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4-Bit Bidirectional Voltage-Level Translator For Open-Drain Applications (Rev. C)
Texas Instruments
Description
This 4-bit noninverting translator uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.65 V to 3.6 V. VCCA must be less than or equal to VCCB. The B port is designed to track VCCB. VCCB accepts any supply voltage from 2.3 V to 5.5 V. This allows for low-voltage bidirectional translation between any of the 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes.
Features
1.65 V to 3.6 V on A Port and 2.3 V to 5.5 V on B Port (VCCA ≤ VCCB)No Power-Supply Sequencing Required ? VCCA or VCCB Can Be Ramped FirstLatch-Up Performance Exceeds 100 mA Per JESD 78, Class IIESD Protection Exceeds JESD 22 A Port2000-V Human-Body Model (A114-B)200-V Machine Model (A115-A)1000-V Charged-Device Model (C101) B Port15-kV Human-Body Model (A114-B)200-V Machine Model (A115-A)1000-V Charged-Device Model (C101) IEC 61000-4-2 ESD (B Port)±8-kV Contact Discharge±10-kV Air-Gap Discharge DESCRIPTION/ORDERING INFORMATIONThis 4-bit noninverting translator uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.65 V to 3.6 V. VCCA must be less than or equal to VCCB. The B port is designed to track VCCB. VCCB accepts any supply voltage from 2.3 V to 5.5 V. This allows for low-voltage bidirectional translation between any of the 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes. When the output-enable (OE) input is low, all outputs are placed in the high-impedance state. The TXS0104E is designed so that the OE input circuit is supplied by VCCA. 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.
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