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Direction-controlled voltage translators

SN74AXC2T245

ACTIVE

Dual-bit, 2-DIR pin dual-supply bus transceiver w/ configurable voltage translation, 3-state output

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Data sheet

SN74AXC2T245

ACTIVE
Data sheet Order now

Product details

Technology family AXC Applications JTAG, UART Bits (#) 2 High input voltage (min) (V) 0.45 High input voltage (max) (V) 3.6 Vout (min) (V) 0.65 Vout (max) (V) 3.6 Data rate (max) (Mbps) 380 IOH (max) (mA) -12 IOL (max) (mA) 12 Supply current (max) (µA) 23 Features Output enable, Overvoltage tolerant inputs, Partial power down (Ioff), Vcc isolation Input type CMOS Output type 3-State Rating Catalog Operating temperature range (°C) -40 to 125
Technology family AXC Applications JTAG, UART Bits (#) 2 High input voltage (min) (V) 0.45 High input voltage (max) (V) 3.6 Vout (min) (V) 0.65 Vout (max) (V) 3.6 Data rate (max) (Mbps) 380 IOH (max) (mA) -12 IOL (max) (mA) 12 Supply current (max) (µA) 23 Features Output enable, Overvoltage tolerant inputs, Partial power down (Ioff), Vcc isolation Input type CMOS Output type 3-State Rating Catalog Operating temperature range (°C) -40 to 125
UQFN (RSW) 10 2.52 mm² 1.8 x 1.4
  • Fully configurable dual-rail design allows each port to operate with a power supply range from 0.65V to 3.6V
  • Operating temperature from –40°C to +125°C
  • DIR control input for each channel
  • Glitch-free power supply sequencing
  • Up to 380-Mbps support when translating from 1.8V to 3.3V
  • VCC isolation feature
    • If either VCC input is below 100mV, all I/O outputs are disabled and become high-impedance
  • Ioff supports partial-power-down mode operation
  • Compatible with AVC-family level shifters
  • Latch-up performance exceeds 100 mA per JESD 78, class II
  • ESD protection exceeds JEDEC JS-001
    • 8000-V Human-body model
    • 1000-V Charged-device model
  • Fully configurable dual-rail design allows each port to operate with a power supply range from 0.65V to 3.6V
  • Operating temperature from –40°C to +125°C
  • DIR control input for each channel
  • Glitch-free power supply sequencing
  • Up to 380-Mbps support when translating from 1.8V to 3.3V
  • VCC isolation feature
    • If either VCC input is below 100mV, all I/O outputs are disabled and become high-impedance
  • Ioff supports partial-power-down mode operation
  • Compatible with AVC-family level shifters
  • Latch-up performance exceeds 100 mA per JESD 78, class II
  • ESD protection exceeds JEDEC JS-001
    • 8000-V Human-body model
    • 1000-V Charged-device model

The SN74AXC2T245 is a two-bit noninverting bus transceiver that uses two individually configurable power-supply rails. The device is operational with both VCCA and VCCB supplies as low as 0.65V. The A port is designed to track VCCA, which accepts any supply voltage from 0.65V to 3.6V. The B port is designed to track VCCB, which also accepts any supply voltage from 0.65V to 3.6V. Additionally the SN74AXC2T245 is compatible with a single-supply system.

The SN74AXC2T245 device 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 of the direction-control inputs (DIRx). The SN74AXC2T245 device is designed so the control pin (DIR) is referenced to VCCA.

This device is fully specified for partial-power-down applications using the Ioff current. The Ioff protection circuitry is designed so that no excessive current is drawn from or to an input, output, or combined I/O that is biased to a specific voltage while the device is powered down.

The VCC isolation feature is designed so that if either VCCA or VCCB is less than 100mV, both I/O ports enter a high-impedance state by disabling their outputs.

Glitch-free power supply sequencing allows either supply rail to be powered on or off in any order while providing robust power sequencing performance.

The SN74AXC2T245 is a two-bit noninverting bus transceiver that uses two individually configurable power-supply rails. The device is operational with both VCCA and VCCB supplies as low as 0.65V. The A port is designed to track VCCA, which accepts any supply voltage from 0.65V to 3.6V. The B port is designed to track VCCB, which also accepts any supply voltage from 0.65V to 3.6V. Additionally the SN74AXC2T245 is compatible with a single-supply system.

The SN74AXC2T245 device 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 of the direction-control inputs (DIRx). The SN74AXC2T245 device is designed so the control pin (DIR) is referenced to VCCA.

This device is fully specified for partial-power-down applications using the Ioff current. The Ioff protection circuitry is designed so that no excessive current is drawn from or to an input, output, or combined I/O that is biased to a specific voltage while the device is powered down.

The VCC isolation feature is designed so that if either VCCA or VCCB is less than 100mV, both I/O ports enter a high-impedance state by disabling their outputs.

Glitch-free power supply sequencing allows either supply rail to be powered on or off in any order while providing robust power sequencing performance.
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Technical documentation

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* Data sheet SN74AXC2T245 2-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and Tri-State Outputs datasheet (Rev. A) PDF | HTML 05 Feb 2024
Application note Schematic Checklist - A Guide to Designing With Fixed or Direction Control Translators PDF | HTML 02 Oct 2024
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 Robust and Competitive Wireless Tracking Modules with Logic PDF | HTML 15 Oct 2021
Application brief Translate Voltages for UART (Rev. B) PDF | HTML 04 Aug 2021
Technical article Enabling IIoT to reach beyond the factory floor PDF | HTML 29 Jul 2020

Design & development

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Evaluation board

AXC2T-SMALLPKGEVM — AXC2T small package evaluation module for DTM and RSW package devices

This EVM is designed to support DTM and RSW packages for the AXC and LVC family of DIR controlled bidirectional devices. The AXC and AVC devices belong to the low voltage direction controlled translation family with operating voltage from 0.65V to 3.6V (AXC) and 1.2 to 3.6 (AVC) with 12mA of drive (...)
User guide: PDF
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Simulation model

SN74AXC2T245 IBIS Model

SCEM596.ZIP (30 KB) - IBIS Model
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UQFN (RSW) 10 Ultra Librarian
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