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TXB0604
  • TXB0604
  • TXB0604
  • TXB0604
  • TXB0604

TXB0604

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Four-bit dual-supply, High Speed Bidirectional Voltage Level Translator

Texas Instruments TXB0604 Product Info

1 April 2026 3

Parameters

Bits (#)

4

Data rate (max) (Mbps)

345

Topology

Push-Pull

Direction control (typ)

Auto-direction

Vin (min) (V)

0.9

Vin (max) (V)

2

Vout (min) (V)

1.65

Vout (max) (V)

3.6

Applications

I2S, JTAG, SPI, UART

Features

Edge rate accelerator, Output enable, Vcc isolation

Prop delay (ns)

8.5

Technology family

TXB

Supply current (max) (mA)

37

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Package

SOT-23-THN (DYY)-14-13.692 mm² 4.2 x 3.26

Features

  • 0.9V to 2V on A port and 1.65V to 3.6V on B port (VCCA ≤ VCCB)
  • Maximum data rates:
    • >345Mbps (15pF load)
    • >190Mbps (100pF load)
  • Supports high-speed interfaces such as QSPI, OSPI, eSPI
  • No direction control signal needed
  • VCC isolation feature: if either VCC input is at GND, all outputs are in the high-impedance state
  • Schmitt-trigger inputs allow for slow or noisy inputs
  • Output enable (OE) input circuit referenced to VCCA
  • Latch-up Performance Exceeds 100mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • A Port:
      • 2000V Human-Body Model (A114-B)
      • 1000V Charged-Device Model (C101)
    • B Port:
      • 2000V Human-Body Model (A114-B)
      • 1000V Charged-Device Model (C101)
  • 0.9V to 2V on A port and 1.65V to 3.6V on B port (VCCA ≤ VCCB)
  • Maximum data rates:
    • >345Mbps (15pF load)
    • >190Mbps (100pF load)
  • Supports high-speed interfaces such as QSPI, OSPI, eSPI
  • No direction control signal needed
  • VCC isolation feature: if either VCC input is at GND, all outputs are in the high-impedance state
  • Schmitt-trigger inputs allow for slow or noisy inputs
  • Output enable (OE) input circuit referenced to VCCA
  • Latch-up Performance Exceeds 100mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • A Port:
      • 2000V Human-Body Model (A114-B)
      • 1000V Charged-Device Model (C101)
    • B Port:
      • 2000V Human-Body Model (A114-B)
      • 1000V Charged-Device Model (C101)

Description

The TXB0604 is an 4-bit non-inverting auto-bidirectional translator that uses two separate configurable power-supply rails. This voltage translator/ line redriver can be used to remedy voltage domain mismatches in addition to signal boosting in long-cabling transmission applications.

The TXB0604 leverages a patented design to achieve high data throughput for memory-intensive interfaces like Quad-SPI between BMC and Flash devices without signal integrity losses associated with excessive output parasitic capacitance.

The A port is designed to track VCCA. VCCA accepts any supply voltage from 0.9V to 2V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.65V to 3.6V.

When the OE input is low, all outputs are placed in the high-impedance state. To ensure the high-impedance state during power up or power down, OE must be tied to GND through a pulldown resistor. The current sourcing capability of the driver determines the minimum value of the resistor. The TXB0604 device is designed so the OE input circuit is supplied by VCCA.

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