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Automotive 4-bit dual-supply bus transceiver w/ configurable voltage translation, 3-state output

SN74AXC4T245-Q1

ACTIVE

Product details

Parameters

Technology Family AXC Applications UART, JTAG, SPI Bits (#) 4 High input voltage (Min) (Vih) 0.455 High input voltage (Max) (Vih) 3.6 Output voltage (Min) (V) 0.65 Output voltage (Max) (V) 3.6 IOH (Max) (mA) -12 IOL (Max) (mA) 12 Rating Automotive open-in-new Find other Direction-controlled voltage translators

Package | Pins | Size

TSSOP (PW) 16 22 mm² 5 x 4.4 UQFN (RSV) 16 5 mm² 2.6 x 1.8 WQFN (BQB) 16 open-in-new Find other Direction-controlled voltage translators

Features

  • AEC-Q100 Qualified for automotive applications
  • 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

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Description

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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Information

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Preproduction samples are available (PCAXC4T245QBQBRQ1). Request now

Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet SN74AXC4T245-Q1 Automotive qualified dual-supply transceiver datasheet (Rev. B) Jul. 13, 2020
Selection guides Voltage translation buying guide Jun. 13, 2019

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
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
EVALUATION BOARDS Download
document-generic User guide
20
Description
Flexible EVM designed to support any logic or translation device that has a BQA, BQB, RGY (14-24 pin), RSV, RJW, or RHL package.
Features
  • Board design allows for versatility in evaluation
  • Supports a wide-range of logic and translation devices with included dual supply support
  • Board has 9 sections that can be broken apart for a smaller form factor
EVALUATION BOARDS Download
document-generic User guide
20
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
EVALUATION BOARDS Download
document-generic User guide
20
Description

This EVM is designed to support SN74AXC8T245 in the RJW package and SN74AXC1T45 in DEA and the DTQ packages. There is also option of populating the SN74AVC4T245 in the RSV package. It is also designed to support the bus hold and Q1 devices for the respective channel counts.

The AXC devices belong to (...)

Features
  • High speed SMB connector available
  • Ground port for each header pin supports high speed measurement
  • DIR and OE pin have the option of 10K ohm resistor pullup or pulldown
  • Layout optimized for high speed connectivity
  • Highlights the Small Package technology of TI
EVALUATION BOARDS Download
document-generic User guide
20
Description
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 (...)
Features
  • High speed SMB connector available
  • Gnd port for each header pin supports high speed measurement
  • DIR and OE pin have 10K ohm pulldown built in
  • Layout optimized for high speed connectivity
  • Device supports 2 DIR pins each controlling  4 channel bank

Design tools & simulation

SIMULATION MODELS Download
SCEM585A.ZIP (35 KB) - IBIS Model

CAD/CAE symbols

Package Pins Download
TSSOP (PW) 16 View options
UQFN (RSV) 16 View options
WQFN (BQB) 16 View options

Ordering & quality

Support & training

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