SN74AXC4T245-Q1

ACTIVE

Product details

Technology Family AXC Applications UART, JTAG, SPI Bits (#) 4 High input voltage (Min) (Vih) 0.455 High input voltage (Max) (Vih) 3.6 Vout (Min) (V) 0.65 Vout (Max) (V) 3.6 IOH (Max) (mA) -12 IOL (Max) (mA) 12 Rating Automotive
Technology Family AXC Applications UART, JTAG, SPI Bits (#) 4 High input voltage (Min) (Vih) 0.455 High input voltage (Max) (Vih) 3.6 Vout (Min) (V) 0.65 Vout (Max) (V) 3.6 IOH (Max) (mA) -12 IOL (Max) (mA) 12 Rating Automotive
TSSOP (PW) 16 22 mm² 5 x 4.4 UQFN (RSV) 16 5 mm² 2.6 x 1.8 WQFN (BQB) 16 9 mm² 3.5 x 2.5
  • AEC-Q100 qualified for automotive applications
  • Available in wettable flank QFN (WBQB) package
  • Fully-configurable dual-rail design allows each port to operate with a power supply range from 0.65 V to 3.6 V
  • Operating temperature from –40°C to +125°C
  • Multiple direction control pins to allow simultaneous up and down translation
  • Glitch-free power supply sequencing
  • Up to 380 Mbps support when translating from 1.8 V to 3.3 V
  • VCC isolation feature:
    • If either VCC input is below 100 mV, 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
  • AEC-Q100 qualified for automotive applications
  • Available in wettable flank QFN (WBQB) package
  • Fully-configurable dual-rail design allows each port to operate with a power supply range from 0.65 V to 3.6 V
  • Operating temperature from –40°C to +125°C
  • Multiple direction control pins to allow simultaneous up and down translation
  • Glitch-free power supply sequencing
  • Up to 380 Mbps support when translating from 1.8 V to 3.3 V
  • VCC isolation feature:
    • If either VCC input is below 100 mV, 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 SN74AXC4T245-Q1 AEC-Q100 qualified device is a four-bit non-inverting bus transceiver that uses two individually configurable power-supply rails. The device is operational with both VCCA and VCCB supplies as low as 0.65 V. The A port is designed to track VCCA, which accepts any supply voltage from 0.65 V to 3.6 V. The B port is designed to track VCCB, which also accepts any supply voltage from 0.65 V to 3.6 V. Additionally the SN74AXC4T245-Q1 is compatible with a single-supply system.

The SN74AXC4T245-Q1 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 (1DIR and 2DIR). The output-enable inputs (1 OE and 2 OE) are used to disable the outputs so the buses are effectively isolated. The SN74AXC4T245-Q1 device is designed so the control pins (xDIR and x OE) are referenced to VCCA.

To ensure the high-impedance state of the level shifter I/Os during power up or power down, the x OE pins should be tied to VCCA through a pull-up resistor.

This device is fully specified for partial-power-down applications using the Ioff current. The Ioff protection circuitry ensures 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 ensures that if either VCCA or VCCB is less than 100 mV, 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 SN74AXC4T245-Q1 AEC-Q100 qualified device is a four-bit non-inverting bus transceiver that uses two individually configurable power-supply rails. The device is operational with both VCCA and VCCB supplies as low as 0.65 V. The A port is designed to track VCCA, which accepts any supply voltage from 0.65 V to 3.6 V. The B port is designed to track VCCB, which also accepts any supply voltage from 0.65 V to 3.6 V. Additionally the SN74AXC4T245-Q1 is compatible with a single-supply system.

The SN74AXC4T245-Q1 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 (1DIR and 2DIR). The output-enable inputs (1 OE and 2 OE) are used to disable the outputs so the buses are effectively isolated. The SN74AXC4T245-Q1 device is designed so the control pins (xDIR and x OE) are referenced to VCCA.

To ensure the high-impedance state of the level shifter I/Os during power up or power down, the x OE pins should be tied to VCCA through a pull-up resistor.

This device is fully specified for partial-power-down applications using the Ioff current. The Ioff protection circuitry ensures 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 ensures that if either VCCA or VCCB is less than 100 mV, 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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Type Title Date
* Data sheet SN74AXC4T245-Q1 Automotive 4-Bit Dual-Supply Bus Transceiver With Configurable Voltage Translation and Tri-State Outputs datasheet (Rev. E) PDF | HTML 01 Dec 2021
Application note Translate Voltages for UART (Rev. B) PDF | HTML 04 Aug 2021
Selection guide Voltage Translation Buying Guide (Rev. A) 15 Apr 2021

Design & development

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

Evaluation board

14-24-LOGIC-EVM — Generic Logic EVM Supporting 14 through 24 Pin PW, DB, D, DW, NS, DYY, and DGV Packages

This EVM is designed to support any logic device that has a D, DW, DB, NS, PW, DYY or DGV package in a 14 to 24 pin count.

User guide: PDF | HTML
Not available on TI.com
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.
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 (...)

Not available on TI.com
Evaluation board

SN74AXC8T245EVM — SN74AXC8T245 Evaluation Module for Direction-Controlled Bidirectional Translation Device

This EVM is designed to support SN74AXC8T245 which is an 8 channel direction-controlled translation device. There is also option of populating 1, 2, 4 channel LVC and AVC direction controlled translation device. It also supports the bus hold and Q1 devices in the same number of channels. The AXC (...)
User guide: PDF
Not available on TI.com
Simulation model

SN74AXC4T245 IBIS Model (Rev. A)

SCEM585A.ZIP (35 KB) - IBIS Model
Package Pins Download
TSSOP (PW) 16 View options
UQFN (RSV) 16 View options
WQFN (BQB) 16 View options

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