TXS0102_11 Datasheet, PDF (1/23 Pages) Texas Instruments – 2-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS

TXS0102
www.ti.com
SCES640D – JANUARY 2007 – REVISED MARCH 2011
2-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS
Check for Samples: TXS0102
FEATURES
1
•2 No Direction-Control Signal Needed
• Max Data Rates
– 24 Mbps (Push Pull)
– 2 Mbps (Open Drain)
• Available in the Texas Instruments NanoStar™
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)
TYPICAL LEVEL-SHIFTER
APPLICATIONS
• I²C/SMBus
• UART
• GPIO
DCT OR DCU PACKAGE
(TOP VIEW)
B2 1
GND 2
V_CCA
3
A2 4
8 B1
7
V_CCB
6 OE
5 A1
DQE OR DQM PACKAGE
(TOP VIEW)
V_CCA 1
A1 2
A2 3
GND 4
V 8
CCB
7 B1
6 B2
5 OE
YZP PACKAGE
(BOTTOM VIEW)
A2 D1 4 5 D2
V_CCA
GND
C1 3 6 C2
B1 2 7 B2
B2 A1 1 8 A2
A1
OE
V_CCB
B1
DESCRIPTION/ORDERING INFORMATION
This two-bit non-inverting translator is a bidirectional voltage-level translator and can be used to establish digital
switching compatibility between mixed-voltage systems. It uses two separate configurable power-supply rails,
with the A ports supporting operating voltages from 1.65 V to 3.6 V while it tracks the V_CCA supply, and the B
ports supporting operating voltages from 2.3 V to 5.5 V while it tracks the V_CCB supply. This allows the support of
both lower and higher logic signal levels while providing bidirectional translation capabilities 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 I/Os are placed in the high-impedance state, which significantly
reduces the power-supply quiescent current consumption.
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.
NanoStar is a trademark of Texas Instruments.
2
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 © 2007–2011, Texas Instruments Incorporated