TXS0102_09 Datasheet, PDF (1/18 Pages) Texas Instruments – 2-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS

TXS0102
www.ti.com .............................................................................................................................................. SCES640B – JANUARY 2007 – REVISED JANUARY 2009
2-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS
FEATURES
1
•2 No Direction-Control Signal Needed
• Max Data Rates
– 24 Mbps (Push Pull)
– 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)
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
YZP PACKAGE
(BOTTOM VIEW)
A2
V_CCA
GND
D1 4 5 D2
C1 3 6 C2
B1 2 7 B2
B2 A1 1 8 A2
A1
OE
V_CCB
B1
DESCRIPTION/ORDERING INFORMATION
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.
NanoFree 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 © 2007–2009, Texas Instruments Incorporated