19-0644; Rev 2; 2/09
2
4-Channel I C Switches/Multiplexer
8/MAX7369
General Description
Features
o Four-Channel, Bidirectional Bus Expansion
o Voltage-Level Translation
The MAX7367/MAX7368/MAX7369 bidirectional, four-
2
2
channel I C switches/multiplexer expand the main I C
bus up to four extended buses. The MAX7369 1:4
o Low 6µA (typ) Supply Current, 0.1µA (typ)
2
multiplexer connects the main I C bus to one channel
Standby Current
at a time. The MAX7367/MAX7368 four-channel
o Low 16Ω (typ) On-Resistance
2
switches connect the main I C bus to one or more
2
o Channel Selection Through I C
channels at a time.
2
o I C-Compatible Normal or Fast Mode
2
These devices isolate bus loading by extending the I C
o Device Address Selection
bus onto different channels. The MAX7367/MAX7368/
MAX7369 allow more devices to be interconnected to a
master controller and multiple devices with the same
Up to Four Addresses (MAX7367)
Up to Eight Addresses (MAX7368/MAX7369)
o Bus-Loading Isolation
2
I C address to communicate to a master. The channels
2
are selected through the main I C bus by writing to the
o Support Clock Stretch, Synchronization, and
Arbitration
internal control register of the device.
o Hot Insertion
2
Any device connected to an I C 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-
o 2.3V to 5.5V Supply Voltage Range
o 5V-Tolerant Inputs
o Interrupt from Extended Buses
2
patible with the I C protocol of clock stretch,
(MAX7367/MAX7369)
synchronization, and arbitration in case multiple mas-
ters address the bus at the same time.
o Hardware Reset (MAX7367/MAX7368)
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.
Ordering Information
PIN-
PACKAGE
PART
TEMP RANGE
MAX7367EUP+
MAX7368EUE+
MAX7369EUP+
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
20 TSSOP
16 TSSOP
20 TSSOP
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.
+Denotes a lead(Pb)-free/RoHS-compliant package.
Pin Configurations
TOP VIEW
Applications
+
A0
A1
1
2
3
4
5
6
7
8
9
20 V
DD
Servers
19 SDA
18 SCL
17 INT
RAID
RESET
INT0
SD0
Cellular Phones
Base Stations
PCs
Multimedia Electronics
SAN/NAS
MAX7367
16 SC3
15 SD3
14 INT3
13 SC2
12 SD2
11 INT2
SC0
INT1
SD1
SC1
GND 10
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.