onsemi FXMAR2104UMX

The FXMAR2104UMX is a 4-bit high-performance, configurable dual-voltage supply, open-drain translator designed for bi-directional voltage translation over a wide range of input and output voltage levels. It is particularly suited for applications using the I²C-Bus® interface, ensuring compatibility with I²C device specification voltage levels. The device features automatic direction-sense capability, eliminating the need for direction control, and includes internal 10KΩ pull-up resistors. It operates in both push-pull and open-drain environments and supports standard-mode and fast-mode I²C-Bus devices, including clock stretching and multi-master configurations.

• Bi-Directional Interface between Any Two Levels: 1.65V to 5.5V
• Automatic Direction-Sense Capability
• Internal 10KΩ Pull-Up Resistors
• No System GPIO Resources Required when OE Tied to V_CCA
• I²C 400pF Buffer / Repeater and I²C-Bus Isolation
• Works in Both Push-Pull and Open-Drain Environments
• Supports Standard-Mode and Fast-Mode I²C-Bus Devices, Including Clock Stretching and Multi-Master Configurations
• Non-Preferential Power-Up; Either V_CC May Be Powered-Up First
• Outputs Switch to 3-State if Either V_CC is at GND
• Tolerant Output Enable: 5V

The FXMAR2104UMX is versatile and suitable for various applications, particularly those requiring bi-directional voltage translation. Key applications include:

• I²C-Bus interface applications
• GPIO voltage translation
• System-level voltage isolation
• Buffering and repeating signals in I²C-Bus systems
• Multi-master I²C-Bus configurations

1. What is the FXMAR2104UMX used for?

   The FXMAR2104UMX is used for bi-directional voltage translation over a wide range of input and output voltage levels, particularly in I²C-Bus interface applications.

2. What is the operating voltage range of the FXMAR2104UMX?

   The operating voltage range for both V_CCA and V_CCB is from 1.65V to 5.5V.

3. Does the FXMAR2104UMX require direction control?

   No, the FXMAR2104UMX features automatic direction-sense capability, eliminating the need for direction control.

4. What type of output does the FXMAR2104UMX have?

   The FXMAR2104UMX has open-drain and tri-state outputs.

5. What is the maximum data rate supported by the FXMAR2104UMX?

   The maximum data rate supported is 26MHz.

6. What is the operating temperature range of the FXMAR2104UMX?

   The operating temperature range is -40°C to 85°C (TA).

7. Does the FXMAR2104UMX have built-in pull-up resistors?
8. What kind of ESD protection does the FXMAR2104UMX offer?

   The FXMAR2104UMX offers 5kV HBM ESD (per JESD22-A114) and 2kV CDM (per JESD22-C101) ESD protection.

9. How does the FXMAR2104UMX handle power-up sequences?

   The FXMAR2104UMX allows non-preferential power-up, meaning either V_CC can be powered-up first.

10. What happens to the outputs if either V_CC is at GND?

    If either V_CC is at GND, the outputs switch to a 3-state condition.