TXS02324 Datasheet, PDF (1/25 Pages) Texas Instruments – Dual-Supply 2:1 SIM Card Multiplexer/Translator With Slot Dedicated Dual LDO

TXS02324
www.ti.com
Dual-Supply 2:1 SIM Card Multiplexer/Translator
With Slot Dedicated Dual LDO
Check for Samples: TXS02324
SCES823 – FEBRUARY 2011
FEATURES
1
• Level Translator
– VDDIO Range of 1.7 V to 3.3 V
• Low-Dropout (LDO) Regulator
– 50-mA LDO Regulator With Enable
– 1.8-V or 2.95-V Selectable Output Voltage
– 2.3-V to 5.5-V Input Voltage Range
– Very Low Dropout: 100 mV (Max) at 50 mA
• Control and Communication Through I²C
Interface With Baseband Processor
• ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-B)
– 1000-V Charged-Device Model (C101)
• Package
– 20-Pin QFN (3 mm x 3 mm)
RUK PACKAGE
(TOP VIEW)
15 14 13 12 11
RSTX ¹⁶
DNU 17
GND ¹⁸
SIM2CLK ¹⁹
SIM2IO ²⁰
10 _SIMCLK
9 _SIMRST
8 _SIM1CLK
7 _SIM1IO
6 _SIM1RST
1 2 3 45
Note: The Exposed Thermal Pad must be
connect to Ground.
DESCRIPTION/ORDERING INFORMATION
The TXS02324 is a complete dual-supply standby Smart Identity Module (SIM) card solution for interfacing
wireless baseband processors with two individual SIM subscriber cards to store data for mobile handset
applications. It is a custom device which is used to extend a single SIM/UICC interface to be able to support two
SIMs/UICCs.
The device complies with ISO/IEC Smart-Card Interface requirements as well as GSM and 3G mobile standards.
It includes a high-speed level translator capable of supporting Class-B (2.95 V) and Class-C (1.8 V) interfaces,
two low-dropout (LDO) voltage regulators that have output voltages that are selectable between 2.95-V Class-B
and 1.8-V Class-C interfaces, an integrated "fast-mode" 400 kb/s "slave" I2C control register interface for
configuration purposes, a 32-kHz clock input for internal timing generation.
The voltage-level translator has two supply voltage pins. VDDIO sets the reference for the baseband interface
and can be operated from 1.7 V to 3.3 V. VSIM1 and VSIM2 are programmed to either 1.8 V or 2.95 V, each
supplied by an independent internal LDO regulator. The integrated LDO accepts input battery voltages from 2.3
V to 5.5 V and outputs up to 50 mA to the B-side circuitry and external Class-B or Class-C SIM card.
T_A
–40°C to 85°C
QFN – RUK
ORDERING INFORMATION⁽¹⁾
PACKAGE ⁽²⁾
ORDERABLE PART NUMBER
Tape and reel TXS02324RUKR
TOP-SIDE MARKING
ZUY
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
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.
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.
© 2011, Texas Instruments Incorporated