FXL4245: Low Voltage Dual Supply 8-Bit Signal Translator with Configurable Voltage Supplies and Signal Levels and 3-STATE Outputs

The FXL4245 is a configurable dual-voltage-supply translator designed for bi-directional voltage translation of signals between two voltage 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. Both ports are designed to accept supply voltage levels from 1.1V to 3.6V. 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 3-state until both VCCs reach active levels, allowing either VCC to be powered-up first. The device also contains power-down control circuits that place the device in 3-state if either VCC is removed. The Transmit/Receive (T/R) input determines the direction of data flow through the device. The OE input, when HIGH, disables both the A and B ports by placing them in a 3-state condition. The FXL4245 is designed with the control pins (T/R and OE) supplied by VCCA.

Features

• Bi-Directional Interface between Two Levels from 1.1V to 3.6V
• Fully Configurable, Inputs Track V_CC Level
• Non-Preferential Power-up; Either V_CC May Be Powered-up First
• Outputs Remain in 3-State until Active V_CC Level is Reached
• Outputs Remain in 3-State until Active V_CC Level is Reached
• Outputs Switch to 3-State if Either V_CC is at GND
• Power-Off Protection
• Control Inputs (T/R, OE) Levels are Referenced To V_CCA Voltage
• Packaged in 24-Pin MLP
• ESD Protection Exceeds
• - 4kV Human Body Model (per JESD22-A114 & Mil Std 883e 3015.7)
• - 8kV Human Body Model I/O to GND (per JESD22-A114 & Mil Std 883e 3015.7)
• - 1kV Charge Device Model (per ESD STM 5.3)
• - 200V Machine Model (per JESD22-A115 & ESD STM5.2)

Application Notes