1
FEATURES TYPICAL LEVEL-SHIFTER
DCT OR DCU PACKAGE
(TOP VIEW)
1
B1
8
2
7
V
CCB
3 6
OE
4
5
B2
GND
V
CCA
A2 A1
YZP PACKAGE
(BOTTOM VIEW)
A2
5
4
A1
3 6
OE
V
CCA
2
7
V
CCB
GND
8
B1
1
B2
A1
B1
C1
D1
A2
B2
C2
D2
DESCRIPTION/ORDERING INFORMATION
TXS0102
www.ti.com
.............................................................................................................................................. SCES640B – JANUARY 2007 – REVISED JANUARY 2009
2-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS
APPLICATIONS
2
• No Direction-Control Signal Needed
• I
2
C/SMBus
• Max Data Rates
• UART
– 24 Mbps (Push Pull)
• GPIO
– 2 Mbps (Open Drain)
• Available in the Texas Instruments NanoFree™
Package
• 1.65 V to 3.6 V on A port and 2.3 V to 5.5 V on
B port (V
CCA
≤ V
CCB
)
• V
CC
Isolation Feature – If Either V
CC
Input Is at
GND, Both Ports Are in the High-Impedance
State
• No Power-Supply Sequencing Required –
Either V
CCA
or V
CCB
Can Be Ramped First
• I
off
Supports Partial-Power-Down Mode
Operation
• Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
• ESD Protection Exceeds JESD 22
– A Port
– 2500-V Human-Body Model (A114-B)
– 250-V Machine Model (A115-A)
– 1500-V Charged-Device Model (C101)
– B Port
– 8-kV Human-Body Model (A114-B)
– 250-V Machine Model (A115-A)
– 1500-V Charged-Device Model (C101)
This two-bit noninverting translator uses two separate configurable power-supply rails. The A port is designed to
track V
CCA
. V
CCA
accepts any supply voltage from 1.65 V to 3.6 V. The B port is designed to track V
CCB
. V
CCA
must be less than or equal to V
CCB
. V
CCB
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.
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.
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.
2 NanoFree is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2007 – 2009, 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.