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Texas Instruments SN74LXCH1T45 Single-Bit Dual-Supply Transceiver

Texas Instruments SN74LXCH1T45 Single-Bit Dual-Supply Transceiver is a non-inverting bi-directional 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 can accept I/O voltages ranging from 1.1V to 5.5V, while the B port can accept I/O voltages from 1.1V to 5.5V. A high DIR of the Texas Instruments SN74LXCH1T45 allows data transmission from A to B, and a low DIR allows data transmission from B to A.

Features

  • A fully configurable dual-rail design allows each port to operate from 1.1V to 5.5V
  • Robust, glitch-free power supply sequencing
  • Up to 420Mbps support for 3.3V to 5.0V
  • 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 32mA at 5V)
  • Low power consumption
    • 3µA maximum (25°C)
    • 6µA maximum (–40°C to 125°C)
  • VCC isolation and VCC disconnect feature
  • If either VCC supply is < 100mV, 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) is referenced to VCCA
  • Operating temperature from –40°C to +125°C
  • Latch-up performance exceeds 100mA per JESD 78, class II
  • ESD protection exceeds JESD 22
    • 4000V human-body model
    • 1000V charged-device model

Applications

  • Eliminate slow or noisy input signals
  • Driving indicator LEDs or buzzers
  • Debouncing a mechanical switch
  • General purpose I/O level shifting

Functional Block Diagram

Block Diagram - Texas Instruments SN74LXCH1T45 Single-Bit Dual-Supply Transceiver

Related Development Tools

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Publicado: 2022-05-09 | Atualizado: 2022-10-10