MAX7368 MAXIM [Maxim Integrated Products], MAX7368 Datasheet

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MAX7368

Manufacturer Part Number
MAX7368
Description
4-Channel I2C Switches/Multiplexer
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet

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

Related parts for MAX7368

MAX7368 Summary of contents

Page 1

... 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 ...

Page 2

I C Switches/Multiplexer ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................-0.3V to +6.0V DD All Other Pins to GND............................................-0.3V to +6.0V Input Currents V ...............................................................................100mA DD GND ..............................................................................100mA All Input Pins.................................................................±20mA Output Current ....................................................................25mA Stresses beyond those listed under ...

Page 3

I ELECRTICAL CHARACTERISTICS (3.3V SUPPLY) (continued 2.3V to 3.6V -40°C to +85°C, unless otherwise noted. Typical values are PARAMETER SYMBOL PASS GATE Switch On-Resistance R ON Switch Output Voltage V PASS ...

Page 4

I C Switches/Multiplexer ELECRTICAL CHARACTERISTICS (5V SUPPLY) (continued 4.5V to 5.5V -40°C to +85°C, unless otherwise noted. Typical values are PARAMETER SYMBOL Input Leakage Current I L Input Capacitance C ...

Page 5

I TIMING CHARACTERISTICS (Figure 1) (continued 2.3V to 5.5V -40°C to +85°C, unless otherwise noted.) (Note PARAMETER SYMBOL Fall Time of Both SDA and SCL Signals Capacitive Load for Each Bus Line ...

Page 6

I C Switches/Multiplexer INT_ INT Figure 2. INT Timing Diagram SCL SDA RESET Figure 3. RESET Timing Diagram 6 _______________________________________________________________________________________ 50 W(REJ)L W(REJ)H 50% t REC;STA 50 50% t RST t WL(RST) ...

Page 7

+5V +25°C, unless otherwise noted PROPAGATION DELAY vs. SUPPLY VOLTAGE 400kHz IN 6 FALLING EDGE RISING EDGE 1 0 2.3 2.7 3.1 3.5 3.9 4.3 ...

Page 8

... I C Switches/Multiplexer PIN MAX7367 MAX7368 MAX7369 — 4 — — — — — — _______________________________________________________________________________________ ...

Page 9

I SC0 SC1 SC2 SC3 SD0 SD1 SD2 SD3 RESET POWER-ON RESET V DD SCL GLITCH FILTER SDA INT[0–3] _______________________________________________________________________________________ _______________________________________________________________________________________ 2 C Switches/Multiplexer MAX7367 Functional Diagram SWITCH CONTROL LOGIC MAX7367 BUS CONTROL INTERRUPT LOGIC A0 ...

Page 10

... I C Switches/Multiplexer SC0 SC1 SC2 SC3 SD0 SD1 SD2 SD3 RESET POWER-ON RESET V DD SCL GLITCH FILTER SDA 10 ______________________________________________________________________________________ MAX7368 Functional Diagram SWITCH CONTROL LOGIC MAX7368 BUS CONTROL GND ...

Page 11

I SC0 SC1 SC2 SC3 SD0 SD1 SD2 SD3 POWER- RESET SCL GLITCH FILTER SDA INT[0–3] ______________________________________________________________________________________ 2 C Switches/Multiplexer MAX7369 Functional Diagram SWITCH CONTROL LOGIC MAX7369 BUS CONTROL INTERRUPT LOGIC ...

Page 12

... The MAX7367 slave address consists of 5 fixed bits (A6–A2, set to 11100), followed by 2 pin-programmable bits (A1 and A0), as shown in Figure 4. The MAX7368/ MAX7369 slave address consists of 4 fixed bits (A6–A3, set to 1110), followed by 3 pin-programmable bits (A2, A1 and A0), as shown in Figure 5. The most significant address bit (A6) is transmitted first, followed by the remaining bits ...

Page 13

... Select a channel by writing a control byte after a success- ful acknowledge of the slave address. The last 4 bits of the control byte determine which channel(s) is selected for the MAX7367/MAX7368 as shown in Table 1. The last 3 bits of the control byte determine which channel is selected for the MAX7369 as shown in Table 2. The selected channels are activated after the stop condition ...

Page 14

... The output voltage ( limited by the supply volt- PASS ) (see the Typical Operation Characteristics ). age (V DD For the MAX7367/MAX7368/MAX7369 to be used as a voltage translator, the V voltage should be lower PASS than or equal to the lowest bus voltage. The MAX7367/MAX7368/MAX7369 feature an I patible, 2-wire serial interface consisting of a bidirec- tional serial-data line (SDA) and a serial-clock line (SCL) ...

Page 15

... MAX7367/MAX7368/MAX7369 are ready to accept or send data. The least significant bit (LSB) of the address byte (R/W) determines whether the master is writing to or reading from the MAX7367/MAX7368/ MAX7369 (R selects a write command, R selects a read command as shown in Figures 12 and 13). After receiving the proper address, the MAX7367/MAX7368/MAX7369 (slave) issue an ACK by pulling SDA low for one clock cycle ...

Page 16

... In order to meet the rise time requirement, choose the pullup resistors such that the rise time (t 0.85R less than 300ns. For a bus PULLUP BUS TOP VIEW + RESET 3 MAX7368 SD0 4 SC0 5 SD1 6 SC1 7 GND 8 TSSOP 16 ______________________________________________________________________________________ capacitance of 400pF, choose a pullup resistor less than 880Ω ...

Page 17

... SDA SCL MASTER * FOR MAX7367/MAX7368. ** FOR MAX7368/MAX7369. () FOR MAX7367/MAX7369. ______________________________________________________________________________________ 2 C Switches/Multiplexer Typical Operating Circuit SDA SD0 SCL SC0 (INT0) (INT) V RESET * MAX7367 SD1 MAX7368 MAX7369 SC1 (INT1) V SD2 SC2 (INT2 SD3 SC3 A2** (INT3) GND DD DD ...

Page 18

I C Switches/Multiplexer For the latest package outline information and land patterns www.maxim-ic.com/packages. PACKAGE TYPE 20 TSSOP 16 TSSOP 18 ______________________________________________________________________________________ Package Information PACKAGE CODE U20-3 U16-1 DOCUMENT NO. 21-0066 21-0066 ...

Page 19

... Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 19 © 2009 Maxim Integrated Products 2 C Switches/Multiplexer DESCRIPTION Initial release of the MAX7369 Initial release of the MAX7367/MAX7368 Changed the minimum V spec IL Maxim is a registered trademark of Maxim Integrated Products, Inc. Revision History PAGES CHANGED — ...

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