Datasheet Analog Devices LTC4302 — Ficha de datos

LTC4302-1/LTC4302-2
Addressable
2-Wire Bus Buffers
DESCRIPTIO
U FEATURES
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■ ■ The LTC®4302-1/LTC4302-2 addressable I2C bus and
SMBus compatible bus buffers allow a peripheral board
to be inserted and removed from a live backplane without
corruption of the bus. The LTC4302-1/LTC4302-2 maintain electrical isolation between the backplane and peripheral board until their VCC supply is valid and a master
device on the backplane side addresses the LTC4302-1/
LTC4302-2 and commands them to connect. The
LTC4302-1/LTC4302-2’s ADDRESS pin provides 32 possible addresses set by an external resistive divider between VCC and GND. The LTC4302-1/LTC4302-2 work
with supply voltages ranging from 2.7V to 5.5V. The SDA
and SCL inputs and outputs do not load the bus lines when
VCC is low. Bidirectional Buffer for SDA and SCL Lines
Increases Fanout
Connect SDA and SCL Lines with 2-Wire Bus
Commands
Prevents SDA and SCL Corruption During Live Board …