TXB0108 Series

8-Bit Bidirectional Voltage-Level Shifter with Auto Direction Sensing and +/-15-kV ESD Protect

Catalog

8-Bit Bidirectional Voltage-Level Shifter with Auto Direction Sensing and +/-15-kV ESD Protect

Part	Supplier Device Package	Translator Type	Channels per Circuit	Voltage - VCCA [Min]	Voltage - VCCA [Max]	Number of Circuits	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - VCCB [Min]	Voltage - VCCB [Max]	Data Rate	Features	Mounting Type	Output Type	Channel Type	Package / Case
Texas Instruments TXB0108YZPR	20-DSBGA	Voltage Level	8	1.2 V	3.6 V	1	85 °C	-40 °C	1.65 V	5.5 V	100 Mbps	Auto-Direction Sensing	Surface Mount	Non-Inverted Tri-State	Bidirectional
Texas Instruments TXB0108NMER	20-DSBGA	Voltage Level	8	1.2 V	3.6 V	1	85 °C	-40 °C	1.65 V	5.5 V	100 Mbps		Surface Mount	Non-Inverted Tri-State	Bidirectional
Texas Instruments TXB0108RGYR	20-VQFN (3.5x4.5)	Voltage Level	8	1.2 V	3.6 V	1	85 °C	-40 °C	1.65 V	5.5 V	100 Mbps	Auto-Direction Sensing	Surface Mount	Non-Inverted Tri-State	Bidirectional	20-VFQFN Exposed Pad

Catalog

8-Bit Bidirectional Voltage-Level Shifter with Auto Direction Sensing and +/-15-kV ESD Protect

Key Features

• 1.2V to 3.6V on A Port and 1.65V to 5.5V on B Port (VCCA ≤ VCCB)VCC Isolation Feature – If Either VCC Input Is at GND, All Outputs Are in the High-Impedance StateOE Input Circuit Referenced to VCCALow Power Consumption, 4µA Max ICCIoff Supports Partial-Power-Down Mode OperationLatch-Up Performance Exceeds 100mA Per JESD 78, Class IIESD Protection Exceeds JESD 22A Port2000V Human-Body Model (A114-B)1000V Charged-Device Model (C101)B Port±15kV Human-Body Model (A114-B)±8kV Human-Body Model (A114-B) (YZP Package Only)1000V Charged-Device Model (C101)1.2V to 3.6V on A Port and 1.65V to 5.5V on B Port (VCCA ≤ VCCB)VCC Isolation Feature – If Either VCC Input Is at GND, All Outputs Are in the High-Impedance StateOE Input Circuit Referenced to VCCALow Power Consumption, 4µA Max ICCIoff Supports Partial-Power-Down Mode OperationLatch-Up Performance Exceeds 100mA Per JESD 78, Class IIESD Protection Exceeds JESD 22A Port2000V Human-Body Model (A114-B)1000V Charged-Device Model (C101)B Port±15kV Human-Body Model (A114-B)±8kV Human-Body Model (A114-B) (YZP Package Only)1000V Charged-Device Model (C101)

Description

This 8-bit noninverting translator uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.2V to 3.6V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.65V to 5.5V. This allows for universal low-voltage bidirectional translation between any of the 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5V voltage nodes. VCCA should not exceed VCCB. When the output-enable (OE) input is low, all outputs are placed in the high-impedance state. The TXB0108 is designed so that the OE input circuit is supplied by VCCA. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. To ensure the high-impedance state during power-up or power-down, OE should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by the current-sourcing capability of the driver. This 8-bit noninverting translator uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.2V to 3.6V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.65V to 5.5V. This allows for universal low-voltage bidirectional translation between any of the 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5V voltage nodes. VCCA should not exceed VCCB. When the output-enable (OE) input is low, all outputs are placed in the high-impedance state. The TXB0108 is designed so that the OE input circuit is supplied by VCCA. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. To ensure the high-impedance state during power-up or power-down, OE should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by the current-sourcing capability of the driver.