MAX7367 Datasheet, PDF (1/19 Pages) Maxim Integrated Products – 4-Channel I2C Switches/Multiplexer

19-0644; Rev 2; 2/09
4-Channel I²C Switches/Multiplexer
General Description
The MAX7367/MAX7368/MAX7369 bidirectional, four-
channel I²C switches/multiplexer expand the main I²C
bus up to four extended buses. The MAX7369 1:4
multiplexer connects the main I²C bus to one channel
at a time. The MAX7367/MAX7368 four-channel
switches connect the main I²C bus to one or more
channels at a time.
These devices isolate bus loading by extending the I²C
bus onto different channels. The MAX7367/MAX7368/
MAX7369 allow more devices to be interconnected to a
master controller and multiple devices with the same
I²C address to communicate to a master. The channels
are selected through the main I²C bus by writing to the
internal control register of the device.
Any device connected to an I²C bus can transmit and
receive signals. The MAX7367/MAX7368/MAX7369 are
transparent to signals sent and received at each chan-
nel, allowing multiple masters. These devices are com-
patible with the I²C protocol of clock stretch,
synchronization, and arbitration in case multiple mas-
ters address the bus at the same time.
All devices are set to the default state during initial
power-up. The MAX7367/MAX7368 have a RESET input
allowing external circuitry to set the MAX7367/MAX7368
to its default state anytime after the device has pow-
ered up. The MAX7367/MAX7369 have interrupt inputs,
allowing devices on the extended bus to send an inter-
rupt signal to the master on the main bus.
The MAX7367/MAX7369 are available in 20-pin TSSOP
packages, and the MAX7368 is available in a 16-pin
TSSOP package. All devices operate over the -40°C to
+85°C extended temperature range.
Servers
RAID
Cellular Phones
Base Stations
PCs
Multimedia Electronics
SAN/NAS
Applications
Features
o Four-Channel, Bidirectional Bus Expansion
o Voltage-Level Translation
o Low 6µA (typ) Supply Current, 0.1µA (typ)
Standby Current
o Low 16Ω (typ) On-Resistance
o Channel Selection Through I²C
o I²C-Compatible Normal or Fast Mode
o Device Address Selection
Up to Four Addresses (MAX7367)
Up to Eight Addresses (MAX7368/MAX7369)
o Bus-Loading Isolation
o Support Clock Stretch, Synchronization, and
Arbitration
o Hot Insertion
o 2.3V to 5.5V Supply Voltage Range
o 5V-Tolerant Inputs
o Interrupt from Extended Buses
(MAX7367/MAX7369)
o Hardware Reset (MAX7367/MAX7368)
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
MAX7367EUP+
-40°C to +85°C
20 TSSOP
MAX7368EUE+
-40°C to +85°C
16 TSSOP
MAX7369EUP+
-40°C to +85°C
20 TSSOP
+Denotes a lead(Pb)-free/RoHS-compliant package.
Pin Configurations
TOP VIEW
+
A0 1
A1 2
RESET 3
INT0 4 MAX7367
SD0 5
SC0 6
INT1 7
SD1 8
SC1 9
GND 10
20 V_DD
19 SDA
18 SCL
17 INT
16 SC3
15 SD3
14 INT3
13 SC2
12 SD2
11 INT2
TSSOP
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.