FXLA108_12 Datasheet, PDF (1/17 Pages) Fairchild Semiconductor – Low-Voltage Dual-Supply 8-Bit Voltage Translator with Configurable Voltage Supplies and Signal Levels, 3-State Outputs, and Auto Direction Sensing

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
signal to the other port.
Applications
 Laptops, Notebooks,
 Routers, Switches
Ordering Information
Part Number
FXLA108BQX
Operating
Temperature Range
Package
-40 to 85°C
20-Terminal DQFN 2.5mm x 4.5mm Package
Packing Method
3K Units Tape and Reel
© 2009 Fairchild Semiconductor Corporation
FXLA108 • Rev. 1.0.5
www.fairchildsemi.com