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

SN74LXC8T245

ACTIVE

Product details

Technology Family LXC Applications UART, SPI, JTAG, GPIO Bits (#) 8 High input voltage (Min) (Vih) 0.44 High input voltage (Max) (Vih) 5.5 Vout (Min) (V) 1.1 Vout (Max) (V) 5.5 IOH (Max) (mA) -32 IOL (Max) (mA) 32 Rating Catalog
Technology Family LXC Applications UART, SPI, JTAG, GPIO Bits (#) 8 High input voltage (Min) (Vih) 0.44 High input voltage (Max) (Vih) 5.5 Vout (Min) (V) 1.1 Vout (Max) (V) 5.5 IOH (Max) (mA) -32 IOL (Max) (mA) 32 Rating Catalog
TSSOP (PW) 24 34 mm² 7.7 x 4.4 VQFN (RHL) 24 19 mm² 5.5 x 3.5
  • 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/O’s 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/O’s 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/O’s 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/O’s 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 24 Nov 2020
Application note Translate Voltages for RGMII (Rev. A) 06 Aug 2021
Application note Bringing Together 5G Signal Chains With Level Translation 05 Mar 2021
Application note Translate Voltages for GPIO 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 — Generic 14 through 24 pin non-leaded package evaluation module

Flexible EVM designed to support any logic or translation device that has a BQA, BQB, RGY (14-24 pin), RSV, RJW, or RHL package.
In stock
Limit: 10
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 (...)

In stock
Limit: 5
Simulation model

SN74LXC8T245 IBIS model

SCEM785.ZIP (57 KB) - IBIS Model
Package Pins Download
TSSOP (PW) 24 View options
VQFN (RHL) 24 View options

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