1FEATURES
• 6-to-12 Demultiplexer/Multiplexer Allows SDIO
Port Expansion
• Built-in Level Translator Eliminates Voltage
Mismatch Between Baseband and SD Card or
SDIO Peripheral
• VCCA, VCCB0, and VCCB1 Each Operate Over Full
1.1-V to 3.6-V Range
• Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
• ESD Performance A Port
– 2000-V Human-Body Model (A114-B)
– 100-V Machine Model (A115-A)
– 1500-V Charged-Device Model (C101)
• ±8-kV Contact Discharge IEC 61000-4-2 ESD
Performance (B Port)

DESCRIPTION/ORDERING INFORMATION
The TXS02612 is designed to interface the cell phone baseband with external SDIO peripherals. The device
includes a 6-channel SPDT switch with voltage-level translation capability. This allows a single SDIO port to be
interfaced with two SDIO peripherals. The TXS02612 has three separate supply rails that operate over the full
range of 1.1 V to 3.6 V. This allows the baseband and SDIO peripherals to operate at different supply voltages if
required.
The select (SEL) input is used to choose between the B0 port and B1 port. When SEL = Low, B0 port is
selected; when SEL = High, B1 port is selected. SEL is referenced to VCCA. For the unselected B port, the clock
output is held low, whereas the data and command I/Os are pulled high to their respective VCCB through a 70-kΩ
resistor (±30% tolerance).