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Pericom Semiconductor

PI4MSD5V9547 Datasheet Preview

PI4MSD5V9547 Datasheet

8 Channel I2C bus multiplexer

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PI4MSD5V9547
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8 Channel I2C bus multiplexer with Reset
Features
1-of-8 bidirectional translating multiplexer
I2C-bus interface logic
Operating power supply voltage from 1.65V to
5.5V
Allows voltage level translation between 1.2V,
1.8V,2.5 V, 3.3 V and 5 V buses
Low standby current
Low Ron switches
Active LOW reset input
Channel selection via I2C bus
Power-up with one channel on
Capacitance isolation when channel disabled
No glitch on power-up
Supports hot insertion
5 V tolerant inputs
0 Hz to 400 kHz clock frequency
ESD protection exceeds 8000 V HBM per JESD22-
A114, and 1000 V CDM per JESD22-C101
Latch-up testing is done to JEDEC Standard
JESD78 which exceeds 100 mA
Packages offered: TSSOP-24L,TQFN-24ZD
Description
The PI4MSD5V9547 is an octal bidirectional
translating multiplexer controlled by the I2C-bus. The
SCL/SDA upstream pair fans out to eight downstream
pairs, or channels.
Only one SCx/SDx channel can be selected at a time,
determined by the contents of the programmable control
register. The device powers up with Channel 0
connected, allowing immediate communication between
the master and downstream devices on that channel.
An active LOW reset input allows the
PI4MSD5V9547 to recover from a situation where one
of the downstream I2C-buses is stuck in a LOW state.
Pulling the RESET pin LOW resets the I2C-bus state
machine and causes all the channels to be deselected as
does the internal Power-On Reset (POR) function.
The pass gates of the switches are constructed such
that the VCC pin can be used to limit the maximum high
voltage which is passed by the PI4MSD5V9547. This
allows the use of different bus voltages on each pair, so
that1.2V, 1.8 V or 2.5 V or 3.3 V parts can communicate
with 5 V parts without any additional protection.
External pull-up resistors pull the bus up to the desired
voltage level for each channel. All I/O pins are 5 V
tolerant.
Pin Configuration
TSSOP
TQFN
2015-07-0040
PT0544-2
8/18/15
1




Pericom Semiconductor

PI4MSD5V9547 Datasheet Preview

PI4MSD5V9547 Datasheet

8 Channel I2C bus multiplexer

No Preview Available !

PI4MSD5V9547
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
8 Channel I2C bus multiplexer with Reset
Pin Description
Pin No.
(TSSOP,
SOIC)
Pin No.
(TQFN)
1 22
2 23
3 24
41
52
63
74
85
96
10 7
11 8
12 9
13 10
14 11
15 12
16 13
17 14
18 15
19 16
20 17
21 18
22 19
23 20
24 21
Pin Name
A0
A1
RESET
SD0
T SC0
SD1
SC1
SD2
SC2
SD3
SC3
GND
SD4
SC4
SD5
SC5
SD6
SC6
SD7
SC7
A2
SCL
SDA
VCC
Type
I
I
I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Ground
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
I/O
I/O
Power
Description
address input 0
address input 1
active LOW reset input
serial data 0
serial clock 0
serial data 1
serial clock 1
serial data 2
serial clock 2
serial data 3
serial clock 3
supply ground
serial data 4
serial clock 4
serial data 5
serial clock 5
serial data 6
serial clock 6
serial data 7
serial clock 7
address input 2
serial clock line
serial data line
supply voltage
2015-07-0040
PT0544-2
8/18/15
2


Part Number PI4MSD5V9547
Description 8 Channel I2C bus multiplexer
Maker Pericom Semiconductor
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PI4MSD5V9547 Datasheet PDF






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