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FXLA108 — Low-Voltage Dual-Supply 8-Bit Voltage Translator
March 2012
FXLA108
Low-Voltage Dual-Supply 8-Bit Voltage Translator with
Configurable Voltage Supplies and Signal Levels,
3-State Outputs, and Auto Direction Sensing
Features
Bi-Directional Interface between Two Levels:
from 1.1V to 3.6V
Fully Configurable: Inputs and Outputs Track V
CC
Non-Preferential Power-Up; Either V
CC
May Be
Powered Up First
Outputs Switch to 3-State if Either V
CC
is at GND
Power-Off Protection
Bus-Hold on Data Inputs Eliminates the Need for
Pull-Up Resistors; Do Not Use Pull-Up Resistors on
A or B Ports
Control Input (/OE) Referenced to V
CCA
Voltage
Packaged in 20-Terminal DQFN (2.5mm x 4.5mm)
Direction Control Not Necessary
100Mbps Throughput when Translating Between
1.8V and 2.5V
ESD Protection Exceeds:
- 8kV HBM
(per JESD22-A114 &Mil Std 883e 3015.7)
- 2kV CDM (per ESD STM 5.3)
Description
The FXLA108 is a configurable dual-voltage supply
translator for both uni-directional and bi-directional
voltage translation between two logic levels. The device
allows translation between voltages as high as 3.6V to
as low as 1.1V. The A port tracks the V
CCA
level and the
B port tracks the V
CCB
level. This allows for bi-directional
voltage translation over a variety of voltage levels: 1.2V,
1.5V, 1.8V, 2.5V, and 3.3V.
The device remains in three-state as long as either
V
CC
=0V, allowing either V
CC
to be powered up first.
Internal power-down control circuits place the device in
3-state if either V
CC
is removed.
The /OE input, when HIGH, disables both the A and B
ports by placing them in a 3-state condition. The /OE
input is supplied by V
CCA
.
The FXLA108 supports bi-directional translation without
the need for a direction control pin. The two ports of the
device have auto-direction sense capability. Either port
may sense an input signal and transfer it as an output
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