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Direction-controlled voltage translators

SN74LXC8T245

ACTIVE

8-bit dual-supply bus transceiver with configurable voltage-level shifting and tri-state outputs

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Data sheet

SN74LXC8T245

ACTIVE
Data sheet Order now

Product details

Technology family LXC Applications GPIO, JTAG, SPI, UART Bits (#) 8 High input voltage (min) (V) 0.44 High input voltage (max) (V) 5.5 Vout (min) (V) 1.1 Vout (max) (V) 5.5 Data rate (max) (Mbps) 420 IOH (max) (mA) -32 IOL (max) (mA) 32 Supply current (max) (µA) 12 Features Integrated pulldown resistors, Output enable, Overvoltage tolerant inputs, Partial power down (Ioff), Vcc disconnect, Vcc isolation Input type Schmitt-Trigger Output type 3-State Rating Catalog Operating temperature range (°C) -40 to 125
Technology family LXC Applications GPIO, JTAG, SPI, UART Bits (#) 8 High input voltage (min) (V) 0.44 High input voltage (max) (V) 5.5 Vout (min) (V) 1.1 Vout (max) (V) 5.5 Data rate (max) (Mbps) 420 IOH (max) (mA) -32 IOL (max) (mA) 32 Supply current (max) (µA) 12 Features Integrated pulldown resistors, Output enable, Overvoltage tolerant inputs, Partial power down (Ioff), Vcc disconnect, Vcc isolation Input type Schmitt-Trigger Output type 3-State Rating Catalog Operating temperature range (°C) -40 to 125
TSSOP (PW) 24 49.92 mm² 7.8 x 6.4 VQFN (RHL) 24 19.25 mm² 5.5 x 3.5 VSSOP (DGS) 24 29.89 mm² 6.1 x 4.9
  • Fully configurable dual-rail design allows each port to operate from 1.1 V to 5.5 V
  • Robust, glitch-free power supply sequencing
  • Up to 420-Mbps support for 3.3 V to 5.0 V
  • Schmitt-trigger inputs allow for slow or noisy inputs
  • I/Os with integrated dynamic pull-down resistors help reduce external component count
  • Control inputs with integrated static pull-down resistors allow for floating control inputs
  • High drive strength (up to 32 mA at 5 V)
  • Low power consumption:
    • 4-µA maximum (25°C)
    • 12-µA maximum (–40°C to 125°C)
  • VCC isolation and Vcc disconnect (Ioff-float) feature
    • If either VCC supply is < 100 mV or disconnected, all I/Os get pulled-down and then become high-impedance
  • Ioff supports partial-power-down mode operation
  • Compatible with LVC family level shifters
  • Control logic (DIR and OE) are referenced to VCCA
  • Operating temperature from –40°C to +125°C
  • Latch-up performance exceeds 100 mA per JESD 78, Class II
  • ESD protection exceeds JESD 22
    • 4000-V Human-Body Model
    • 1000-V Charged-Device Model
  • Fully configurable dual-rail design allows each port to operate from 1.1 V to 5.5 V
  • Robust, glitch-free power supply sequencing
  • Up to 420-Mbps support for 3.3 V to 5.0 V
  • Schmitt-trigger inputs allow for slow or noisy inputs
  • I/Os with integrated dynamic pull-down resistors help reduce external component count
  • Control inputs with integrated static pull-down resistors allow for floating control inputs
  • High drive strength (up to 32 mA at 5 V)
  • Low power consumption:
    • 4-µA maximum (25°C)
    • 12-µA maximum (–40°C to 125°C)
  • VCC isolation and Vcc disconnect (Ioff-float) feature
    • If either VCC supply is < 100 mV or disconnected, all I/Os get pulled-down and then become high-impedance
  • Ioff supports partial-power-down mode operation
  • Compatible with LVC family level shifters
  • Control logic (DIR and OE) are referenced to VCCA
  • Operating temperature from –40°C to +125°C
  • Latch-up performance exceeds 100 mA per JESD 78, Class II
  • ESD protection exceeds JESD 22
    • 4000-V Human-Body Model
    • 1000-V Charged-Device Model

The SN74LXC8T245 is an 8-bit, dual-supply noninverting bidirectional voltage level translation device. Ax pins and control pins (DIR and OE) are referenced to VCCA logic levels, and Bx pins are referenced to VCCB logic levels. The A port is able to accept I/O voltages ranging from 1.1 V to 5.5 V, while the B port can accept I/O voltages from 1.1 V to 5.5 V. A high on DIR allows data transmission from A to B and a low on DIR allows data transmission from B to A when OE is set to low. When OE is set to high, both Ax and Bx pins are in the high-impedance state. See Device Functional Modes for a summary of the operation of the control logic.

The SN74LXC8T245 is an 8-bit, dual-supply noninverting bidirectional voltage level translation device. Ax pins and control pins (DIR and OE) are referenced to VCCA logic levels, and Bx pins are referenced to VCCB logic levels. The A port is able to accept I/O voltages ranging from 1.1 V to 5.5 V, while the B port can accept I/O voltages from 1.1 V to 5.5 V. A high on DIR allows data transmission from A to B and a low on DIR allows data transmission from B to A when OE is set to low. When OE is set to high, both Ax and Bx pins are in the high-impedance state. See Device Functional Modes for a summary of the operation of the control logic.
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Technical documentation

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Type Title Date
* Data sheet SN74LXC8T245 8-bit Dual-Supply Bus Transceiver with Configurable Level Shifting and 3-State Outputs datasheet (Rev. A) PDF | HTML 14 Mar 2023
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
Application brief Enabling Power-Efficient FPGA Designs With Level Translation PDF | HTML 30 Apr 2024
EVM User's guide TXV010xEVM Evaluation Module User's Guide PDF | HTML 05 Feb 2024
Product overview Enabling System on Module Industrial PC Connectivity With Level Translation PDF | HTML 03 Apr 2023
Application brief Enabling Next Generation Processors, FPGA, and ASSP with Voltage Level Translat PDF | HTML 17 Jan 2023
Application brief Enabling Smart Solar Inverter Designs with Level Translation PDF | HTML 31 Oct 2022
Application brief Enabling LED and LCD Indicators in Modern System Designs PDF | HTML 01 Aug 2022
Application brief Translate Voltages for RGMII (Rev. A) PDF | HTML 06 Aug 2021
Application brief Bringing Together 5G Signal Chains With Level Translation PDF | HTML 05 Mar 2021
Application note Translate Voltages for GPIO PDF | HTML 04 Aug 2020

Design & development

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

Evaluation board

14-24-NL-LOGIC-EVM — Logic product generic evaluation module for 14-pin to 24-pin non-leaded packages

14-24-NL-LOGIC-EVM is a flexible evaluation module (EVM) designed to support any logic or translation device that has a 14-pin to 24-pin BQA, BQB, RGY, RSV, RJW or RHL package.

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
Evaluation board

TXV0106-EVM — TXV0106 evaluation module

The TXV0106 evaluation module (EVM) is an easy-to-use platform to evaluate the functionality and performance of the TXV0106 device. The EVM has optional circuits and jumpers to configure the device for different applications. The device offers options for both fixed and direction control low-skew, (...)
User guide: PDF | HTML
Not available on TI.com
Evaluation board

TXV0108-EVM — TXV0108 evaluation module

The TXV0108 evaluation module (EVM) is an easy-to-use platform to evaluate the functionality and performance of the TXV0108 device. The EVM has optional circuits and jumpers to configure the device for different applications. The device offers options for both fixed and direction control low-skew, (...)
User guide: PDF | HTML
Not available on TI.com
Simulation model

SN74LXC8T245 IBIS model

SCEM785.ZIP (57 KB) - IBIS Model
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Package Pins CAD symbols, footprints & 3D models
TSSOP (PW) 24 Ultra Librarian
VQFN (RHL) 24 Ultra Librarian
VSSOP (DGS) 24 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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