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SN74AXC1T45

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Ein-Bit-Bus-Transceiver mit zwei Versorgungsspannungen

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SN74AXC1T45

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Produktdetails

Technology family AXC Applications GPIO Bits (#) 1 High input voltage (min) (V) 0.455 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) 12 Features Output enable, Overvoltage tolerant inputs, Partial power down (Ioff), Vcc isolation Input type Standard CMOS Output type 3-State, Balanced CMOS, Push-Pull Rating Catalog Operating temperature range (°C) -40 to 125
Technology family AXC Applications GPIO Bits (#) 1 High input voltage (min) (V) 0.455 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) 12 Features Output enable, Overvoltage tolerant inputs, Partial power down (Ioff), Vcc isolation Input type Standard CMOS Output type 3-State, Balanced CMOS, Push-Pull Rating Catalog Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8 SOT-5X3 (DRL) 6 2.56 mm² 1.6 x 1.6 SOT-SC70 (DCK) 6 4.2 mm² 2 x 2.1 X2SON (DEA) 6 1 mm² 1 x 1 X2SON (DTQ) 6 0.8 mm² 1 x 0.8
  • Up and down translation across 0.65 V to 3.6 V
  • Operating temperature: –40°C to +125°C
  • Designed with glitch suppression circuitry to improve power sequencing performance
  • Maximum quiescent current (ICCA + ICCB) of 10µA (85°C maximum) and 16µA (125°C maximum)
  • Up to 500Mbps support when translating from 1.8 to 3.3V
  • VCC isolation feature:
    • If either VCC input is below 100mV, all I/Os outputs are disabled and become high-impedance
  • Ioff supports partial-power-down mode operation
  • Latch-up performance exceeds 100mA per JESD 78, Class II
  • ESD protection exceeds JESD 22:
    • 8000-V human body model
    • 1000-V charged-device model
  • Up and down translation across 0.65 V to 3.6 V
  • Operating temperature: –40°C to +125°C
  • Designed with glitch suppression circuitry to improve power sequencing performance
  • Maximum quiescent current (ICCA + ICCB) of 10µA (85°C maximum) and 16µA (125°C maximum)
  • Up to 500Mbps support when translating from 1.8 to 3.3V
  • VCC isolation feature:
    • If either VCC input is below 100mV, all I/Os outputs are disabled and become high-impedance
  • Ioff supports partial-power-down mode operation
  • Latch-up performance exceeds 100mA per JESD 78, Class II
  • ESD protection exceeds JESD 22:
    • 8000-V human body model
    • 1000-V charged-device model

The SN74AXC1T45 is a single-bit noninverting bus transceiver that uses two separate 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 3.6V. The B port is designed to track VCCB, which also accepts any supply voltage from 0.65 V to 3.6V.

The DIR pin determines the direction of signal propagation. With the DIR pin configured HIGH, translation is from Port A to Port B. With DIR configured LOW, translation is from Port B to Port A. The DIR pin is referenced to VCCA, meaning that its logic-high and logic-low thresholds track with VCCA.

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 100mV, both I/O ports enter a high-impedance state by disabling their outputs.

The glitch suppression circuitry enables either supply rail to be powered on or off in any order, providing robust power sequencing performance.

The SN74AXC1T45 is a single-bit noninverting bus transceiver that uses two separate 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 3.6V. The B port is designed to track VCCB, which also accepts any supply voltage from 0.65 V to 3.6V.

The DIR pin determines the direction of signal propagation. With the DIR pin configured HIGH, translation is from Port A to Port B. With DIR configured LOW, translation is from Port B to Port A. The DIR pin is referenced to VCCA, meaning that its logic-high and logic-low thresholds track with VCCA.

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 100mV, both I/O ports enter a high-impedance state by disabling their outputs.

The glitch suppression circuitry enables either supply rail to be powered on or off in any order, providing robust power sequencing performance.
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Technische Dokumentation

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Typ Titel Datum
* Data sheet SN74AXC1T45 Single-Bit Dual-Supply Bus Transceiver With Configurable Voltage Translation datasheet (Rev. E) PDF | HTML 12 Jan 2024
Application brief Future-Proofing Your Level Shifter Design with TI's Dual Footprint Packages PDF | HTML 05 Sep 2023
Application brief Translate Voltages for MDIO PDF | HTML 16 Jul 2021
EVM User's guide AXC Small-Package Evaluation Module User's Guide (Rev. A) PDF | HTML 12 Jul 2021
Selection guide Voltage Translation Buying Guide (Rev. A) 15 Apr 2021
Application note Low Voltage Translation for SPI, UART, RGMII, JTAG Interfaces (Rev. B) PDF | HTML 29 Mär 2021
Application note Translate Voltages for GPIO PDF | HTML 04 Aug 2020
Technical article Enabling IIoT to reach beyond the factory floor PDF | HTML 29 Jul 2020
Technical article A glitch in your system’s matrix? PDF | HTML 11 Apr 2019
Application brief How to Support 1.8-V Signals Using a 3.3-V LVDS Driver/Receiver + Level-Shifter 28 Dez 2018
Application note Glitch free power sequencing with AXC level translators (Rev. A) 20 Sep 2018
Application note Evaluate SN74AXC1T45DRL Using A Generic EVM 06 Nov 2017

Design und Entwicklung

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Evaluierungsplatine

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Flexibles EVM zur Unterstützung aller Geräte mit 5- bis 8-poligem DCK-, DCT-, DCU-, DRL- oder DBV-Gehäuse.
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Evaluierungsplatine

AVCLVCDIRCNTRL-EVM — Generisches EVM für richtungsgesteuerte bidirektionale Umsetzungsgeräte mit Unterstützung für AVC un

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 (...)

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Simulationsmodell

SN74AXC1T45 IBIS Model (Rev. A)

SCEM581A.ZIP (51 KB) - IBIS Model
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Gehäuse Pins Herunterladen
SOT-23 (DBV) 6 Optionen anzeigen
SOT-5X3 (DRL) 6 Optionen anzeigen
SOT-SC70 (DCK) 6 Optionen anzeigen
X2SON (DEA) 6 Optionen anzeigen
X2SON (DTQ) 6 Optionen anzeigen
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