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FXMA2102 — Dual-Supply, 2-Bit Voltage Translator / Buffer / Repeater / Isolator for I
2
C Applications
July 2014
FXMA2102
Dual Supply, 2-Bit Voltage Translator / Buffer /
Repeater / Isolator for I
2
C Applications
Features
Bi-Directional Interface between Any Two Levels:
1.65 V to 5.5 V
Direction Control not Needed
System GPIO Resources Not Required when OE
Tied to V
CCA
I
2
C 400 pF Buffer / Repeater
I C Bus Isolation
A/B Port V
OL
= 175 mV (Typical), V
IL
= 150 mV,
I
OL
= 6 mA
Open-Drain Inputs / Outputs
Accommodates Standard-Mode and Fast-Mode
I
2
C-Bus Devices
Supports I
2
C Clock Stretching & Multi-Master
Fully Configurable: Inputs and Outputs Track V
CC
Control Input (/OE) Referenced to V
CCA.
Non-Preferential Power-Up; Either V
CC
May Be
Powered-Up First
Outputs Switch to 3-State if Either V
CC
is at GND
Tolerant Output Enable: 5 V
Packaged in 8-Terminal Leadless MicroPak™
(1.6 mm x 1.6 mm) and Ultrathin MLP
(1.2 mm x 1.4 mm)
ESD Protection Exceeds:
- 8 kV HBM ESD (per JESD22-A114)
- 2 kV CDM (per JESD22-C101)
2
Description
The FXMA2102 is a high-performance configurable
dual-voltage-supply translator for bi-directional voltage
translation over a wide range of input and output
voltages levels.
Intended for use as a voltage translator between I
2
C-
Bus
®
complaint masters and slaves.
The device is designed so that the A port tracks the
V
CCA
level and the B port tracks the V
CCB
level. This
allows for bi-directional A/B port voltage translation
between any two levels from 1.65 V to 5.5 V. V
CCA
can
equal V
CCB
from 1.65V to 5.5V. The OE pin is
referenced to V
CCA.
Either V
CC
can be powered-up first. Internal power-down
control circuits place the device in 3-state if either V
CC
is
removed.
The two ports of the device have automatic direction
sense capability. Either port may sense an input signal
and transfer it as an output signal to the other port.
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