TXB0304_15 Datasheet, PDF (1/25 Pages) Texas Instruments – 4-Bit Bidirectional Level-Shifter/Voltage Translator

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TXB0304
SCES831E – SEPTEMBER 2011 – REVISED NOVEMEBER 2015
TXB0304 4-Bit Bidirectional Level-Shifter/Voltage Translator With Automatic Direction
Sensing
1 Features
•1 Fully Symmetric Supply Voltages, 0.9 V to 3.6 V
on A Port and 0.9 V to 3.6 V
• V_CC Isolation Feature – If Either V_CC Input is at
GND, all Outputs are in High-Impedance State
• OE Input Circuit Referenced to V_CCA
• Low Power Consumption, 5 μA Max (I_CCA or I_CCB)
• I_off Supports Partial-Power-Down Mode Operation
• Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
• ESD Protection Exceeds JESD 22
– 8000 V Human-Body Model (A114-B)
– 1000 V Charged-Device Model (C101)
2 Applications
• Personal Electronics
• Industrial
• Enterprise
• Telecom
3 Description
This 4-bit non-inverting translator uses two separate
configurable power-supply rails. The A port is
designed to track V_CCA. V_CCA accepts any supply
voltage from 0.9 V to 3.6 V. The B port is designed to
track V_CCB. V_CCB accepts any supply voltage from
0.9 V to 3.6 V. This allows for low Voltage
bidirectional translation between 1 V, 1.2 V, 1.5 V, 1.8
V, 2.5 V and 3.3 V voltage nodes. For the TXB0304,
when the output-enable (OE) input is low, all outputs
are placed in the high-impedance state. To ensure
the high-impedance state during power up or power
down, OE should be tied to GND through a pull-down
resistor; the minimum value of the resistor is
determined by the current-sourcing capability of the
driver. The OE device control pin input circuit is
supplied by V_CCA. This device is fully specified for
partial-power-down applications using I_off. The I_off
circuitry disables the outputs, preventing damaging
current backflow through the device when it is
powered down. The only difference between
TXB0304 and TXBN0304 is the OE signal being
active low and active high respectively.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TXB0304
RUT UQFN (12)
RSV UQFN (16)
2.00 mm × 1.70 mm
2.60 mm × 1.80 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Typical Application Block Diagram for TXB0304
V_CCA
V_CCB
Processor
Peripheral
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.