SCES983 October   2025 TXB0604

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Electrical Characteristics
    5. 5.5 Switching Characteristics, VCCA = 0.9V
    6. 5.6 Switching Characteristics, VCCA = 1.2V
    7. 5.7 Switching Characteristics, VCCA = 1.5V ± 0.1V
    8. 5.8 Switching Characteristics, VCCA = 1.8V ± 0.15V
    9. 5.9 Switching Characteristics: Tsk, TMAX (-40°C to 125°C) 
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Architecture
      2. 7.3.2 Input Driver Requirements
      3. 7.3.3 Output Load Considerations
      4. 7.3.4 Enable and Disable
      5. 7.3.5 Pullup or Pulldown Resistors on I/O Lines
      6. 7.3.6 Dummy Cycles
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
  10. 9 Power Supply Recommendations
  11. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  12. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Support Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  13. 12Revision History
  14. 13Mechanical, Packaging, and Orderable Information

3 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.

Package Information
PART NUMBER PACKAGE(1) BODY SIZE (NOM)
TXB0604PW TSSOP (14) 5.00mm × 4.40mm
TXB0604RGY VQFN (14) 3.50mm x 3.50mm
TXB0604RWB X2QFN (12) 1.6mm x 1.6mm
TXB0604RUT UQFN (12) 2.00mm x 1.70mm
TXB0604DYY SOT23-THN (14) 4.20mm × 3.26mm
(1) For all available packages, see the orderable addendum at the end of the datasheet.
TXB0604 Typical Application Block Diagram for TXB0604 Typical Application Block Diagram for TXB0604