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MAX7357EUG+

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P22
General Description
The MAX7356/MAX7357/MAX7358 8-channel I
2
C
switches/multiplexers expand the main I
2
C bus to any
combination of 8 extended I
2
C buses. They enable a
master on the main bus to isolate and communicate
with devices or groups of devices that may otherwise
have slave address conflicts. Any extended bus can be
connected or disconnected by control packets from the
main I
2
C bus writing to the main control register of
these I
2
C switches.
The MAX7357 and MAX7358 feature an enhanced
mode that includes a built-in timer used to monitor all
extended buses for lock-up conditions. If the clock or
data line of any of these buses is low for more than
25ms (typ), a lock condition is detected. An optional
interrupt can be generated through the bidirectional
RST/INT. The master can read the bus lock-up register
to find out which extended bus is locked up. The mas-
ter can also enable the MAX7357 or the MAX7358 to
send a “flush-out” sequence on the faulty channel.
There is an optional preconnection check that
can be enabled to toggle the extended bus clock and
data line low then high to ensure the downstream bus is
not locked high prior to connecting it to the host bus.
The MAX7356/MAX7357/MAX7358 are transparent
to signals sent and received at each channel, allowing
multiple masters. Any device connected to an I
2
C
bus can transmit and receive signals; however, only the
master connected to the host side of the MAX7356/
MAX7357/MAX7358 should address the device.
The MAX7356/MAX7357/MAX7358 are available in 24-pin
TSSOP and TQFN packages and are specified over the
extended -40°C to +85°C temperature range.
Applications
Features
o Bus Lock-Up Detection and Isolation (MAX7357,
MAX7358)
o Host Notification on Detection of Lock-Up
(MAX7357, MAX7358)
o Maintain Fault Diagnostic Information (MAX7357,
MAX7358)
o Dual-Function RST/INT Provides Lock-Up
Notification and Hardware Reset (MAX7357,
MAX7358)
o RST Input Resets I
2
C Interface (MAX7358)
o 3 Address Control Inputs
o Low R
ON
Switches
o Logic-Level Translation
o Low 0.1µA (typ) Standby Current
o Support Hot Insertion
o 100kbps Standard-Mode or 400kbps Fast-Mode
I
2
C Interface
o Address Translation Allows Multiple Device with
Same ID
o 5.5V-Tolerant Inputs
o 2.3V to 5.5V Supply
MAX7356/MAX7357/MAX7358
1-to-8 I
2
C Bus Switches/Multiplexers with Bus
Lock-Up Detection, Isolation, and Notification
________________________________________________________________
Maxim Integrated Products
1
19-4207; Rev 0; 9/08
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.
EVALUATION KIT AVAILABLE
Ordering Information
PART TEMP RANGE PIN-PACKAGE
MAX7356ETG+ -40°C to +85°C 24 TQFN-EP*
MAX7356EUG+** -40°C to +85°C 24 TSSOP
MAX7357ETG+ -40°C to +85°C 24 TQFN-EP*
MAX7357EUG+** -40°C to +85°C 24 TSSOP
MAX7358ETG+ -40°C to +85°C 24 TQFN-EP*
MAX7358EUG+** -40°C to +85°C 24 TSSOP
+
Denotes a lead-free/RoHS-compliant package.
*
EP = Exposed pad.
**
Future product—contact factory for availability.
Typical Operating Circuit and Pin Configurations appear at end of data sheet.
PART
ENHANCED
MODE
PRECONNECTION
WIGGLE TEST
POWER-UP
STATE
RST/INT
BIDIRECTIONAL
MAX7356 No No Basic mode RST only
MAX7357 Yes Yes, enhanced mode only Enhanced mode Yes
MAX7358 Yes Yes, enhanced mode only Basic mode Yes
Selector Guide
Servers
RAID
Base Stations
Control and Automation Devices
SFP Control Interface
Networking Equipment
MAX7356/MAX7357/MAX7358
1-to-8 I
2
C Bus Switches/Multiplexers with Bus
Lock-Up Detection, Isolation, and Notification
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS (3.3V SUPPLY)
(V
DD
= +2.3V to +3.6V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
DD
= +3.3V, T
A
= +25°C.) (Notes 2–5)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a 4-layer
board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial
.
(Voltages referenced to GND.)
V
DD
.................................................................. -0.3V to +6.0V
All Other Pins.....................................................-0.3V to +6.0V
Input Currents
V
DD
...............................................................................100mA
GND ..............................................................................100mA
All Input Pins.....................................................................±20mA
Output Current ....................................................................25mA
Continuous Power Dissipation (T
A
= +70°C)
24-Pin TSSOP (derate 13.9mW/°C above +70°C) .....1111mW
24-Pin TQFN (derate 27.8mW/°C above +70°C) .......2222mW
Junction-to-Case Thermal Resistance (
θ
JC
) (Note 1)
24-Pin TSSOP...............................................................13°C/W
24-Pin TQFN................................................................3.0°C/W
Junction-to-Ambient Thermal Resistance (
θ
JA
) (Note 1)
24-Pin TSSOP............................................................72.0°C/W
24-Pin TQFN..............................................................36.0°C/W
Operating Temperature Range ......................... -40°C to +85°C
Junction Temperature .................................................... +150°C
Storage Temperature Range ........................... -65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
POWER SUPPLY
Supply Voltage V
DD
2.3 3.6 V
Basic mode 30 50
Supply Current I
DD
V
DD
= 3.6V;
no load, f
SCL
=
400kHz
Enhanced mode
(MAX7357/MAX7358 only)
45 70
µA
Standby Current I
STB
No load, V
I
= V
DD
or GND, V
DD
= 3.6V 0.1 1 µA
Power-On Reset Voltage V
POR
V
DD
rising 0.9 1.4 2.1 V
Power-On Reset Hysteresis V
HYST
0.4 V
INPUT SCL, INPUT/OUTPUT SDA
Low-Level Input Voltage V
IL
0.3 x
V
DD
V
High-Level Input Voltage V
IH
0.7 x
V
DD
V
V
OL
= 0.4V 3
Low-Level Output Current I
OL
V
OL
= 0.6V 6
mA
Input Leakage Current I
LH
, I
LI
V
SCL
and V
SDA
= V
DD
or GND -1 +1 µA
Input Capacitance C
I
V
I
= GND 15 pF
SELECT INPUTS A0 to A2, RST
Low-Level Input Voltage V
IL
0.3 x
V
DD
V
High-Level Input Voltage V
IH
0.7 x
V
DD
V
Input Leakage Current I
LI
A0 to A2, and RST at V
DD
or GND -1 +1 µA
Input Capacitance C
I
V
I
= GND 2 pF
MAX7356/MAX7357/MAX7358
1-to-8 I
2
C Bus Switches/Multiplexers with Bus
Lock-Up Detection, Isolation, and Notification
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (3.3V SUPPLY) (continued)
(V
DD
= +2.3V to +3.6V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
DD
= +3.3V, T
A
= +25°C.) (Notes 2–5)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
PASS GATE
V
DD
= 3.0V to 3.6V, V
O
= 0.4V, I
O
= 15mA 5 11 30
Switch Resistance R
ON
V
DD
= 2.3V to 2.7V, V
O
= 0.4V, I
O
= 10mA 7 16 55
Ω
V
SWin
= V
DD
= 3.3V, I
SWout
= -100µA 1.9
V
S Wi n
= V
D D
= 3.0V to 3.6V , I
S Wo ut
= - 100µA 1.6 2.8
V
SWin
= V
DD
= 2.5V, I
SWout
= -100µA 1.5
Switch Output Voltage V
SW
V
S Wi n
= V
D D
= 2.3V to 2.7V , I
S Wo ut
= - 100µA 1.1 2.0
V
Basic mode -1 +1
Leakage Current I
L
V
I
= V
DD
or GND
Enhanced mode
(MAX7357/MAX7358)
-2 +2
µA
Input/Output Capacitance C
IO
V
I
= GND 3 pF
OUTPUT RST/INT
Low-Level Output Current I
OL
V
OL
= 0.4V (MAX7357/MAX7358) 3 mA
Leakage Current I
LH
, I
LI
V
RST/INT
= V
DD
or GND -1 +1 µA
ELECTRICAL CHARACTERISTICS (5V SUPPLY)
(V
DD
= +4.5V to +5.5V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
DD
= +5V, T
A
= +25°C.) (Notes 2–5)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
POWER SUPPLY
Supply Voltage V
DD
4.5 5.5 V
Basic mode 65 100
Supply Current I
DD
V
DD
= 5V;
no load, f
SCL
=
400kHz
Enhanced mode
(MAX7357/MAX7358 only)
90 130
µA
Standby Current I
STB
No load, V
I
= V
DD
or GND, V
DD
= 5.5V 0.2 1 µA
Power-On Reset Voltage V
POR
V
DD
rising 0.9 1.4 2.1 V
Power-On Reset Hysteresis V
HYST
0.4 V
INPUT SCL, INPUT/OUTPUT SDA
Low-Level Input Voltage V
IL
0.3 x
V
DD
V
High-Level Input Voltage V
IH
0.7 x
V
DD
V
V
OL
= 0.4V 3
Low-Level Output Current I
OL
V
OL
= 0.6V 6
mA
Input Leakage Current I
LH
, I
LI
V
SCL
= V
SDA
= V
DD
or GND -1 +1 µA
Input Capacitance C
I
V
I
= GND 15 pF
SELECT INPUTS A0 TO A2, RST
Low-Level Input Voltage V
IL
0.3 x
V
DD
V
High-Level Input Voltage V
IH
0.7 x
V
DD
V
Input Leakage Current I
LI
A0 to A2, and RST pins at V
DD
or GND -1 +1 µA
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P22

MAX7357EUG+

Mfr. #:
Buy MAX7357EUG+
Manufacturer:
Maxim Integrated
Description:
Multiplexer Switch ICs 1-to-8 I2C Bus Switch/MUX
Lifecycle:
New from this manufacturer.
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