FXLA102: Low-Voltage Dual-Supply 2-Bit Voltage Translator with Auto-Direction Sensing

The FXLA102 is a configurable dual-voltage-supply translator designed for both uni-directional and bi-directional voltage translation between two logic levels. The device allows translation between voltages as high as 3.6V to as low as 1.1V. The A port tracks the VCCA level, and the B port tracks the VCCB level. This allows for bi-directional voltage translation over a variety of voltage levels: 1.2V, 1.5V, 1.8V, 2.5V and 3.3V. The device remains in three-state as long as either VCC=0V, allowing either VCC to be powered up first. Internal power-down control circuits place the device in 3-state if either VCCs is removed.

The /OE input, when HIGH, disables both the A and B ports by placing them in a 3-state condition. The /OE input is supplied by VCCA.

The FXLA102 supports bi-directional translation without the need for a direction control pin. The two ports of the device have auto-direction sense capability. Either port may sense an input signal and transfer it as an output signal to the other port.

Features

• Bi-Directional Interface between Two Levels: from 1.1V to 3.6V
• Fully Configurable: Inputs and Outputs Track V_CCA Level
• Non-Preferential Power-Up; Either V_CCA May Be Powered Up First
• Outputs Switch to 3-State if Either V_CCA is at GND
• Power-Off Protection
• Bus-Hold on Data Inputs Eliminates the Need for Pull-Up Resistors; Do Not Use Pull-Up Resistors on A or B Ports
• Control Input (/OE) Referenced to V_CCA Voltage
• Packaged in MicroPak™-8 (1.6mm x 1.6mm)
• Direction Control Not Necessary
• 100Mbps Throughput when Translating Between 1.8V and 2.5V
• ESD Protection Exceeds:
  • 15kV HBM (B port I/O to GND)(per JESD22-A114 & Mil Std 883e 3015.7)
  • 8kV HBM (A port I/O to GND)(per JESD22-A114 & Mil Std 883e 3015.7)
  • 2kV CDM (per ESD STM 5.3)
• 15kV HBM (B port I/O to GND)(per JESD22-A114 & Mil Std 883e 3015.7)
• 8kV HBM (A port I/O to GND)(per JESD22-A114 & Mil Std 883e 3015.7)
• 2kV CDM (per ESD STM 5.3)

Application Notes