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SN74LXCH1T45

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Single-bit dual-supply transceiver with configurable voltage-level shifting

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Data sheet

SN74LXCH1T45

ACTIVE
Data sheet Order now

Product details

Bits (#) 1 Data rate (max) (Mbps) 420 Topology Push-Pull Vin (min) (V) 1.1 Vin (max) (V) 5.5 Vout (min) (V) 1.1 Vout (max) (V) 5.5 Applications GPIO Features Bus-hold, Integrated pulldown resistors, Output enable, Overvoltage tolerant inputs, Partial power down (Ioff), Vcc disconnect, Vcc isolation Prop delay (ns) 11 Technology family LXC Supply current (max) (mA) 0.006 Rating Catalog Operating temperature range (°C) -40 to 125
Bits (#) 1 Data rate (max) (Mbps) 420 Topology Push-Pull Vin (min) (V) 1.1 Vin (max) (V) 5.5 Vout (min) (V) 1.1 Vout (max) (V) 5.5 Applications GPIO Features Bus-hold, Integrated pulldown resistors, Output enable, Overvoltage tolerant inputs, Partial power down (Ioff), Vcc disconnect, Vcc isolation Prop delay (ns) 11 Technology family LXC Supply current (max) (mA) 0.006 Rating Catalog Operating temperature range (°C) -40 to 125
SOT-SC70 (DCK) 6 4.2 mm² 2 x 2.1 USON (DRY) 6 1.45 mm² 1.45 x 1 X2SON (DTQ) 6 0.8 mm² 1 x 0.8
  • Fully configurable dual-rail design allows each port to operate from 1.1 V to 5.5 V
  • Robust, glitch-free power supply sequencing
  • Up to 420-Mbps support for 3.3 V to 5.0 V
  • Bus hold on data inputs eliminates the need for external pull-up and pull-down resistors
  • Schmitt-trigger control inputs allow for slow or noisy inputs
  • Control inputs with integrated static pull-down resistors allow for floating control inputs
  • High drive strength (up to 32 mA at 5 V)
  • Low power consumption
    • 3-µA maximum (25°C)
    • 6-µA maximum (–40°C to 125°C)
  • VCC isolation and VCC disconnect feature
    • If either VCC supply is < 100 mV all I/O’s become high-impedance
    • Ioff-float supports VCC disconnect operation
  • Ioff supports partial-power-down mode operation
  • Compatible with LVC family level shifters
  • Control logic (DIR) are referenced to VCCA
  • Operating temperature from –40°C to +125°C
  • Latch-up performance exceeds 100 mA per JESD 78, class II
  • ESD protection exceeds JESD 22
    • 4000-V human-body model
    • 1000-V charged-device model
  • Fully configurable dual-rail design allows each port to operate from 1.1 V to 5.5 V
  • Robust, glitch-free power supply sequencing
  • Up to 420-Mbps support for 3.3 V to 5.0 V
  • Bus hold on data inputs eliminates the need for external pull-up and pull-down resistors
  • Schmitt-trigger control inputs allow for slow or noisy inputs
  • Control inputs with integrated static pull-down resistors allow for floating control inputs
  • High drive strength (up to 32 mA at 5 V)
  • Low power consumption
    • 3-µA maximum (25°C)
    • 6-µA maximum (–40°C to 125°C)
  • VCC isolation and VCC disconnect feature
    • If either VCC supply is < 100 mV all I/O’s become high-impedance
    • Ioff-float supports VCC disconnect operation
  • Ioff supports partial-power-down mode operation
  • Compatible with LVC family level shifters
  • Control logic (DIR) are referenced to VCCA
  • Operating temperature from –40°C to +125°C
  • Latch-up performance exceeds 100 mA per JESD 78, class II
  • ESD protection exceeds JESD 22
    • 4000-V human-body model
    • 1000-V charged-device model

The SN74LXCH1T45 is an 1-bit, dual-supply noninverting bidirectional voltage level translation device with bus-hold circuitry. The I/O pin A and control pin (DIR) are referenced to VCCA logic levels, and the I/O pin B is referenced to VCCB logic levels. The A pin is able to accept I/O voltages ranging from 1.1 V to 5.5 V, while the B port can accept I/O voltages from 1.1 V to 5.5 V. A high on DIR allows data transmission from A to B and a low on DIR allows data transmission from B to A. See Device Functional Modes for a summary of the operation of the control logic.

The SN74LXCH1T45 is an 1-bit, dual-supply noninverting bidirectional voltage level translation device with bus-hold circuitry. The I/O pin A and control pin (DIR) are referenced to VCCA logic levels, and the I/O pin B is referenced to VCCB logic levels. The A pin is able to accept I/O voltages ranging from 1.1 V to 5.5 V, while the B port can accept I/O voltages from 1.1 V to 5.5 V. A high on DIR allows data transmission from A to B and a low on DIR allows data transmission from B to A. See Device Functional Modes for a summary of the operation of the control logic.
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Technical documentation

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* Data sheet SN74LXCH1T45 Single-Bit Dual-Supply Bus Transceiver With Configurable Voltage Translation, 3-State Ouputs, and Bus-Hold Inputs datasheet PDF | HTML 01 Apr 2022
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

Design & development

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

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 (...)

User guide: PDF
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Simulation model

SN74LXC1T45 IBIS Model

SCEM790.ZIP (56 KB) - IBIS Model
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Package Pins CAD symbols, footprints & 3D models
SOT-SC70 (DCK) 6 Ultra Librarian
USON (DRY) 6 Ultra Librarian
X2SON (DTQ) 6 Ultra Librarian
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