LTC4300A-3CDD Linear Technology, LTC4300A-3CDD Datasheet - Page 10

• Manufacturer Part Number: LTC4300A-3CDD
• Description: IC BUFFER BUS HOTSWAP 2WR 8DFN
• Manufacturer: Linear Technology
• Type: Hot-Swap Switchr

Specifications of LTC4300A-3CDD

• Applications: General Purpose, Buffer/Bus Extender
• Internal Switch(s): Yes
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-WFDFN Exposed Pad
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

APPLICATIO S I FOR ATIO
LTC4300A-3
5V to 3.3V Level Translator and Power Supply
Redundancy
Systems requiring different supply voltages for the
backplane side and the card side can use the LTC4300A-3,
as shown in Figure 5. The pull-up resistors on the card side
connect from SDAOUT to SCLOUT to V
the backplane side connect from SDAIN and SCLIN to V
The LTC4300A-3 functions for voltages ranging from 2.7V
to 5.5V on both V
10
ENA1
ENA2
V
SDA
SCL
V
CC2
CC
10k
R7
BACKPLANE
10k
R8
Figure 4. The LTC4300A-3 in a Custom Application. Making ENABLE the Shortest Pin Ensures that
V
CC
CC
and V
U
and V
CONNECTOR
BACKPLANE
CC2
CC2
U
Connect Before ENABLE is Allowed to Go High, Connecting the Card to the Backplane
. There is no constraint on the
W
CC2
, and those on
U
CC
.
C2 0.01µF
C4 0.01µF
voltage magnitudes of V
other.
This application also provides power supply redundancy.
If the V
LTC4300A-3 disconnects the backplane from the card, so
that the backplane can continue to function. If the V
voltage falls below its UVLO threshold and the V
voltage remains active, hold ENABLE at ground to ensure
proper operation.
V
SDAIN
SCLIN
V
SDAIN
SCLIN
CC2
CC
CC
I/O PERIPHERAL CARD 1
I/O PERIPHERAL CARD 2
voltage falls below its UVLO threshold, the
LTC4300A-3
LTC4300A-3
V
V
GND
GND
CC2
CC2
CC
C1
0.01µF
C3
0.01µF
SDAOUT
SDAOUT
SCLOUT
SCLOUT
ENABLE
ENABLE
and V
CC2
R4
10k
R1
10k
with respect to each
R2
10k
R3
10k
R5
10k
R6
10k
sn4300a3 4300a3fs
CARD_SDA
CARD_SCL
CARD2_SDA
CARD2_SCL
4300A-3 F04
CC2
CC