Product
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TXV0108
  • TXV0108
  • TXV0108
  • TXV0108

TXV0108

ACTIVE

Dual-supply direction-controlled eight-channel voltage translator

Texas Instruments TXV0108 Product Info

1 April 2026 0

Parameters

Bits (#)

8

Data rate (max) (Mbps)

500

Topology

Push-Pull

Direction control (typ)

Direction-controlled

Vin (min) (V)

1.14

Vin (max) (V)

3.6

Vout (min) (V)

1.14

Vout (max) (V)

3.6

Applications

GPIO, JTAG, RGMII, SPI, UART

Features

Output damping resistors, Output enable, Overvoltage tolerant inputs, Partial power down (Ioff), Vcc disconnect, Vcc isolation, Wettable flanks package

Prop delay (ns)

2.3

Technology family

TXV

Supply current (max) (mA)

0.022

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Package

VQFN (RGY)-24-19.25 mm² 5.5 x 3.5

Features

  • Configurable design allows each port to operate with a power supply range from 1.14V to 3.6V
  • Supports up to 500Mbps for 1.65V to 3.6V
  • Meets RGMII 2.0 timing specifications:
    • < 750ps rise and fall time
    • < ± 5 % duty cycle distortion
    • < ± 400 ps channel to channel skew
    • Up to 250Mbps/Channel

  • Integrated 10 Ω damping output resistor to minimize signal reflections

  • High drive strength (up to 12mA at 3.6V)

  • Fully configurable symmetric dual-rail design
  • Optimal signal integrity performance with 390ps peak-to-peak jitter for 1.8V to 3.3V
  • Features VCC isolation and VCC disconnect
  • Ioff supports partial-power-down mode operation
  • Latch-up performance exceeds 100mA per JESD 78, Class II
  • ESD protection exceeds JESD 22:
    • 2000V Human-Body Model
    • 1000V Charged-Device Model
  • Low power consumption:
    • 10µA maximum (25°C)
    • 20µA maximum (–40°C to 125°C)
  • Operating temperature from –40°C to +125°C
  • Pin compatible with SN74AVC8T245 (VQFN)
  • Configurable design allows each port to operate with a power supply range from 1.14V to 3.6V
  • Supports up to 500Mbps for 1.65V to 3.6V
  • Meets RGMII 2.0 timing specifications:
    • < 750ps rise and fall time
    • < ± 5 % duty cycle distortion
    • < ± 400 ps channel to channel skew
    • Up to 250Mbps/Channel

  • Integrated 10 Ω damping output resistor to minimize signal reflections

  • High drive strength (up to 12mA at 3.6V)

  • Fully configurable symmetric dual-rail design
  • Optimal signal integrity performance with 390ps peak-to-peak jitter for 1.8V to 3.3V
  • Features VCC isolation and VCC disconnect
  • Ioff supports partial-power-down mode operation
  • Latch-up performance exceeds 100mA per JESD 78, Class II
  • ESD protection exceeds JESD 22:
    • 2000V Human-Body Model
    • 1000V Charged-Device Model
  • Low power consumption:
    • 10µA maximum (25°C)
    • 20µA maximum (–40°C to 125°C)
  • Operating temperature from –40°C to +125°C
  • Pin compatible with SN74AVC8T245 (VQFN)

Description

The TXV0108 is an 8-bit, dual-supply direction controlled low-skew, low-jitter voltage translation device. This device can be used for redriving, voltage translation, and power isolation when implementing skew sensitive interface, such as RGMII between Ethernet MAC and PHY devices. The Ax I/O pins and control pins (DIR, OE) are referenced to VCCA logic levels, and Bx I/O pins are referenced to VCCB logic levels. This device has improved channel-to-channel skew, duty cycle distortion and symmetric rise and fall time for applications requiring strict timing conditions.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, thus preventing damaging current backflow through the device when it is powered down.

The VCC isolation feature is designed so that if either VCC supply is at or near 0V both ports will switch to a high-impedance state. This feature enables power isolation for communications across multiple MACs and PHYs, and is beneficial in situations where MACs and PHYs are powered up asynchronously preventing current backflow between devices.

A High on DIR allows data transmission from A to B while a Low on DIR allows data transmission from B to A when OE is set to Low. When OE is set to High, both Ax and Bx pins will be forced into a high-impedance state. See Device Functional Modes for a summary of the operation of the control logic.

The TXV0108 is an 8-bit, dual-supply direction controlled low-skew, low-jitter voltage translation device. This device can be used for redriving, voltage translation, and power isolation when implementing skew sensitive interface, such as RGMII between Ethernet MAC and PHY devices. The Ax I/O pins and control pins (DIR, OE) are referenced to VCCA logic levels, and Bx I/O pins are referenced to VCCB logic levels. This device has improved channel-to-channel skew, duty cycle distortion and symmetric rise and fall time for applications requiring strict timing conditions.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, thus preventing damaging current backflow through the device when it is powered down.

The VCC isolation feature is designed so that if either VCC supply is at or near 0V both ports will switch to a high-impedance state. This feature enables power isolation for communications across multiple MACs and PHYs, and is beneficial in situations where MACs and PHYs are powered up asynchronously preventing current backflow between devices.

A High on DIR allows data transmission from A to B while a Low on DIR allows data transmission from B to A when OE is set to Low. When OE is set to High, both Ax and Bx pins will be forced into a high-impedance state. See Device Functional Modes for a summary of the operation of the control logic.

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