June 2008
FXL2SD106
Low Voltage Dual Supply 6-Bit SD Interface Voltage
Translator with Configurable Voltage Supplies and Signal
Levels, 3-State Outputs, and Auto Direction Sensing
Features
General Description
■ Bi-directional interface between two levels from 1.1V
The FXL2SD106 is a configurable dual-voltage-supply
translator designed for both uni-directional and bi-
directional voltage translation between two logic levels.
The device allows translation between voltages as high
to 3.6V
■ Fully configurable: Inputs and outputs track V level
CC
■ Non-preferential power-up; either VCC may be
as 3.6V to as low as 1.1V. The A port tracks the V
CCA
powered-up first
level, and the B port tracks the V
level. This allows
CCB
■ Outputs remain in 3-state until active V level is
CC
for bi-directional voltage translation over a variety of volt-
age levels: 1.2V, 1.5V, 1.8V, 2.5V and 3.3V.
reached
■ Outputs switch to 3-state if either V is at GND.
CC
The FXL2SD106 is specifically designed as a translator
to interface with the SDIO standard. I/O capacitance is
managed to meet the SD maximum capacitance specifi-
cation. The B side ESD performance allows interface as
an external card and the part can handle 80 Mbps
throughput when translating between 1.8V and 2.5V.
■ Power off protection
■ Bushold on data inputs eliminates the need for SDIO
pull-up resistors
■ Control input (OE and CLK IN) are referenced to V
CCA
voltage
■ Packaged in 16-terminal DQFN (2.5mm x 3.5mm)
■ Direction control not needed
The device remains in 3-state until both V s reach
CC
active levels allowing either V
to be powered-up first.
CC
■ 80 Mbps throughput when translating between 1.8V
Internal power down control circuits place the device in
3-state if either VCC is removed.
and 2.5V
■ ESD protection exceeds:
The OE input, when low, disables both the A and B ports
by placing them in a 3-state condition. The FXL2SD106
is designed so that both control pins (OE and CLK IN)
– 12kV HBM (B port I/O to GND)
(per JESD22-A114 & Mil Std 883e 3015.7)
– 8kV HBM (A port I/O to GND)
are supplied by V
.
CCA
(per JESD22-A114 & Mil Std 883e 3015.7)
The device senses an input signal on A or B port
automatically. The input signal is transferred to the other
port.
– 1kV CDM (per ESD STM 5.3)
Ordering Information
Order Number
Package Number
Package Description
FXL2SD106BQX
MLP16E
16-Terminal Depopulated Quad Very-Thin Flat Pack,
No Leads (DQFN), JEDEC MO-241, 2.5mm x 3.5mm
All packages are lead free per JEDEC: J-STD-020B standard.
©2008 Fairchild Semiconductor Corporation
FXL2SD106 Rev. 1.8.0
www.fairchildsemi.com