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SN74AXCH1T45

ACTIVO

Transceptor de bus de alimentación doble de un bit

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SN74AXCH1T45

ACTIVO
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Detalles del producto

Bits (#) 1 Data rate (max) (Mbps) 500 Topology Push-Pull Vin (min) (V) 0.65 Vin (max) (V) 3.6 Vout (min) (V) 0.65 Vout (max) (V) 3.6 Applications GPIO Features Bus-hold, Output enable, Overvoltage tolerant inputs, Partial power down (Ioff), Vcc isolation Technology family AXC Supply current (max) (mA) 0.014 Rating Catalog Operating temperature range (°C) -40 to 125
Bits (#) 1 Data rate (max) (Mbps) 500 Topology Push-Pull Vin (min) (V) 0.65 Vin (max) (V) 3.6 Vout (min) (V) 0.65 Vout (max) (V) 3.6 Applications GPIO Features Bus-hold, Output enable, Overvoltage tolerant inputs, Partial power down (Ioff), Vcc isolation Technology family AXC Supply current (max) (mA) 0.014 Rating Catalog Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 6 8.12 mm² (2.9 mm × 2.8 mm) USON (DRY) 6 1.45 mm² (1.45 mm × 1 mm) SOT-SC70 (DCK) 6 4.2 mm² (2 mm × 2.1 mm) X2SON (DTQ) 6 0.8 mm² (1 mm × 0.8 mm)
  • 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: –40°C to +125°C
  • Glitch-Free Power Supply Sequencing
  • Bus-hold on Data Inputs Eliminates the Need for External Pullup or Pulldown Resistors
  • Maximum Quiescent Current (ICCA + ICCB) of 10 µA (85°C Maximum) and 16 µA (125°C Maximum)
  • Up to 500-Mbps Support When Translating from 1.8 to 3.3 V
  • VCC Isolation Feature
    • If Either VCC Input is Below 100 mV, All I/Os Outputs are Disabled and Become High-Impedance
  • Ioff Supports Partial-Power-Down Mode Operation
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 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 0.65 V to 3.6 V
  • Operating Temperature: –40°C to +125°C
  • Glitch-Free Power Supply Sequencing
  • Bus-hold on Data Inputs Eliminates the Need for External Pullup or Pulldown Resistors
  • Maximum Quiescent Current (ICCA + ICCB) of 10 µA (85°C Maximum) and 16 µA (125°C Maximum)
  • Up to 500-Mbps Support When Translating from 1.8 to 3.3 V
  • VCC Isolation Feature
    • If Either VCC Input is Below 100 mV, All I/Os Outputs are Disabled and Become High-Impedance
  • Ioff Supports Partial-Power-Down Mode Operation
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 8000-V Human Body Model
    • 1000-V Charged-Device Model

The SN74AXCH1T45 is a single-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 0.65 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 SN74AXCH1T45 is compatible with a single-supply system.

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.

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended. If a supply is present for VCCA or VCCB, the bus-hold circuitry always remains active on the A or B inputs respectively, independent of the state of the direction control pin.

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 SN74AXCH1T45 is a single-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 0.65 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 SN74AXCH1T45 is compatible with a single-supply system.

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.

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended. If a supply is present for VCCA or VCCB, the bus-hold circuitry always remains active on the A or B inputs respectively, independent of the state of the direction control pin.

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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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos SN74AXCH1T45 Single-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation, Tri-State Outputs, and Bus-Hold Inputs datasheet (Rev. C) PDF | HTML 9/09/2020
Nota sobre la aplicación Schematic Checklist - A Guide to Designing With Fixed or Direction Control Translators PDF | HTML 2/10/2024
Nota sobre la aplicación Schematic Checklist - A Guide to Designing with Auto-Bidirectional Translators PDF | HTML 12/07/2024
Nota sobre la aplicación Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) PDF | HTML 3/07/2024
Guía de selección Voltage Translation Buying Guide (Rev. A) 15/04/2021
Nota sobre la aplicación Low Voltage Translation for SPI, UART, RGMII, JTAG Interfaces (Rev. B) PDF | HTML 29/03/2021
Nota sobre la aplicación Glitch free power sequencing with AXC level translators (Rev. A) 20/09/2018
Nota sobre la aplicación An Overview of Bus-Hold Circuit and the Applications (Rev. B) 17/09/2018

Diseño y desarrollo

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Placa de evaluación

5-8-LOGIC-EVM — Módulo de evaluación de lógico genérico para encapsulados DCK, DCT, DCU, DRL y DBV,de 5- a 8-pines

EVM flexible diseñado para admitir cualquier dispositivo que tenga un encapsulado DCK, DCT, DCU, DRL o DBV y entre 5 y 8 pines.
Guía del usuario: PDF
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Placa de evaluación

AVCLVCDIRCNTRL-EVM — EVM genérico para dispositivo de traducción bidireccional controlado por dirección compatible con AV

El módulo de evaluación genérico está diseñado para admitir dispositivos de conversión controlados por dirección de semiconductor de óxido metálico complementario de baja tensión y AVC de uno, dos, cuatro y ocho canales. También es compatible con la retención de bus y los dispositivos de automoción (...)

Guía del usuario: PDF
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Modelo de simulación

SN74AXCH1T45 IBIS Model

SCEM584.ZIP (27 KB) - Modelo IBIS
Productos y hardware compatibles
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
SOT-23 (DBV) 6 Ultra Librarian
USON (DRY) 6 Ultra Librarian
SOT-SC70 (DCK) 6 Ultra Librarian
X2SON (DTQ) 6 Ultra Librarian
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