Datasheet

1
YZP PACKAGE
(BOTTOM VIEW)
GND
A2
B1
A1
V
CCA
2
5
3
4
8
6
1
7
B2
OE
V
CCB
2
3
4
8
7
6
5
B1
V
CCB
OE
A1
B2
V
CCA
GND
A2
DCT OR DCU PACKAGE
(TOP VIEW)
B1
A1
C1
D1 D2
C2
B2
A2
TXB0102
www.ti.com
SCES641B MAY 2007REVISED MAY 2012
2-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
WITH AUTO DIRECTION SENSING AND ±15-kV ESD PROTECTION
Check for Samples: TXB0102
1
FEATURES
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
2
Available in the Texas Instruments NanoFree™
ESD Protection Exceeds JESD 22
Packages
A Port
1.2 V to 3.6 V on A Port and 1.65 V to 5.5 V on
B Port (V
CCA
V
CCB
)
2500-V Human-Body Model (A114-B)
V
CC
Isolation Feature – If Either V
CC
Input Is at
200-V Machine Model (A115-A)
GND, All Outputs Are in the High-Impedance
1500-V Charged-Device Model (C101)
State
B Port
OE Input Circuit Referenced to V
CCA
15-kV Human-Body Model (A114-B)
Low Power Consumption, 4-μA Max I
CC
200-V Machine Model (A115-A)
I
off
Supports Partial-Power-Down Mode
1500-V Charged-Device Model (C101)
Operation
A. Pull up resistors are not required on both sides for Logic I/O.
B. If pull up or pull down resistors are needed, the resistor value must be over 50 kΩ.
C. 50 kΩ is a safe recommended value, if the customer can accept higher Vol or lower Voh, smaller pull up or pull down
resistor is allowed, the draft estimation is Vol = Vccout × 4.5k/(4.5k + Rpu) and Voh = Vccout × Rdw/(4.5k + Rdw).
D. If pull up resistors are needed, please refer to the TXS0102 or contact TI.
E. For detailed information, please refer to application note SCEA043.
DESCRIPTION/ORDERING INFORMATION
This 2-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 1.2 V to 3.6 V. The B port is designed to track V
CCB
. V
CCB
accepts any supply voltage from 1.65 V to 5.5 V. This allows for universal low-voltage bidirectional translation
between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes. V
CCA
should not exceed V
CCB
.
When the output-enable (OE) input is low, all outputs are placed in the high-impedance state.
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.
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.
NanoFree™ package technology is a major breakthrough in IC packaging concepts, using the die as the
package.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2NanoFree is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2007–2012, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.

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