TXS0102
www.ti.com .............................................................................................................................................. SCES640B–JANUARY 2007–REVISED JANUARY 2009
2-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS
1
FEATURES
TYPICAL LEVEL-SHIFTER
APPLICATIONS
2
•
No Direction-Control Signal Needed
•
•
•
I2C/SMBus
UART
•
Max Data Rates
–
–
24 Mbps (Push Pull)
2 Mbps (Open Drain)
GPIO
•
•
•
Available in the Texas Instruments NanoFree™
Package
DCT OR DCU PACKAGE
(TOP VIEW)
1.65 V to 3.6 V on A port and 2.3 V to 5.5 V on
B1
1
2
3
4
8
7
6
5
B2
B port (VCCA ≤ VCCB
)
GND
VCCA
A2
VCC Isolation Feature – If Either VCC Input Is at
GND, Both Ports Are in the High-Impedance
State
VCCB
OE
A1
•
•
•
•
No Power-Supply Sequencing Required –
Either VCCA or VCCB Can Be Ramped First
Ioff Supports Partial-Power-Down Mode
Operation
YZP PACKAGE
(BOTTOM VIEW)
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
D1
C1
B1
A1
D2
C2
B2
A2
4 5
3 6
2 7
1 8
A2
A1
VCCA
OE
ESD Protection Exceeds JESD 22
VCCB
GND
B2
–
A Port
B1
–
–
–
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)
DESCRIPTION/ORDERING INFORMATION
This two-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. The B port is designed to track VCCB. VCCA
must be less than or equal to 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.
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.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007–2009, Texas Instruments Incorporated