Port to Operate Over the Full 1.4-V to 3.6-V Power-Supply Range
  • I/Os Are 4.6-V Tolerant
  • Maximum Data Rates
    • 170 Mbps (VCCA  < 1.8 V or VCCB  < 1.8 V)
    • 320 Mbps (VCCA  ≥ 1.8 V and VCCB  ≥ 1.8 V)

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Description

This 8-bit noninverting bus transceiver uses two separate configurable power-supply rails. The SN74AVC8T245 is optimized to operate with VCCA/VCCB set at 1.4 V to 3.6 V. The device 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 SN74AVC8T245 is designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the outputs so the buses are effectively isolated.

The SN74AVC8T245 is designed so that the control pins (DIR and OE) are supplied by VCCA.

The SN74AVC8T245 solution is compatible with a single-supply system and can be replaced later with a ’245 function, with minimal printed circuit board redesign.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, thus 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.

To ensure the high-impedance state during power up or power down, OE shall be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

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Technical documentation

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Type Title Date
* Datasheet SN74AVC8T245 8-Bit Dual-Supply Bus Transceiver With Configurable Voltage Translation and 3-State Outputs datasheet (Rev. J) Feb. 13, 2017
Solution guides Voltage translation buying guide Jun. 13, 2019
User guides Generic AVC and LVC Direction Controlled Translation EVM (Rev. A) Feb. 18, 2019
Selection guides Logic Guide (Rev. AB) Jun. 12, 2017
User guides Generic AVC and LVC Direction Controlled Translation EVM May 09, 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
Solution 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
$10.00
Description
This EVM is designed to support any logic device that has a D, DW, DB, NS, PW, P, N, or DGV package in a 14 to 24 pin count.
Features
  • Board design allows for versatility in evaluation
  • Supports a wide-range of logic devices
View details
EVALUATION BOARDS Download
document-generic User guide
$20.00
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
View details
EVALUATION BOARDS Download
document-generic User guide
$1,299.00
Description

The DLP® LightCrafter™ 4500 development module provides a flexible light steering solution with high brightness and resolution for industrial, medical and scientific applications. DLP LightCrafter 4500 features the 0.45 WXGA chipset and offers a compelling combination of resolution (...)

Features
  • RGB LED light engine with 150L light output
  • Onboard LED Driver with 0-5A LED Driver
  • Simultaneous RGB LED operation
  • High speed pattern display with native DLP4500 resolution (912x1140)
    • Up to 4225 Hz binary pattern rate
    • Up to 120 Hz 8-bit grayscale pattern rate
  • Image or video display up to WXGA resolution (...)
View details
EVALUATION BOARDS Download
$1,146.54
Description
J6Entry, RSP and TDA2E-17 CPU Board EVM is an evaluation platform designed to speed up development efforts and reduce time to market for Infotainment  reconfigurable Digital Cluster or Integrated Digital Cockpit and ADAS applications. The CPU board integrates key peripherals such as parallel (...)
Features
  • 2GB DDR3L
  • LP8733/LP8732 Power Solution
  • On-board eMMC, NAND, NOR
  • USB3, USB2, PCIe, Ethernet, COM8Q, CAN, MLB, MicroSD and HDMI connectors
View details
EVALUATION BOARDS Download
$2,324.44
Description

The J6Entry/RSP EVM is an evaluation platform designed to speed up development efforts and reduce time to market for applications such as Infotainment, reconfigurable Digital Cluster or Integrated Digital Cockpit.

The main CPU board integrates these key peripherals such as Ethernet or HDMI, while the (...)

Features
  • 10.1" Display with capacitive Touch
  • JAMR3 Radio Tuner Application Board
  • 2GB DDR3L
  • LP8733/LP8732 Power Solution
  • On-board eMMC, NAND, NOR
  • USB3, USB2, PCIe, Ethernet, COM8Q, CAN, MLB, MicroSD and HDMI connectors
View details
DAUGHTER CARDS Download
document-generic User guide
$499.00
Description

The K2G Audio Daughter Card is designed to work in conjunction with the K2G General Purpose EVM (EVMK2G) or EVMK2GX and the EVMK2G or EVMK2GX is required for Audio Daughter Card operation.  The Daughter Card allows users to develop multichannel audio applications such as A/V receivers (...)

Features
  • Audio expansion compatible with the K2G General Purpose EVM
  • Eight channels of analog input
  • Sixteen channels of analog output
  • S/PDIF input (optical or coaxial)
  • S/PDIF output (coaxial)
  • I2S header for external I/O (HDMI, etc.)
View details
DEVELOPMENT KITS Download
document-generic User guide
$699.00
Description

The K2G Evaluation Module (EVM) enables developers to immediately start evaluating the 66AK2Gx - 600MHz processor, and to accelerate the development of audio, industrial motor control, smart grid protection and other high reliability, real-time compute intensive applications.  Similar to (...)

Features
  • 66AK2G02 C66x DSP+ARM A15 Processor at 600MHz
  • 2-GByte DDR3L with ECC
  • TPS659118 PMIC
  • Audio and Serial expansion headers
  • Processor SDK Linux and TI-RTOS support
  • Supports Gigabit Ethernet
View details
DEVELOPMENT KITS Download
document-generic User guide
$699.00
Description

The EVMK2GX (also known as "K2G") 1GHz Evaluation Module (EVM) enables developers to immediately start evaluating the 66AK2Gx processor family, and to accelerate the development of audio, industrial motor control, smart grid protection and other high reliability, real-time compute intensive (...)

Features
  • 66AK2G12 C66x DSP+ARM A15 Processor at 1GHz
  • 2-GByte DDR3L with ECC
  • TPS65911A PMIC
  • Audio and serial expansion headers
  • Processor SDK Linux and TI-RTOS support
View details
DEVELOPMENT KITS Download
document-generic User guide
$1,049.00
Description

The K2G 1GHz High Secure Evaluation Module (EVM) enables developers to start  evaluating and testing the programming of the  high secure developmental version of the  66AK2Gx processor, and to accelerate the next stage of secure boot product development of audio and industrial real (...)

Features
  • 66AK2G12 C66x DSP+ARM A15 Processor at 1GHz
  • 2-GByte DDR3L with ECC
  • TPS65911A PMIC
  • Audio and serial expansion headers
  • Processor SDK Linux and TI-RTOS support
View details
INTERFACE ADAPTERS Download
document-generic User guide
$67.99
Description
The camera adapter BoosterPack™ (BP), which contains SN74AVCx devices (voltage-level translators) from Texas Instruments, is an interface for interconnecting the LaunchPad™ (LP) operating at 3.3 V and the OV788 camera board operating at 1.85 V.  The 20-pin header ensures (...)
Features
  • 1.85/3.3V bidrectional conversion
  • Compatible with TI Launchpads
  • Wi-Fi Video Streaming
View details

Design tools & simulation

SIMULATION MODELS Download
SCEM415A.ZIP (65 KB) - IBIS Model

Reference designs

REFERENCE DESIGNS Download
High Resolution, Portable Light Steering Reference Design using DLP Technology
DLP4500-C350REF — 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 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
SimpleLink™ CC32xx-OV788 Video/Audio Streaming Over Wi-Fi Reference Design
TIDC-CC3200-VIDEO — 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 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
48V 3-Phase Inverter with Shunt-based In-line Motor Phase Current Sensing Reference Design
TIDA-00913 — The TIDA-00913 reference design realizes a 48V/10A 3-phase GaN inverter with precision in-line shunt-based phase current sensing for accurate control of precision drives such as servo drives. One of the largest challenges with in-line shunt-based phase current sensing is the high common-mode voltage (...)
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REFERENCE DESIGNS Download
Accurate Point Cloud Generation for 3D Machine Vision Applications using DLP® Technology
TIDA-00254 — 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 (...)
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REFERENCE DESIGNS Download
Monte-Carlo Simulation on AM57x Using OpenCL for DSP Acceleration Reference Design
TIDEP0046 — TI’s high performance ARM® Cortex®-A15 based AM57x processors also integrate C66x DSPs. These DSPs were designed to handle high signal and data processing tasks that are often required by industrial, automotive and financial applications. The AM57x OpenCL implementation makes it easy (...)
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REFERENCE DESIGNS Download
Power and Thermal Design Considerations Using TI's AM57x Processor Reference Design
TIDEP0047 — This TI Design (TIDEP0047) is a reference platform based on the AM57x processor and companion TPS659037 power management integrated circuit (PMIC).  This TI Design specifically highlights important power and thermal design considerations and techniques for systems designed with AM57x and (...)
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48V/10A High Frequency PWM 3-Phase GaN Inverter Reference Design for High-Speed Drives
TIDA-00909 — Low voltage, high-speed drives and/or low inductance brushless motors require higher inverter switching frequencies in the range of 40 kHz to 100 kHz to minimize losses and torque ripple in the motor. The TIDA-00909 reference design achieves that by using a 3-phase inverter with three 80V/10A (...)
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REFERENCE DESIGNS Download
Dual Camera Reference Design based on TMDXEVM437X
TIDEP0014 — Developers looking for camera support on the Sitara AM437x processors can use this reference design to jump start their development. The AM437x camera interface is a parallel port that can be configured as a single or dual camera interface. The dual camera configuration enables the use of two (...)
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REFERENCE DESIGNS Download
Interface to a 5V BiSS Position Encoder Reference Design
TIDA-00175 — This TI Design implements a hardware interface solution based on the BiSS standard for position or rotary encoders. It supports both BiSS Point-to-Point and BiSS Bus configurations.The building blocks include the power supply for a 5V BiSS encoder – with innovative smart e-Fuse technology (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Reference Design for an Interface to a Position Encoder with EnDat 2.2
TIDA-00172 — This TI Design implements a hardware interface solution based on the HEIDENHAIN EnDat 2.2 standard for position or rotary encoders. The building blocks include the power supply for the encoder – with innovative smart e-Fuse technology - and robust half-duplex RS485 transceivers, including line (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
TSSOP (PW) 24 View options
TVSOP (DGV) 24 View options
VQFN (RHL) 24 View options

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Videos

Voltage translation in switches and routers

Next-generation switches and routers are using lower operating voltages in their systems; creating the need for voltage translation to solve voltage mismatches.

Posted: 21-Jan-2019
Duration: 01:57

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